Hiroki Nariai

Title(s)HS Assistant Clinical Professor, Pediatrics
SchoolMedicine
ORCID ORCID Icon0000-0002-8318-2924 Additional info
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    Collapse Biography 
    Collapse Education and Training
    Keio University School of Medicine, TokyoMD03/2005Medicine
    Keio University School of Medicine, TokyoPhD10/2019Medicine
    University of California, Los Angeles, CAMS06/2020Clinical Research
    Albert Einstein College of Medicine, NY06/2016Child Neurology
    University of California, Los Angeles, CA06/2017Clinical Neurophysiology
    University of California, Los Angeles, CA06/2018Epilepsy

    Collapse Overview 

    Collapse Research 
    Collapse Research Activities and Funding
    Refining neurophysiological biomarkers of epilepsy using deep learning to guide pediatric epilepsy surgery
    NIH/NINDS 1K23NS128318Apr 1, 2023 - Mar 31, 2028
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Mini-Seizures: Novel Interictal iEEG Biomarker Capturing Synchronization Network Dynamics at the Epileptogenic Zone. medRxiv. 2025 Feb 02. Monsoor T, Kanai S, Daida A, Kuroda N, Sinha P, Oana S, Zhang Y, Liu L, Singh G, Duan C, Sim MS, Fallah A, Speier W, Asano E, Roychowdhury V, Nariai H. PMID: 39974054; PMCID: PMC11838652.
      View in: PubMed   Mentions:
    2. Fast ripple band high-frequency activity associated with thalamic sleep spindles in pediatric epilepsy. Clin Neurophysiol. 2025 Jan 30. Daida A, Ding Y, Zhang Y, Oana S, Panchavati S, Edmonds BD, Ahn SS, Salamon N, Sankar R, Fallah A, Staba RJ, Engel J, Speier W, Roychowdhury V, Nariai H. PMID: 39915224.
      View in: PubMed   Mentions:    Fields:    
    3. Symptomatic vigabatrin-associated MRI toxicity is associated with simultaneous hormonal therapy among patients with infantile spasms. Epilepsia Open. 2024 Nov 21. Sathe R, Shrestha G, Terango A, Tabibzadeh D, Rajaraman RR, Nariai H, Hussain SA. PMID: 39570186.
      View in: PubMed   Mentions:    Fields:    
    4. Self-Supervised Data-Driven Approach Defines Pathological High-Frequency Oscillations in Human. medRxiv. 2024 Nov 05. Zhang Y, Daida A, Liu L, Kuroda N, Ding Y, Oana S, Kanai S, Monsoor T, Duan C, Hussain SA, Qiao JX, Salamon N, Fallah A, Sim MS, Sankar R, Staba RJ, Engel J, Asano E, Roychowdhury V, Nariai H. PMID: 39040207; PMCID: PMC11261948.
      View in: PubMed   Mentions:
    5. Multi-disciplinary team approach for pediatric hemimegalencephaly: Insights from a single institutional case series. Epilepsia Open. 2024 Dec; 9(6):2510-2517. Edmonds B, Ngo JP, Groves A, Reyes B, Gott RA, Chia DJ, Mirbaha H, Magaki S, Khanlou N, Pineles SL, Salamon N, Thompson RM, Newman M, Rajaraman RR, Hussain SA, Fallah A, Russell B, Nariai H. PMID: 39442533; PMCID: PMC11633684.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    6. Overnight Electroencephalogram to Forecast Epilepsy Development in Children with Autism Spectrum Disorders. J Pediatr. 2024 Nov; 274:114217. Daida A, Oana S, Nadkarni D, Espiritu BL, Edmonds BD, Stanecki C, Samuel AS, Rao LM, Rajaraman RR, Hussain SA, Matsumoto JH, Sankar R, Hannauer PS, Nariai H. PMID: 39074735.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    7. Bilateral centromedian nucleus of thalamus responsive neurostimulation for pediatric-onset drug-resistant epilepsy. Epilepsia. 2024 Aug; 65(8):e131-e140. Ahn S, Edmonds B, Rajaraman RR, Rao LM, Hussain SA, Matsumoto JH, Sankar R, Salamon N, Fallah A, Nariai H. PMID: 38845459; PMCID: PMC11315622.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    8. WONOEP 2022: Neurotechnology for the diagnosis of epilepsy. Epilepsia. 2024 Aug; 65(8):2238-2247. Wagstyl K, Kobow K, Casillas-Espinosa PM, Cole AJ, Jiménez-Jiménez D, Nariai H, Baulac S, O'Brien T, Henshall DC, Akman O, Sankar R, Galanopoulou AS, Auvin S. PMID: 38829313.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. PyHFO: lightweight deep learning-powered end-to-end high-frequency oscillations analysis application. J Neural Eng. 2024 May 28; 21(3). Zhang Y, Liu L, Ding Y, Chen X, Monsoor T, Daida A, Oana S, Hussain S, Sankar R, Fallah A, Santana-Gomez C, Engel J, Staba RJ, Speier W, Zhang J, Nariai H, Roychowdhury V. PMID: 38722308; PMCID: PMC11135143.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansAnimals
    10. Uncovering spatiotemporal dynamics of the corticothalamic network at ictal onset. Epilepsia. 2024 Jul; 65(7):1989-2003. Panchavati S, Daida A, Edmonds B, Miyakoshi M, Oana S, Ahn SS, Arnold C, Salamon N, Sankar R, Fallah A, Speier W, Nariai H. PMID: 38662128; PMCID: PMC11251868.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    11. Computational EEG attributes predict response to therapy for epileptic spasms. Clin Neurophysiol. 2024 Jul; 163:39-46. Rajaraman RR, Smith RJ, Oana S, Daida A, Shrey DW, Nariai H, Lopour BA, Hussain SA. PMID: 38703698.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. Epileptic spasms relapse is associated with response latency but not conventional attributes of post-treatment EEG. Epilepsia Open. 2024 Jun; 9(3):1034-1041. Deckard E, Sathe R, Tabibzadeh D, Terango A, Groves A, Rajaraman RR, Nariai H, Hussain SA. PMID: 38588009; PMCID: PMC11145600.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    13. Biomimetic Deep Learning Networks With Applications to Epileptic Spasms and Seizure Prediction. IEEE Trans Biomed Eng. 2024 03; 71(3):1056-1067. Lucasius C, Grigorovsky V, Nariai H, Galanopoulou AS, Gursky J, Moshe SL, Bardakjian BL. PMID: 37851549; PMCID: PMC10979638.
      View in: PubMed   Mentions:    Fields:    
    14. Hemispheric epilepsy surgery for hemimegalencephaly: The UCLA experience. Epilepsia. 2024 Jan; 65(1):57-72. Goel K, Phillips HW, Chen JS, Ngo J, Edmonds B, Ha PX, Wang A, Weil A, Russell BE, Salamon N, Nariai H, Fallah A. PMID: 37873610.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    15. EEG-based spatiotemporal dynamics of fast ripple networks and hubs in infantile epileptic spasms. Epilepsia Open. 2024 Feb; 9(1):122-137. Samfira IMA, Galanopoulou AS, Nariai H, Gursky JM, Moshé SL, Bardakjian BL. PMID: 37743321; PMCID: PMC10839371.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    16. Structural connections of the centromedian nucleus of thalamus and their relevance for neuromodulation in generalized drug-resistant epilepsy: insight from a tractography study. Ther Adv Neurol Disord. 2023; 16:17562864231202064. Remore LG, Rifi Z, Nariai H, Eliashiv DS, Fallah A, Edmonds BD, Matsumoto JH, Salamon N, Tolossa M, Wei W, Locatelli M, Tsolaki EC, Bari AA. PMID: 37822361; PMCID: PMC10563482.
      View in: PubMed   Mentions: 1  
    17. Uncovering Spatiotemporal Dynamics of the Corticothalamic Network during Seizures. medRxiv. 2023 Aug 22. Panchavati S, Daida A, Edmonds B, Miyakoshi M, Oana S, Ahn SS, Arnold C, Salamon N, Sankar R, Fallah A, Speier W, Nariai H. PMID: 37662245; PMCID: PMC10473800.
      View in: PubMed   Mentions:
    18. Optimizing detection and deep learning-based classification of pathological high-frequency oscillations in epilepsy. Clin Neurophysiol. 2023 10; 154:129-140. Monsoor T, Zhang Y, Daida A, Oana S, Lu Q, Hussain SA, Fallah A, Sankar R, Staba RJ, Speier W, Roychowdhury V, Nariai H. PMID: 37603979; PMCID: PMC10861270.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    19. Characteristics of ictal thalamic EEG in pediatric-onset neocortical focal epilepsy. Clin Neurophysiol. 2023 10; 154:116-125. Edmonds B, Miyakoshi M, Gianmaria Remore L, Ahn S, Westley Phillips H, Daida A, Salamon N, Bari A, Sankar R, Matsumoto JH, Fallah A, Nariai H. PMID: 37595481; PMCID: PMC10529874.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    20. Characteristics of ictal thalamic EEG in pediatric-onset neocortical focal epilepsy. medRxiv. 2023 Jun 29. Edmonds B, Miyakoshi M, Remore LG, Ahn S, Phillips HW, Daida A, Salamon N, Bari A, Sankar R, Matsumoto JH, Fallah A, Nariai H. PMID: 37425697; PMCID: PMC10327240.
      View in: PubMed   Mentions:
    21. Optimizing Detection and Deep Learning-based Classification of Pathological High-Frequency Oscillations in Epilepsy. medRxiv. 2023 Apr 17. Monsoor T, Zhang Y, Daida A, Oana S, Lu Q, Hussain SA, Fallah A, Sankar R, Staba RJ, Speier W, Roychowdhury V, Nariai H. PMID: 37131743; PMCID: PMC10153337.
      View in: PubMed   Mentions:
    22. Characterizing physiological high-frequency oscillations using deep learning. J Neural Eng. 2022 12 07; 19(6). Zhang Y, Chung H, Ngo JP, Monsoor T, Hussain SA, Matsumoto JH, Walshaw PD, Fallah A, Sim MS, Asano E, Sankar R, Staba RJ, Engel J, Speier W, Roychowdhury V, Nariai H. PMID: 36541546; PMCID: PMC10364130.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    23. The consequence of financial incentives for not prescribing antibiotics: a Japan's nationwide quasi-experiment. Int J Epidemiol. 2022 10 13; 51(5):1645-1655. Okubo Y, Nishi A, Michels KB, Nariai H, Kim-Farley RJ, Arah OA, Uda K, Kinoshita N, Miyairi I. PMID: 35353127; PMCID: PMC10233477.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    24. Ictal Electroencephalographic Characteristics of Nodding Syndrome: A Comparative Case-Series from South Sudan, Tanzania, and Uganda. Ann Neurol. 2022 07; 92(1):75-80. Mazumder R, Lagoro DK, Nariai H, Danieli A, Eliashiv D, Engel J, Dalla Bernardina B, Kegele J, Lerche H, Sejvar J, Matuja W, Schmutzhard E, Bonanni P, De Polo G, Wagner T, Winkler AS. PMID: 35438201; PMCID: PMC9544008.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    25. Real-World Preliminary Experience With Responsive Neurostimulation in Pediatric Epilepsy: A Multicenter Retrospective Observational Study. Neurosurgery. 2021 11 18; 89(6):997-1004. Nagahama Y, Zervos TM, Murata KK, Holman L, Karsonovich T, Parker JJ, Chen JS, Phillips HW, Fajardo M, Nariai H, Hussain SA, Porter BE, Grant GA, Ragheb J, Wang S, O'Neill BR, Alexander AL, Bollo RJ, Fallah A. PMID: 34528103; PMCID: PMC8637802.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    26. Automated preprocessing and phase-amplitude coupling analysis of scalp EEG discriminates infantile spasms from controls during wakefulness. Epilepsy Res. 2021 12; 178:106809. Miyakoshi M, Nariai H, Rajaraman RR, Bernardo D, Shrey DW, Lopour BA, Sim MS, Staba RJ, Hussain SA. PMID: 34823159.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    27. Refining epileptogenic high-frequency oscillations using deep learning: a reverse engineering approach. Brain Commun. 2022; 4(1):fcab267. Zhang Y, Lu Q, Monsoor T, Hussain SA, Qiao JX, Salamon N, Fallah A, Sim MS, Asano E, Sankar R, Staba RJ, Engel J, Speier W, Roychowdhury V, Nariai H. PMID: 35169696; PMCID: PMC8833577.
      View in: PubMed   Mentions: 8  
    28. Change in clinical practice variations for antibiotic prescriptions across different pediatric clinics: A Japan's nationwide observational study. J Infect Chemother. 2021 Nov; 27(11):1621-1625. Okubo Y, Nariai H, Michels KB, Kim-Farley RJ, Nishi A, Arah OA, Kinoshita N, Uda K, Miyairi I. PMID: 34376349.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    29. Objective interictal electrophysiology biomarkers optimize prediction of epilepsy surgery outcome. Brain Commun. 2021; 3(2):fcab042. Kuroda N, Sonoda M, Miyakoshi M, Nariai H, Jeong JW, Motoi H, Luat AF, Sood S, Asano E. PMID: 33959709; PMCID: PMC8088817.
      View in: PubMed   Mentions: 25  
    30. Scalp EEG interictal high frequency oscillations as an objective biomarker of infantile spasms. Clin Neurophysiol. 2020 11; 131(11):2527-2536. Nariai H, Hussain SA, Bernardo D, Motoi H, Sonoda M, Kuroda N, Asano E, Nguyen JC, Elashoff D, Sankar R, Bragin A, Staba RJ, Wu JY. PMID: 32927206; PMCID: PMC7606823.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    31. Trends in hospitalization and readmission for pediatric epilepsy and underutilization of epilepsy surgery in the United States. Seizure. 2020 Aug; 80:263-269. Okubo Y, Fallah A, Hayakawa I, Handa A, Nariai H. PMID: 32471799.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    32. Interictal scalp fast ripple occurrence and high frequency oscillation slow wave coupling in epileptic spasms. Clin Neurophysiol. 2020 07; 131(7):1433-1443. Bernardo D, Nariai H, Hussain SA, Sankar R, Wu JY. PMID: 32387963.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    33. The effects of antihistamine on the duration of the febrile seizure: A single center study with a systematic review and meta-analysis. Brain Dev. 2020 Feb; 42(2):103-112. Sugitate R, Okubo Y, Nariai H, Matsui A. PMID: 31677915.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    34. Pathological high frequency oscillations associate with increased GABA synaptic activity in pediatric epilepsy surgery patients. Neurobiol Dis. 2020 02; 134:104618. Cepeda C, Levinson S, Nariai H, Yazon VW, Tran C, Barry J, Oikonomou KD, Vinters HV, Fallah A, Mathern GW, Wu JY. PMID: 31629890; PMCID: PMC6980668.
      View in: PubMed   Mentions: 18     Fields:    Translation:HumansCells
    35. Prospective observational study: Fast ripple localization delineates the epileptogenic zone. Clin Neurophysiol. 2019 11; 130(11):2144-2152. Nariai H, Hussain SA, Bernardo D, Fallah A, Murata KK, Nguyen JC, Rajaraman RR, Rao LM, Matsumoto JH, Lerner JT, Salamon N, Elashoff D, Sankar R, Wu JY. PMID: 31569042.
      View in: PubMed   Mentions: 17     Fields:    Translation:Humans
    36. Recent treatment patterns and variations for pediatric acute encephalopathy in Japan. Brain Dev. 2020 Jan; 42(1):48-55. Hayakawa I, Okubo Y, Nariai H, Michihata N, Matsui H, Fushimi K, Yasunaga H. PMID: 31522789.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    37. Scalp EEG high frequency oscillations as a biomarker of treatment response in epileptic encephalopathy with continuous spike-and-wave during sleep (CSWS). Seizure. 2019 Oct; 71:151-157. Cao D, Chen Y, Liao J, Nariai H, Li L, Zhu Y, Zhao X, Hu Y, Wen F, Zhai Q. PMID: 31351306.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    38. Recent practice patterns in diagnostic procedures anticonvulsants, and antibiotics for children hospitalized with febrile seizure. Seizure. 2019 Apr; 67:52-56. Okubo Y, Hayakawa I, Nariai H, Michihata N, Matsui H, Fushimi K, Yasunaga H. PMID: 30903922.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    39. Interrater reliability in visual identification of interictal high-frequency oscillations on electrocorticography and scalp EEG. Epilepsia Open. 2018 Dec; 3(Suppl Suppl 2):127-132. Nariai H, Wu JY, Bernardo D, Fallah A, Sankar R, Hussain SA. PMID: 30564771; PMCID: PMC6293061.
      View in: PubMed   Mentions: 13     Fields:    
    40. National survey of factors associated with repeated admissions due to febrile seizure. Seizure. 2018 Oct; 61:149-152. Okubo Y, Handa A, Nariai H. PMID: 30153626.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    41. Visual and semi-automatic non-invasive detection of interictal fast ripples: A potential biomarker of epilepsy in children with tuberous sclerosis complex. Clin Neurophysiol. 2018 07; 129(7):1458-1466. Bernardo D, Nariai H, Hussain SA, Sankar R, Salamon N, Krueger DA, Sahin M, Northrup H, Bebin EM, Wu JY, UCLA Pediatric Epilepsy Group, TACERN Study Group. PMID: 29673547.
      View in: PubMed   Mentions: 19     Fields:    Translation:Humans
    42. Scalp EEG Ictal gamma and beta activity during infantile spasms: Evidence of focality. Epilepsia. 2017 05; 58(5):882-892. Nariai H, Beal J, Galanopoulou AS, Mowrey WB, Bickel S, Sogawa Y, Jehle R, Shinnar S, Moshé SL. PMID: 28397999; PMCID: PMC5429878.
      View in: PubMed   Mentions: 14     Fields:    Translation:Humans
    43. Extended Clinical Spectrum of Anti-N-Methyl-d-Aspartate Receptor Encephalitis in Children: A Case Series. Pediatr Neurol. 2017 Jul; 72:51-55. Goenka A, Jain V, Nariai H, Spiro A, Steinschneider M. PMID: 28506503.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    44. Treatment of Epileptic Encephalopathies: Current State of the Art. J Child Neurol. 2018 Jan; 33(1):41-54. Nariai H, Duberstein S, Shinnar S. PMID: 28134012; PMCID: PMC5494023.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    45. Prenatally Diagnosed Aggressive Intracranial Immature Teratoma-Clinicopathological Correlation. Fetal Pediatr Pathol. 2016; 35(4):260-4. Nariai H, Price DE, Jada A, Weintraub L, Weidenheim KM, Gomes WA, Levy AS, Abbott R, Malbari F. PMID: 27158748.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    46. Ictal high-frequency oscillations at 80-200 Hz coupled with delta phase in epileptic spasms. Epilepsia. 2011 Oct; 52(10):e130-4. Nariai H, Matsuzaki N, Juhász C, Nagasawa T, Sood S, Chugani HT, Asano E. PMID: 21972918; PMCID: PMC3674760.
      View in: PubMed   Mentions: 35     Fields:    Translation:Humans
    47. Statistical mapping of ictal high-frequency oscillations in epileptic spasms. Epilepsia. 2011 Jan; 52(1):63-74. Nariai H, Nagasawa T, Juhász C, Sood S, Chugani HT, Asano E. PMID: 21087245; PMCID: PMC3051422.
      View in: PubMed   Mentions: 56     Fields:    Translation:Humans
    48. An outbreak of aseptic meningitis due to echovirus 30 in a high school baseball club--possible role of severe exercise for a high attack rate. Intern Med. 2009; 48(19):1767-71. Hayashi T, Shirayoshi T, Nagano T, Yaoita H, Kogure S, Nariai H, Natsumeda T, Taniuchi M, Sandoh M, Sato Y. PMID: 19797835.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansPHPublic Health
    49. How can we ameliorate irinotecan-associated diarrhea in children with poor compliance for oral cephalosporin? Pediatr Blood Cancer. 2009 Jan; 52(1):145. Nariai H, Shitara T, Oto Y, Natsumeda T, Taniuchi M, Sato Y. PMID: 18798559.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
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