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How hypoxia-induced diabetes develops and is maintained in children born preterm. Front Endocrinol (Lausanne). 2025; 16:1720875. Pae EK, Harper RM. PMID: 41669242; PMCID: PMC12883372.
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Brain connectivity correlates of breathing and cardiac patterns in epilepsy: A study including SUDEP cases. Imaging Neurosci (Camb). 2025; 3. Kassinopoulos M, Rolandi N, Alphan L, Harper RM, Oliveira J, Scott C, Kozák LR, Guye M, Lemieux L, Diehl B. PMID: 41079767; PMCID: PMC12511790.
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Sleep EEG and respiratory biomarkers of sudden unexpected death in epilepsy (SUDEP): a case-control study. Lancet Neurol. 2025 Oct; 24(10):840-849. Magana-Tellez O, Maganti R, Hupp NJ, Luo X, Rani S, Hampson JP, Ochoa-Urrea M, Tallavajhula SS, Sainju RK, Friedman D, Nei M, Gehlbach BK, Schuele S, Harper RM, Diehl B, Bateman LM, Devinsky O, Richerson GB, Lhatoo SD, Lacuey N. PMID: 40975100; PMCID: PMC12707159.
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Risk markers for sudden unexpected death in epilepsy: an observational, prospective, multicentre cohort study. Lancet. 2025 Oct 04; 406(10511):1497-1507. Ochoa-Urrea M, Luo X, Vilella L, Lacuey N, Omidi SJ, Hupp NJ, Talavera B, Hampson JP, Rani MRS, Tao S, Li X, Miyake CY, Cui L, Hampson JS, Chaitanya G, Vakilna YS, Sainju RK, Friedman D, Nei M, Allen L, Scott CA, Oliveira J, Gehlbach B, Schuele SU, Ogren JA, Harper RM, Diehl B, Bateman LM, Richerson GB, Yamal JM, Zhang GQ, Devinsky O, Lhatoo SD. PMID: 40975113; PMCID: PMC12707170.
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Brain gray matter changes in children at risk for sudden unexpected death in epilepsy. Pediatr Res. 2024 Dec; 96(7):1732-1738. Roy B, Ogren JA, Allen LA, Diehl B, Sankar R, Lhatoo SD, Kumar R, Harper RM. PMID: 38992155; PMCID: PMC11772226.
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Incidence and Types of Cardiac Arrhythmias in the Peri-Ictal Period in Patients Having a Generalized Convulsive Seizure. Neurology. 2024 Jul 09; 103(1):e209501. Vilella L, Miyake CY, Chaitanya G, Hampson JP, Omidi SJ, Ochoa-Urrea M, Talavera B, Mancera O, Hupp NJ, Hampson JS, Rani MRS, Lacuey N, Tao S, Sainju RK, Friedman D, Nei M, Scott CA, Gehlbach B, Schuele SU, Ogren JA, Harper RM, Diehl B, Bateman LM, Devinsky O, Richerson GB, Zhang GQ, Lhatoo SD. PMID: 38870452; PMCID: PMC11759939.
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Altered 5-HT2A/C receptor binding in the medulla oblongata in the sudden infant death syndrome (SIDS): Part II. Age-associated alterations in serotonin receptor binding profiles within medullary nuclei supporting cardiorespiratory homeostasis. J Neuropathol Exp Neurol. 2024 02 21; 83(3):144-160. Cummings KJ, Leiter JC, Trachtenberg FL, Okaty BW, Darnall RA, Haas EA, Harper RM, Nattie EE, Krous HF, Mena OJ, Richerson GB, Dymecki SM, Kinney HC, Haynes RL. PMID: 38323418; PMCID: PMC10880067.
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Altered amygdala volumes and microstructure in focal epilepsy patients with tonic-clonic seizures, ictal, and post-convulsive central apnea. Epilepsia. 2023 12; 64(12):3307-3318. Zeicu C, Legouhy A, Scott CA, Oliveira JFA, Winston GP, Duncan JS, Vos SB, Thom M, Lhatoo S, Zhang H, Harper RM, Diehl B. PMID: 37857465; PMCID: PMC10952501.
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Intermittent hypoxia in neonatal rodents affects facial bone growth. PLoS One. 2023; 18(10):e0282937. Pae EK, Harper RM. PMID: 37819881; PMCID: PMC10566710.
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Brain Connectivity Correlates of Breathing and Cardiac Irregularities in SUDEP: A Resting-State fMRI Study. bioRxiv. 2023 May 22. Kassinopoulos M, Rolandi N, Alphan L, Harper RM, Oliveira J, Scott C, Kozák LR, Guye M, Lemieux L, Diehl B. PMID: 37293113; PMCID: PMC10245782.
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Volumetric and microstructural abnormalities of the amygdala in focal epilepsy with varied levels of SUDEP risk. Epilepsy Res. 2023 05; 192:107139. Legouhy A, Allen LA, Vos SB, Oliveira JFA, Kassinopoulos M, Winston GP, Duncan JS, Ogren JA, Scott C, Kumar R, Lhatoo SD, Thom M, Lemieux L, Harper RM, Zhang H, Diehl B. PMID: 37068421.
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Volumetric and microstructural abnormalities of the amygdala in focal epilepsy with varied levels of SUDEP risk. medRxiv. 2023 Apr 04. Legouhy A, Allen LA, Vos SB, Oliveira JFA, Kassinopoulos M, Winston GP, Duncan JS, Ogren JA, Scott C, Kumar R, Lhatoo SD, Thom M, Lemieux L, Harper RM, Zhang H, Diehl B. PMID: 36993394; PMCID: PMC10055456.
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Altered Amygdala Volumes and Microstructure in Focal Epilepsy Patients with Tonic-Clonic Seizures, Ictal and Post-Ictal Central Apnea. medRxiv. 2023 Mar 17. Zeicu C, Legouhy A, Scott CA, Oliveira JFA, Winston G, Duncan JS, Vos SB, Thom M, Lhatoo S, Zhang H, Harper RM, Diehl B. PMID: 36993530; PMCID: PMC10055587.
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Exploring the brain with sleep-related injuries, and fixing it. Sleep Adv. 2023; 4(1):zpad007. Harper RM. PMID: 37193272; PMCID: PMC10148654.
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Regional variation in brain tissue texture in patients with tonic-clonic seizures. PLoS One. 2022; 17(9):e0274514. Ogren JA, Allen LA, Roy B, Diehl B, Stern JM, Eliashiv DS, Lhatoo SD, Harper RM, Kumar R. PMID: 36137154; PMCID: PMC9499268.
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Intermittent Hypoxia Interferes with Autocrine Effects of GABA on Insulin Secretion in Postnatal Rodents-Implications for Pediatric Obstructive Sleep Apnea. Children (Basel). 2022 Aug 28; 9(9). Pae EK, Chung MK, Harper RM. PMID: 36138614; PMCID: PMC9497165.
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Inappropriate Ventilatory Homeostatic Responses in Hospitalized COVID-19 Patients. Front Neurol. 2022; 13:909915. Jareonsettasin P, Zeicu C, Diehl B, Harper RM, Astin R. PMID: 35785338; PMCID: PMC9240262.
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Baroreflex sensitivity during rest and pressor challenges in obstructive sleep apnea patients with and without CPAP. Sleep Med. 2022 09; 97:73-81. Pal A, Martinez F, Chatterjee R, Aysola RS, Harper RM, Macefield VG, Henderson LA, Macey PM. PMID: 35728308; PMCID: PMC11600971.
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Potential Mechanisms Underlying Hypoxia-Induced Diabetes in a Rodent Model: Implications for COVID-19. Children (Basel). 2021 Dec 14; 8(12). Pae EK, Harper RM. PMID: 34943374; PMCID: PMC8700366.
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Distinct Patterns of Brain Metabolism in Patients at Risk of Sudden Unexpected Death in Epilepsy. Front Neurol. 2021; 12:623358. Whatley BP, Winston JS, Allen LA, Vos SB, Jha A, Scott CA, Smith AL, Chowdhury FA, Bomanji JB, Lhatoo SD, Harper RM, Diehl B. PMID: 34899550; PMCID: PMC8651549.
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Neuromodulatory Support for Breathing and Cardiovascular Action During Development. Front Pediatr. 2021; 9:753215. Harper RM, Kesavan K. PMID: 34660498; PMCID: PMC8514987.
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Pilot Safety and Feasibility Study of Non-invasive Limb Proprioceptive Cerebellar Stimulation for Epilepsy. Front Neurol. 2021; 12:675947. Harper RM, Hertling D, Curtis A, Sauerland EK, De Giorgio CM. PMID: 34484096; PMCID: PMC8415900.
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Altered Relationship Between Heart Rate Variability and fMRI-Based Functional Connectivity in People With Epilepsy. Front Neurol. 2021; 12:671890. Kassinopoulos M, Harper RM, Guye M, Lemieux L, Diehl B. PMID: 34177777; PMCID: PMC8223068.
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Automated Analysis of Risk Factors for Postictal Generalized EEG Suppression. Front Neurol. 2021; 12:669517. Zhao X, Vilella L, Zhu L, Rani MRS, Hampson JP, Hampson J, Hupp NJ, Sainju RK, Friedman D, Nei M, Scott C, Allen L, Gehlbach BK, Schuele S, Harper RM, Diehl B, Bateman LM, Devinsky O, Richerson GB, Zhang GQ, Lhatoo SD, Lacuey N. PMID: 34046007; PMCID: PMC8148040.
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Which came first, obstructive sleep apnoea or hypertension? A retrospective study of electronic records over 10 years, with separation by sex. BMJ Open. 2021 03 23; 11(3):e041179. An E, Irwin MR, Doering LV, Brecht ML, Watson KE, Aysola RS, Aguila AP, Harper RM, Macey PM. PMID: 33757941; PMCID: PMC7993176.
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Insular functional organization during handgrip in females and males with obstructive sleep apnea. PLoS One. 2021; 16(2):e0246368. Pal A, Ogren JA, Aysola RS, Kumar R, Henderson LA, Harper RM, Macey PM. PMID: 33600443; PMCID: PMC7891756.
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Seizure Clusters, Seizure Severity Markers, and SUDEP Risk. Front Neurol. 2021; 12:643916. Ochoa-Urrea M, Lacuey N, Vilella L, Zhu L, Jamal-Omidi S, Rani MRS, Hampson JP, Dayyani M, Hampson J, Hupp NJ, Tao S, Sainju RK, Friedman D, Nei M, Scott C, Allen L, Gehlbach BK, Reick-Mitrisin V, Schuele S, Ogren J, Harper RM, Diehl B, Bateman LM, Devinsky O, Richerson GB, Zhang GQ, Lhatoo SD. PMID: 33643216; PMCID: PMC7907515.
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Functional organization of the insula in men and women with obstructive sleep apnea during Valsalva. Sleep. 2021 01 21; 44(1). Pal A, Ogren JA, Aguila AP, Aysola R, Kumar R, Henderson LA, Harper RM, Macey PM. PMID: 32592491; PMCID: PMC7819841.
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Association of Peri-ictal Brainstem Posturing With Seizure Severity and Breathing Compromise in Patients With Generalized Convulsive Seizures. Neurology. 2021 01 19; 96(3):e352-e365. Vilella L, Lacuey N, Hampson JP, Zhu L, Omidi S, Ochoa-Urrea M, Tao S, Rani MRS, Sainju RK, Friedman D, Nei M, Strohl K, Scott C, Allen L, Gehlbach BK, Hupp NJ, Hampson JS, Shafiabadi N, Zhao X, Reick-Mitrisin V, Schuele S, Ogren J, Harper RM, Diehl B, Bateman LM, Devinsky O, Richerson GB, Ryvlin P, Zhang GQ, Lhatoo SD. PMID: 33268557; PMCID: PMC7884980.
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Peri-ictal hypoxia is related to extent of regional brain volume loss accompanying generalized tonic-clonic seizures. Epilepsia. 2020 08; 61(8):1570-1580. Allen LA, Harper RM, Vos SB, Scott CA, Lacuey N, Vilella L, Winston JS, Whatley BP, Kumar R, Ogren J, Hampson JS, Rani S, Winston GP, Lemieux L, Lhatoo SD, Diehl B. PMID: 32683693; PMCID: PMC7496610.
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Postictal serotonin levels are associated with peri-ictal apnea. Neurology. 2019 10 08; 93(15):e1485-e1494. Murugesan A, Rani MRS, Vilella L, Lacuey N, Hampson JP, Faingold CL, Friedman D, Devinsky O, Sainju RK, Schuele S, Diehl B, Nei M, Harper RM, Bateman LM, Richerson G, Lhatoo SD. PMID: 31484709; PMCID: PMC7010327.
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The association of serotonin reuptake inhibitors and benzodiazepines with ictal central apnea. Epilepsy Behav. 2019 09; 98(Pt A):73-79. Lacuey N, Martins R, Vilella L, Hampson JP, Rani MRS, Strohl K, Zaremba A, Hampson JS, Sainju RK, Friedman D, Nei M, Scott C, Gehlbach BK, Hupp NJ, Schuele S, Ogren J, Harper RM, Allen L, Diehl B, Bateman LM, Devinsky O, Richerson GB, Lhatoo S. PMID: 31301453; PMCID: PMC8975169.
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Cerebellar, limbic, and midbrain volume alterations in sudden unexpected death in epilepsy. Epilepsia. 2019 04; 60(4):718-729. Allen LA, Vos SB, Kumar R, Ogren JA, Harper RK, Winston GP, Balestrini S, Wandschneider B, Scott CA, Ourselin S, Duncan JS, Lhatoo SD, Harper RM, Diehl B. PMID: 30868560; PMCID: PMC6479118.
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Neuroimaging of Sudden Unexpected Death in Epilepsy (SUDEP): Insights From Structural and Resting-State Functional MRI Studies. Front Neurol. 2019; 10:185. Allen LA, Harper RM, Lhatoo S, Lemieux L, Diehl B. PMID: 30891003; PMCID: PMC6413533.
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Incidence, Recurrence, and Risk Factors for Peri-ictal Central Apnea and Sudden Unexpected Death in Epilepsy. Front Neurol. 2019; 10:166. Vilella L, Lacuey N, Hampson JP, Rani MRS, Loparo K, Sainju RK, Friedman D, Nei M, Strohl K, Allen L, Scott C, Gehlbach BK, Zonjy B, Hupp NJ, Zaremba A, Shafiabadi N, Zhao X, Reick-Mitrisin V, Schuele S, Ogren J, Harper RM, Diehl B, Bateman LM, Devinsky O, Richerson GB, Tanner A, Tatsuoka C, Lhatoo SD. PMID: 30890997; PMCID: PMC6413671.
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Limbic and paralimbic structures driving ictal central apnea. Neurology. 2019 02 12; 92(7):e655-e669. Lacuey N, Hampson JP, Harper RM, Miller JP, Lhatoo S. PMID: 30635481; PMCID: PMC6382368.
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Postconvulsive central apnea as a biomarker for sudden unexpected death in epilepsy (SUDEP). Neurology. 2019 01 15; 92(3):e171-e182. Vilella L, Lacuey N, Hampson JP, Rani MRS, Sainju RK, Friedman D, Nei M, Strohl K, Scott C, Gehlbach BK, Zonjy B, Hupp NJ, Zaremba A, Shafiabadi N, Zhao X, Reick-Mitrisin V, Schuele S, Ogren J, Harper RM, Diehl B, Bateman L, Devinsky O, Richerson GB, Ryvlin P, Lhatoo SD. PMID: 30568003; PMCID: PMC6340388.
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Sex-specific hippocampus volume changes in obstructive sleep apnea. Neuroimage Clin. 2018; 20:305-317. Macey PM, Prasad JP, Ogren JA, Moiyadi AS, Aysola RS, Kumar R, Yan-Go FL, Woo MA, Albert Thomas M, Harper RM. PMID: 30101062; PMCID: PMC6083433.
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Regional cortical thickness changes accompanying generalized tonic-clonic seizures. Neuroimage Clin. 2018; 20:205-215. Ogren JA, Tripathi R, Macey PM, Kumar R, Stern JM, Eliashiv DS, Allen LA, Diehl B, Engel J, Rani MRS, Lhatoo SD, Harper RM. PMID: 30094170; PMCID: PMC6073085.
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Serum serotonin levels in patients with epileptic seizures. Epilepsia. 2018 06; 59(6):e91-e97. Murugesan A, Rani MRS, Hampson J, Zonjy B, Lacuey N, Faingold CL, Friedman D, Devinsky O, Sainju RK, Schuele S, Diehl B, Nei M, Harper RM, Bateman LM, Richerson G, Lhatoo SD. PMID: 29771456; PMCID: PMC6141199.
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Correlations between Waist and Neck Circumferences and Obstructive Sleep Apnea Characteristics. Sleep Vigil. 2018 Dec; 2(2):111-118. Tom C, Roy B, Vig R, Kang DW, Aysola RS, Woo MA, Harper RM, Kumar R. PMID: 30637368; PMCID: PMC6326580.
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Altered resting-state hippocampal and caudate functional networks in patients with obstructive sleep apnea. Brain Behav. 2018 06; 8(6):e00994. Song X, Roy B, Kang DW, Aysola RS, Macey PM, Woo MA, Yan-Go FL, Harper RM, Kumar R. PMID: 29749715; PMCID: PMC5991585.
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A description of externally recorded womb sounds in human subjects during gestation. PLoS One. 2018; 13(5):e0197045. Parga JJ, Daland R, Kesavan K, Macey PM, Zeltzer L, Harper RM. PMID: 29746604; PMCID: PMC5944959.
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Obstructive sleep apnea and cortical thickness in females and males. PLoS One. 2018; 13(3):e0193854. Macey PM, Haris N, Kumar R, Thomas MA, Woo MA, Harper RM. PMID: 29509806; PMCID: PMC5839576.
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Regional brain tissue changes and associations with disease severity in children with sleep-disordered breathing. Sleep. 2018 Feb 01; 41(2). Horne RSC, Roy B, Walter LM, Biggs SN, Tamanyan K, Weichard A, Nixon GM, Davey MJ, Ditchfield M, Harper RM, Kumar R. PMID: 29267958.
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The incidence and significance of periictal apnea in epileptic seizures. Epilepsia. 2018 03; 59(3):573-582. Lacuey N, Zonjy B, Hampson JP, Rani MRS, Zaremba A, Sainju RK, Gehlbach BK, Schuele S, Friedman D, Devinsky O, Nei M, Harper RM, Allen L, Diehl B, Millichap JJ, Bateman L, Granner MA, Dragon DN, Richerson GB, Lhatoo SD. PMID: 29336036; PMCID: PMC6103445.
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Dysfunctional Brain Networking among Autonomic Regulatory Structures in Temporal Lobe Epilepsy Patients at High Risk of Sudden Unexpected Death in Epilepsy. Front Neurol. 2017; 8:544. Allen LA, Harper RM, Kumar R, Guye M, Ogren JA, Lhatoo SD, Lemieux L, Scott CA, Vos SB, Rani S, Diehl B. PMID: 29085330; PMCID: PMC5650686.
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Obstructive sleep apnea is associated with altered midbrain chemical concentrations. Neuroscience. 2017 Nov 05; 363:76-86. Macey PM, Sarma MK, Prasad JP, Ogren JA, Aysola R, Harper RM, Thomas MA. PMID: 28893651; PMCID: PMC5983363.
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Reduced regional cerebral blood flow in patients with heart failure. Eur J Heart Fail. 2017 10; 19(10):1294-1302. Roy B, Woo MA, Wang DJJ, Fonarow GC, Harper RM, Kumar R. PMID: 28560737; PMCID: PMC5633487.
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Sex differences in insular cortex gyri responses to a brief static handgrip challenge. Biol Sex Differ. 2017; 8:13. Macey PM, Rieken NS, Ogren JA, Macey KE, Kumar R, Harper RM. PMID: 28435658; PMCID: PMC5397762.
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Non-Gaussian Diffusion Imaging Shows Brain Myelin and Axonal Changes in Obstructive Sleep Apnea. J Comput Assist Tomogr. 2017 Mar/Apr; 41(2):181-189. Tummala S, Roy B, Vig R, Park B, Kang DW, Woo MA, Aysola R, Harper RM, Kumar R. PMID: 27801694; PMCID: PMC5348287.
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Ripples on spikes show increased phase-amplitude coupling in mesial temporal lobe epilepsy seizure-onset zones. Epilepsia. 2016 11; 57(11):1916-1930. Weiss SA, Orosz I, Salamon N, Moy S, Wei L, Van't Klooster MA, Knight RT, Harper RM, Bragin A, Fried I, Engel J, Staba RJ. PMID: 27723936; PMCID: PMC5118142.
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Epiglottis cross-sectional area and oropharyngeal airway length in male and female obstructive sleep apnea patients. Nat Sci Sleep. 2016; 8:297-304. Ma MA, Kumar R, Macey PM, Yan-Go FL, Harper RM. PMID: 27757056; PMCID: PMC5055050.
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Neuroanatomical findings of significant translational importance : Comments on: Holstein, G. R., Friedrich, V. L., and Martinelli, G. P. Exp Brain Res (2016). doi:10.1007/s00221-016-4725-2. Exp Brain Res. 2016 10; 234(10):2745-6. Harper RM. PMID: 27586143.
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Accelerated Echo Planer J-resolved Spectroscopic Imaging of Putamen and Thalamus in Obstructive Sleep Apnea. Sci Rep. 2016 09 06; 6:31747. Sarma MK, Macey PM, Nagarajan R, Aysola R, Harper RM, Thomas MA. PMID: 27596614; PMCID: PMC5011642.
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Associations between brain white matter integrity and disease severity in obstructive sleep apnea. J Neurosci Res. 2016 10; 94(10):915-923. Tummala S, Roy B, Park B, Kang DW, Woo MA, Harper RM, Kumar R. PMID: 27315771; PMCID: PMC4990476.
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Clinical neurocardiology defining the value of neuroscience-based cardiovascular therapeutics. J Physiol. 2016 07 15; 594(14):3911-54. Shivkumar K, Ajijola OA, Anand I, Armour JA, Chen PS, Esler M, De Ferrari GM, Fishbein MC, Goldberger JJ, Harper RM, Joyner MJ, Khalsa SS, Kumar R, Lane R, Mahajan A, Po S, Schwartz PJ, Somers VK, Valderrabano M, Vaseghi M, Zipes DP. PMID: 27114333; PMCID: PMC4945719.
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Sex Differences in Insular Cortex Gyri Responses to the Valsalva Maneuver. Front Neurol. 2016; 7:87. Macey PM, Rieken NS, Kumar R, Ogren JA, Middlekauff HR, Wu P, Woo MA, Harper RM. PMID: 27375549; PMCID: PMC4899449.
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Lateralized Resting-State Functional Brain Network Organization Changes in Heart Failure. PLoS One. 2016; 11(5):e0155894. Park B, Roy B, Woo MA, Palomares JA, Fonarow GC, Harper RM, Kumar R. PMID: 27203600; PMCID: PMC4874547.
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The Cerebellum and SIDS: Disordered Breathing in a Mouse Model of Developmental Cerebellar Purkinje Cell Loss during Recovery from Hypercarbia. Front Neurol. 2016; 7:78. Calton MA, Howard JR, Harper RM, Goldowitz D, Mittleman G. PMID: 27242661; PMCID: PMC4865515.
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Aberrant Insular Functional Network Integrity in Patients with Obstructive Sleep Apnea. Sleep. 2016 05 01; 39(5):989-1000. Park B, Palomares JA, Woo MA, Kang DW, Macey PM, Yan-Go FL, Harper RM, Kumar R. PMID: 26943471; PMCID: PMC4835320.
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Detecting variable responses in time-series using repeated measures ANOVA: Application to physiologic challenges. F1000Res. 2016; 5:563. Macey PM, Schluter PJ, Macey KE, Harper RM. PMID: 27610219; PMCID: PMC4995690.
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Obstructive sleep apnea is associated with low GABA and high glutamate in the insular cortex. J Sleep Res. 2016 08; 25(4):390-4. Macey PM, Sarma MK, Nagarajan R, Aysola R, Siegel JM, Harper RM, Thomas MA. PMID: 26843332; PMCID: PMC4974152.
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Disrupted functional brain network organization in patients with obstructive sleep apnea. Brain Behav. 2016 03; 6(3):e00441. Park B, Palomares JA, Woo MA, Kang DW, Macey PM, Yan-Go FL, Harper RM, Kumar R. PMID: 27099802; PMCID: PMC4831421.
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Functional Imaging of Autonomic Regulation: Methods and Key Findings. Front Neurosci. 2015; 9:513. Macey PM, Ogren JA, Kumar R, Harper RM. PMID: 26858595; PMCID: PMC4726771.
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Global and Regional Brain Non-Gaussian Diffusion Changes in Newly Diagnosed Patients with Obstructive Sleep Apnea. Sleep. 2016 Jan 01; 39(1):51-7. Tummala S, Palomares J, Kang DW, Park B, Woo MA, Harper RM, Kumar R. PMID: 26285005; PMCID: PMC4678355.
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Impaired neural structure and function contributing to autonomic symptoms in congenital central hypoventilation syndrome. Front Neurosci. 2015; 9:415. Harper RM, Kumar R, Macey PM, Harper RK, Ogren JA. PMID: 26578872; PMCID: PMC4626648.
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Hypocretin Deficiency Associated with Narcolepsy Type 1 and Central Hypoventilation Syndrome in Neurosarcoidosis of the Hypothalamus. J Clin Sleep Med. 2015 Sep 15; 11(9):1063-5. Mayo MC, Deng JC, Albores J, Zeidler M, Harper RM, Avidan AY. PMID: 25979096; PMCID: PMC4543251.
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Water Exchange across the Blood-Brain Barrier in Obstructive Sleep Apnea: An MRI Diffusion-Weighted Pseudo-Continuous Arterial Spin Labeling Study. J Neuroimaging. 2015 Nov-Dec; 25(6):900-5. Palomares JA, Tummala S, Wang DJ, Park B, Woo MA, Kang DW, St Lawrence KS, Harper RM, Kumar R. PMID: 26333175; PMCID: PMC4562408.
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Structural imaging biomarkers of sudden unexpected death in epilepsy. Brain. 2015 Oct; 138(Pt 10):2907-19. Wandschneider B, Koepp M, Scott C, Micallef C, Balestrini S, Sisodiya SM, Thom M, Harper RM, Sander JW, Vos SB, Duncan JS, Lhatoo S, Diehl B. PMID: 26264515; PMCID: PMC4671481.
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Diffusion Tensor Imaging and Neurobehavioral Outcome in Children With Brain Tumors Treated With Chemotherapy. J Pediatr Oncol Nurs. 2016 Mar-Apr; 33(2):119-28. Baron Nelson M, Compton P, Macey PM, Patel SK, Jacob E, O'Neil S, Ogren J, Finlay JL, Harper RM. PMID: 26219302; PMCID: PMC5960591.
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Reduced regional brain cortical thickness in patients with heart failure. PLoS One. 2015; 10(5):e0126595. Kumar R, Yadav SK, Palomares JA, Park B, Joshi SH, Ogren JA, Macey PM, Fonarow GC, Harper RM, Woo MA. PMID: 25962164; PMCID: PMC4427362.
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Effects of thoracic pressure changes on MRI signals in the brain. J Cereb Blood Flow Metab. 2015 Jun; 35(6):1024-32. Wu P, Bandettini PA, Harper RM, Handwerker DA. PMID: 25712496; PMCID: PMC4640249.
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Regional hippocampal damage in heart failure. Eur J Heart Fail. 2015 May; 17(5):494-500. Woo MA, Ogren JA, Abouzeid CM, Macey PM, Sairafian KG, Saharan PS, Thompson PM, Fonarow GC, Hamilton MA, Harper RM, Kumar R. PMID: 25704495; PMCID: PMC4651448.
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Global and regional brain mean diffusivity changes in patients with heart failure. J Neurosci Res. 2015 Apr; 93(4):678-85. Woo MA, Palomares JA, Macey PM, Fonarow GC, Harper RM, Kumar R. PMID: 25502071; PMCID: PMC4329022.
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Brain metabolites in autonomic regulatory insular sites in heart failure. J Neurol Sci. 2014 Nov 15; 346(1-2):271-5. Woo MA, Yadav SK, Macey PM, Fonarow GC, Harper RM, Kumar R. PMID: 25248953; PMCID: PMC4252338.
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Fish oil (n-3 fatty acids) in drug resistant epilepsy: a randomised placebo-controlled crossover study. J Neurol Neurosurg Psychiatry. 2015 Jan; 86(1):65-70. DeGiorgio CM, Miller PR, Harper R, Gornbein J, Schrader L, Soss J, Meymandi S. PMID: 25201887.
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Global brain blood-oxygen level responses to autonomic challenges in obstructive sleep apnea. PLoS One. 2014; 9(8):e105261. Macey PM, Kumar R, Ogren JA, Woo MA, Harper RM. PMID: 25166862; PMCID: PMC4148259.
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Structural brain alterations in children an average of 5 years after surgery and chemotherapy for brain tumors. J Neurooncol. 2014 Sep; 119(2):317-26. Nelson MB, Macey PM, Harper RM, Jacob E, Patel SK, Finlay JL, Nelson MD, Compton P. PMID: 24830985; PMCID: PMC4146685.
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Cerebral blood flow velocity and vasomotor reactivity during autonomic challenges in heart failure. Nurs Res. 2014 May-Jun; 63(3):194-202. Serber SL, Rinsky B, Kumar R, Macey PM, Fonarow GC, Harper RM. PMID: 24785247; PMCID: PMC4024060.
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Insular cortex metabolite changes in obstructive sleep apnea. Sleep. 2014 May 01; 37(5):951-8. Yadav SK, Kumar R, Macey PM, Woo MA, Yan-Go FL, Harper RM. PMID: 24790274; PMCID: PMC3985111.
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Abnormal myelin and axonal integrity in recently diagnosed patients with obstructive sleep apnea. Sleep. 2014 Apr 01; 37(4):723-32. Kumar R, Pham TT, Macey PM, Woo MA, Yan-Go FL, Harper RM. PMID: 24899761; PMCID: PMC4044745.
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Treating obstructive sleep apnea with continuous positive airway pressure benefits type 2 diabetes management. Pancreas. 2014 Apr; 43(3):325-30. Zhong W, Tang YG, Zhao X, Go FY, Harper RM, Hui H. PMID: 24622059.
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Brain putamen volume changes in newly-diagnosed patients with obstructive sleep apnea. Neuroimage Clin. 2014; 4:383-91. Kumar R, Farahvar S, Ogren JA, Macey PM, Thompson PM, Woo MA, Yan-Go FL, Harper RM. PMID: 24567910; PMCID: PMC3930100.
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Affective brain areas and sleep-disordered breathing. Prog Brain Res. 2014; 209:275-93. Harper RM, Kumar R, Macey PM, Woo MA, Ogren JA. PMID: 24746053; PMCID: PMC4060533.
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Heart rate responses to autonomic challenges in obstructive sleep apnea. PLoS One. 2013; 8(10):e76631. Macey PM, Kumar R, Woo MA, Yan-Go FL, Harper RM. PMID: 24194842; PMCID: PMC3806804.
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Regional cerebral blood flow alterations in obstructive sleep apnea. Neurosci Lett. 2013 Oct 25; 555:159-64. Yadav SK, Kumar R, Macey PM, Richardson HL, Wang DJ, Woo MA, Harper RM. PMID: 24076138; PMCID: PMC3891908.
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Neural and physiological responses to a cold pressor challenge in healthy adolescents. J Neurosci Res. 2013 Dec; 91(12):1618-27. Richardson HL, Macey PM, Kumar R, Valladares EM, Woo MA, Harper RM. PMID: 24105663; PMCID: PMC4040139.
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Sleep-disordered breathing: effects on brain structure and function. Respir Physiol Neurobiol. 2013 Sep 15; 188(3):383-91. Harper RM, Kumar R, Ogren JA, Macey PM. PMID: 23643610; PMCID: PMC3778068.
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Response. J Magn Reson Imaging. 2013 Aug; 38(2):506-7. Kumar R, Harper RM. PMID: 23576461.
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Brain axial and radial diffusivity changes with age and gender in healthy adults. Brain Res. 2013 May 28; 1512:22-36. Kumar R, Chavez AS, Macey PM, Woo MA, Harper RM. PMID: 23548596; PMCID: PMC3654096.
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Visual assessment of brain magnetic resonance imaging detects injury to cognitive regulatory sites in patients with heart failure. J Card Fail. 2013 Feb; 19(2):94-100. Pan A, Kumar R, Macey PM, Fonarow GC, Harper RM, Woo MA. PMID: 23384634; PMCID: PMC4249656.
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Impaired cerebellar and limbic responses to the valsalva maneuver in heart failure. Cerebellum. 2012 Dec; 11(4):931-8. Ogren JA, Macey PM, Kumar R, Fonarow GC, Hamilton MA, Harper RM, Woo MA. PMID: 22370874.
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Sex differences in white matter alterations accompanying obstructive sleep apnea. Sleep. 2012 Dec 01; 35(12):1603-13. Macey PM, Kumar R, Yan-Go FL, Woo MA, Harper RM. PMID: 23204603; PMCID: PMC3490353.
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Altered global and regional brain mean diffusivity in patients with obstructive sleep apnea. J Neurosci Res. 2012 Oct; 90(10):2043-52. Kumar R, Chavez AS, Macey PM, Woo MA, Yan-Go FL, Harper RM. PMID: 22715089; PMCID: PMC3418429.
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Differential responses of the insular cortex gyri to autonomic challenges. Auton Neurosci. 2012 May 21; 168(1-2):72-81. Macey PM, Wu P, Kumar R, Ogren JA, Richardson HL, Woo MA, Harper RM. PMID: 22342370; PMCID: PMC4077282.
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Progressive gray matter changes in patients with congenital central hypoventilation syndrome. Pediatr Res. 2012 Jun; 71(6):701-6. Kumar R, Woo MS, Macey PM, Woo MA, Harper RM. PMID: 22343924; PMCID: PMC3638962.
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Decreased cortical thickness in central hypoventilation syndrome. Cereb Cortex. 2012 Aug; 22(8):1728-37. Macey PM, Moiyadi AS, Kumar R, Woo MA, Harper RM. PMID: 21965438; PMCID: PMC3500857.
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Perinatal intermittent hypoxia alters γ-aminobutyric acid: a receptor levels in rat cerebellum. Int J Dev Neurosci. 2011 Dec; 29(8):819-26. Pae EK, Yoon AJ, Ahuja B, Lau GW, Nguyen DD, Kim Y, Harper RM. PMID: 21964325.
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Regional brain axial and radial diffusivity changes during development. J Neurosci Res. 2012 Feb; 90(2):346-55. Kumar R, Nguyen HD, Macey PM, Woo MA, Harper RM. PMID: 21938736; PMCID: PMC3237749.
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Brain axonal and myelin evaluation in heart failure. J Neurol Sci. 2011 Aug 15; 307(1-2):106-13. Kumar R, Woo MA, Macey PM, Fonarow GC, Hamilton MA, Harper RM. PMID: 21612797; PMCID: PMC3150745.
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Global and regional putamen volume loss in patients with heart failure. Eur J Heart Fail. 2011 Jun; 13(6):651-5. Kumar R, Nguyen HD, Ogren JA, Macey PM, Thompson PM, Fonarow GC, Hamilton MA, Harper RM, Woo MA. PMID: 21393297; PMCID: PMC3101866.
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Development of T2-relaxation values in regional brain sites during adolescence. Magn Reson Imaging. 2011 Feb; 29(2):185-93. Kumar R, Delshad S, Macey PM, Woo MA, Harper RM. PMID: 20933351; PMCID: PMC3021653.
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RMSSD, a measure of vagus-mediated heart rate variability, is associated with risk factors for SUDEP: the SUDEP-7 Inventory. Epilepsy Behav. 2010 Sep; 19(1):78-81. DeGiorgio CM, Miller P, Meymandi S, Chin A, Epps J, Gordon S, Gornbein J, Harper RM. PMID: 20667792; PMCID: PMC2943000.
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Congenital central hypoventilation syndrome and the PHOX2B gene: a model of respiratory and autonomic dysregulation. Respir Physiol Neurobiol. 2010 Oct 31; 173(3):322-35. Patwari PP, Carroll MS, Rand CM, Kumar R, Harper R, Weese-Mayer DE. PMID: 20601214; PMCID: PMC2946468.
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Central nervous system changes in pediatric heart failure: a volumetric study. Pediatr Cardiol. 2010 Oct; 31(7):969-76. Menteer J, Macey PM, Woo MA, Panigrahy A, Harper RM. PMID: 20521036; PMCID: PMC2948160.
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Images in sleep medicine. Altered cerebral blood flow in a patient with congenital central hypoventilation syndrome. Sleep Med. 2010 Jun; 11(6):589-90. Macey PM, Kumar R, Ogren JA, Woo MA, Harper RM. PMID: 20466586; PMCID: PMC2900915.
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Relationship between obstructive sleep apnea severity and sleep, depression and anxiety symptoms in newly-diagnosed patients. PLoS One. 2010 Apr 16; 5(4):e10211. Macey PM, Woo MA, Kumar R, Cross RL, Harper RM. PMID: 20419135; PMCID: PMC2855711.
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Potential Mechanisms of Failure in the Sudden Infant Death Syndrome. Curr Pediatr Rev. 2010 Feb 01; 6(1):39-47. Harper RM, Kinney HC. PMID: 22792083; PMCID: PMC3392684.
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Dilated basilar arteries in patients with congenital central hypoventilation syndrome. Neurosci Lett. 2009 Dec 25; 467(2):139-43. Kumar R, Nguyen HD, Macey PM, Woo MA, Harper RM. PMID: 19822189; PMCID: PMC2786285.
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Mammillary body and fornix injury in congenital central hypoventilation syndrome. Pediatr Res. 2009 Oct; 66(4):429-34. Kumar R, Lee K, Macey PM, Woo MA, Harper RM. PMID: 19581831; PMCID: PMC3061446.
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Hippocampal volume reduction in congenital central hypoventilation syndrome. PLoS One. 2009 Jul 30; 4(7):e6436. Macey PM, Richard CA, Kumar R, Woo MA, Ogren JA, Avedissian C, Thompson PM, Harper RM. PMID: 19649271; PMCID: PMC2713409.
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Neural alterations associated with anxiety symptoms in obstructive sleep apnea syndrome. Depress Anxiety. 2009; 26(5):480-91. Kumar R, Macey PM, Cross RL, Woo MA, Yan-Go FL, Harper RM. PMID: 18828142; PMCID: PMC4041684.
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Brain injury in autonomic, emotional, and cognitive regulatory areas in patients with heart failure. J Card Fail. 2009 Apr; 15(3):214-23. Woo MA, Kumar R, Macey PM, Fonarow GC, Harper RM. PMID: 19327623; PMCID: PMC2730774.
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Mammillary bodies and fornix fibers are injured in heart failure. Neurobiol Dis. 2009 Feb; 33(2):236-42. Kumar R, Woo MA, Birrer BV, Macey PM, Fonarow GC, Hamilton MA, Harper RM. PMID: 19022386; PMCID: PMC2745998.
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Diffusion tensor imaging demonstrates brainstem and cerebellar abnormalities in congenital central hypoventilation syndrome. Pediatr Res. 2008 Sep; 64(3):275-80. Kumar R, Macey PM, Woo MA, Alger JR, Harper RM. PMID: 18458651; PMCID: PMC2682538.
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Neural alterations and depressive symptoms in obstructive sleep apnea patients. Sleep. 2008 Aug; 31(8):1103-9. Cross RL, Kumar R, Macey PM, Doering LV, Alger JR, Yan-Go FL, Harper RM. PMID: 18714782; PMCID: PMC2542956.
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Brain structural changes in obstructive sleep apnea. Sleep. 2008 Jul; 31(7):967-77. Macey PM, Kumar R, Woo MA, Valladares EM, Yan-Go FL, Harper RM. PMID: 18652092; PMCID: PMC2491498.
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Cognitive test performance and brain pathology. Nurs Res. 2008 Mar-Apr; 57(2):75-83. Serber SL, Kumar R, Woo MA, Macey PM, Fonarow GC, Harper RM. PMID: 18347478.
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Hyperoxic brain effects are normalized by addition of CO2. PLoS Med. 2007 May; 4(5):e173. Macey PM, Woo MA, Harper RM. PMID: 17518514; PMCID: PMC1872042.
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Aberrant central nervous system responses to the Valsalva maneuver in heart failure. Congest Heart Fail. 2007 Jan-Feb; 13(1):29-35. Woo MA, Macey PM, Keens PT, Kumar R, Fonarow GC, Hamilton MA, Harper RM. PMID: 17272960.
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Signs and symptoms of sleep-disordered breathing in trauma survivors: a matched comparison with classic sleep apnea patients. J Nerv Ment Dis. 2006 Jun; 194(6):433-9. Krakow B, Melendrez D, Warner TD, Clark JO, Sisley BN, Dorin R, Harper RM, Leahigh LK, Lee SA, Sklar D, Hollifield M. PMID: 16772861.
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Regional brain response patterns to Cheyne-Stokes breathing. Respir Physiol Neurobiol. 2006 Jan 25; 150(1):87-93. Henderson LA, Macey KE, Macey PM, Woo MA, Yan-Go FL, Harper RM. PMID: 16337439.
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Functional abnormalities in brain areas that mediate autonomic nervous system control in advanced heart failure. J Card Fail. 2005 Aug; 11(6):437-46. Woo MA, Macey PM, Keens PT, Kumar R, Fonarow GC, Hamilton MA, Harper RM. PMID: 16105635.
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Inspiratory loading elicits aberrant fMRI signal changes in obstructive sleep apnea. Respir Physiol Neurobiol. 2006 Mar 28; 151(1):44-60. Macey KE, Macey PM, Woo MA, Henderson LA, Frysinger RC, Harper RK, Alger JR, Yan-Go F, Harper RM. PMID: 15993658.
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Aberrant neural responses to cold pressor challenges in congenital central hypoventilation syndrome. Pediatr Res. 2005 Apr; 57(4):500-9. Macey PM, Macey KE, Woo MA, Keens TG, Harper RM. PMID: 15718375.
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FMRI responses to hyperoxia in congenital central hypoventilation syndrome. Pediatr Res. 2005 Apr; 57(4):510-8. Woo MA, Macey PM, Macey KE, Keens TG, Woo MS, Harper RK, Harper RM. PMID: 15718370.
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Intermittent hypoxia damages cerebellar cortex and deep nuclei. Neurosci Lett. 2005 Feb 28; 375(2):123-8. Pae EK, Chien P, Harper RM. PMID: 15670654.
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Geniohyoid muscle properties and myosin heavy chain composition are altered after short-term intermittent hypoxic exposure. J Appl Physiol (1985). 2005 Mar; 98(3):889-94. Pae EK, Wu J, Nguyen D, Monti R, Harper RM. PMID: 15557011.
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Hypercapnic exposure in congenital central hypoventilation syndrome reveals CNS respiratory control mechanisms. J Neurophysiol. 2005 Mar; 93(3):1647-58. Harper RM, Macey PM, Woo MA, Macey KE, Keens TG, Gozal D, Alger JR. PMID: 15525806.
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Functional magnetic resonance imaging during hypotension in the developing animal. J Appl Physiol (1985). 2004 Dec; 97(6):2248-57. Henderson LA, Macey PM, Richard CA, Runquist ML, Harper RM. PMID: 15220298.
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Temporal trends of cardiac and respiratory responses to ventilatory challenges in congenital central hypoventilation syndrome. Pediatr Res. 2004 Jun; 55(6):953-9. Macey PM, Valderama C, Kim AH, Woo MA, Gozal D, Keens TG, Harper RK, Harper RM. PMID: 15028846.
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Activity changes of the cat paraventricular hypothalamus during stressor exposure. Neuroreport. 2004 Jan 19; 15(1):43-8. Kristensen MP, Rector DM, Poe GR, Harper RM. PMID: 15106829.
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Impaired arousals and sudden infant death syndrome: preexisting neural injury? Am J Respir Crit Care Med. 2003 Dec 01; 168(11):1262-3. Harper RM. PMID: 14644917.
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Functional magnetic resonance signal changes in neural structures to baroreceptor reflex activation. J Appl Physiol (1985). 2004 Feb; 96(2):693-703. Henderson LA, Richard CA, Macey PM, Runquist ML, Yu PL, Galons JP, Harper RM. PMID: 14565965.
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Late-developing rostral ventrolateral medullary surface responses to cardiovascular challenges during sleep. Brain Res. 2003 Sep 19; 985(1):65-77. Richard CA, Rector DM, Macey PM, Ali N, Harper RM. PMID: 12957369.
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Regional brain gray matter loss in heart failure. J Appl Physiol (1985). 2003 Aug; 95(2):677-84. Woo MA, Macey PM, Fonarow GC, Hamilton MA, Harper RM. PMID: 12716866.
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fMRI responses to cold pressor challenges in control and obstructive sleep apnea subjects. J Appl Physiol (1985). 2003 Apr; 94(4):1583-95. Harper RM, Macey PM, Henderson LA, Woo MA, Macey KE, Frysinger RC, Alger JR, Nguyen KP, Yan-Go FL. PMID: 12514164.
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Brain responses associated with the Valsalva maneuver revealed by functional magnetic resonance imaging. J Neurophysiol. 2002 Dec; 88(6):3477-86. Henderson LA, Macey PM, Macey KE, Frysinger RC, Woo MA, Harper RK, Alger JR, Yan-Go FL, Harper RM. PMID: 12466462.
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Structural mechanisms underlying autonomic reactions in pediatric arousal. Sleep Med. 2002 Dec; 3 Suppl 2:S53-6. Harper RM, Richard CA, Henderson LA, Macey PM, Macey KE. PMID: 14592381.
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Brain morphology associated with obstructive sleep apnea. Am J Respir Crit Care Med. 2002 Nov 15; 166(10):1382-7. Macey PM, Henderson LA, Macey KE, Alger JR, Frysinger RC, Woo MA, Harper RK, Yan-Go FL, Harper RM. PMID: 12421746.
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Neural responses during Valsalva maneuvers in obstructive sleep apnea syndrome. J Appl Physiol (1985). 2003 Mar; 94(3):1063-74. Henderson LA, Woo MA, Macey PM, Macey KE, Frysinger RC, Alger JR, Yan-Go F, Harper RM. PMID: 12433858.
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Neural responses to intravenous serotonin revealed by functional magnetic resonance imaging. J Appl Physiol (1985). 2002 Jan; 92(1):331-42. Henderson LA, Yu PL, Frysinger RC, Galons JP, Bandler R, Harper RM. PMID: 11744676.
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Visualization of sleep influences on cerebellar and brainstem cardiac and respiratory control mechanisms. Brain Res Bull. 2000 Sep 01; 53(1):125-31. Harper RM, Woo MA, Alger JR. PMID: 11033217.
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Lateralized and widespread brain activation during transient blood pressure elevation revealed by magnetic resonance imaging. J Comp Neurol. 2000 Feb 07; 417(2):195-204. Harper RM, Bandler R, Spriggs D, Alger JR. PMID: 10660897.
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Sleep influences on homeostatic functions: implications for sudden infant death syndrome. Respir Physiol. 2000 Feb; 119(2-3):123-32. Harper RM, Kinney HC, Fleming PJ, Thach BT. PMID: 10722855.
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Regional brain activation in humans during respiratory and blood pressure challenges. Clin Exp Pharmacol Physiol. 1998 Jun; 25(6):483-6. Harper RM, Gozal D, Bandler R, Spriggs D, Lee J, Alger J. PMID: 9673830.
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