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Activities

Employment (2)

Ricoh (Japan): Tokyo, JP

2016-04-01 to present | R&D, Clinical development, Planning (Medical imaging)
Employment
Source: Self-asserted source
Eiichi Okumura

Yokogawa Electric (Japan): Tokyo, JP

2007-04-01 to 2016-03-31 | Research & Development engineer (MEG center)
Employment
Source: Self-asserted source
Eiichi Okumura

Education and qualifications (3)

Tohoku University: Sendai, JP

2010-10-01 to 2014-03-31 | Ph.D. (Department of Epileptology, Tohoku University Graduate School of Medicine)
Education
Source: Self-asserted source
Eiichi Okumura

Kanazawa University: Kanazawa, Ishikawa, JP

2005-04-01 to 2007-03-31 | M.Eng. (Division of Electrical Engineering and Computer Science, Natural Science & Technology, Kanazawa University Graduate School)
Education
Source: Self-asserted source
Eiichi Okumura

Kanazawa University: Kanazawa, Ishikawa, JP

2001-04-01 to 2005-03-31 | B. Eng. (Department of Information and Systems Engineering)
Education
Source: Self-asserted source
Eiichi Okumura

Works (20)

Reliability of Spectral Features of Resting-State Brain Activity: A Magnetoencephalography Study

Cureus
2024-01-20 | Journal article
Part of ISSN: 2168-8184
Contributors: Eiichi Okumura; Hideyuki Hoshi; Hirofumi Morise; Naohiro Okumura; Keisuke Fukasawa; Sayuri Ichikawa; Takashi Asakawa; Yoshihito Shigihara
Source: Self-asserted source
Eiichi Okumura

MEG Frequency Analysis Depicts the Impaired Neurophysiological Condition of Ischemic Brain

PLOS ONE
2016-12-16 | Journal article
Part of ISSN: 1932-6203
Contributors: Shinichi Sakamoto; Hidetoshi Ikeda; Naohiro Tsuyuguchi; Takehiro Uda; Eiichi Okumura; Takashi Asakawa; Yasuhiro Haruta; Hideki Nishiyama; Toyoji Okada; Hajime Kamada et al.
Source: Self-asserted source
Eiichi Okumura

Sex Differences in Gamma Band Functional Connectivity Between the Frontal Lobe and Cortical Areas During an Auditory Oddball Task, as Revealed by Imaginary Coherence Assessment

The Open Neuroimaging Journal
2016-08-31 | Journal article
Part of ISSN: 1874-4400
Contributors: Toshiro Fujimoto; Eiichi Okumura; Atsushi Kodabashi; Kouzou Takeuchi; Toshiaki Otsubo; Katsumi Nakamura; Kazutaka Yatsushiro; Masaki Sekine; Shinichiro Kamiya; Susumu Shimooki et al.
Source: Self-asserted source
Eiichi Okumura

High‐gamma power changes after cognitive intervention: preliminary results from twenty‐one senior adult subjects

Brain and Behavior
2016-03 | Journal article
Part of ISSN: 2162-3279
Part of ISSN: 2162-3279
Contributors: Yoritaka Akimoto; Takayuki Nozawa; Akitake Kanno; Toshimune Kambara; Mizuki Ihara; Takeshi Ogawa; Takakuni Goto; Yasuyuki Taki; Ryoichi Yokoyama; Yuka Kotozaki et al.
Source: Self-asserted source
Eiichi Okumura

High frequency oscillations are less frequent but more specific to epileptogenicity during rapid eye movement sleep

Clinical Neurophysiology
2016-01 | Journal article
Part of ISSN: 1388-2457
Contributors: Rie Sakuraba; Masaki Iwasaki; Eiichi Okumura; Kazutaka Jin; Yosuke Kakisaka; Kazuhiro Kato; Teiji Tominaga; Nobukazu Nakasato
Source: Self-asserted source
Eiichi Okumura

Detection of Phase–Amplitude Coupling in MEG Source Space: An Empirical Study

Electromagnetic Brain Imaging
2015 | Book chapter
Part of ISBN: 9783319149462
Part of ISBN: 9783319149479
Contributors: Kensuke Sekihara; Srikantan S. Nagarajan
Source: Self-asserted source
Eiichi Okumura

Attentional Control and Interpretation of Facial Expression after Oxytocin Administration to Typically Developed Male Adults

PLOS ONE
2015-02-06 | Journal article
Part of ISSN: 1932-6203
Contributors: Tetsu Hirosawa; Mitsuru Kikuchi; Eiichi Okumura; Yuko Yoshimura; Hirotoshi Hiraishi; Toshio Munesue; Natsumi Takesaki; Naoki Furutani; Yasuki Ono; Haruhiro Higashida et al.
Source: Self-asserted source
Eiichi Okumura

Electro- and magneto-encephalographic spike source localization of small focal cortical dysplasia in the dorsal peri-rolandic region

Clinical Neurophysiology
2014-12 | Journal article
Part of ISSN: 1388-2457
Contributors: Hisashi Itabashi; Kazutaka Jin; Masaki Iwasaki; Eiichi Okumura; Akitake Kanno; Kazuhiro Kato; Teiji Tominaga; Ryuta Kawashima; Nobukazu Nakasato
Source: Self-asserted source
Eiichi Okumura

High-gamma activity in an attention network predicts individual differences in elderly adults' behavioral performance

NeuroImage
2014-10 | Journal article
Part of ISSN: 1053-8119
Contributors: Yoritaka Akimoto; Takayuki Nozawa; Akitake Kanno; Mizuki Ihara; Takakuni Goto; Takeshi Ogawa; Toshimune Kambara; Motoaki Sugiura; Eiichi Okumura; Ryuta Kawashima
Source: Self-asserted source
Eiichi Okumura
grade
Preferred source (of 2)‎

Time-varying inter-hemispheric coherence during corpus callosotomy

Clinical Neurophysiology
2013-11 | Journal article
Part of ISSN: 1388-2457
Contributors: Eiichi Okumura; Masaki Iwasaki; Rie Sakuraba; Izumi Itabashi; Shin-ichiro Osawa; Kazutaka Jin; Hisashi Itabashi; Kazuhiro Kato; Akitake Kanno; Teiji Tominaga et al.
Source: Self-asserted source
Eiichi Okumura

The Brain’s Response to the Human Voice Depends on the Incidence of Autistic Traits in the General Population

PLoS ONE
2013-11-20 | Journal article
Part of ISSN: 1932-6203
Contributors: Yuko Yoshimura; Mitsuru Kikuchi; Sanae Ueno; Eiichi Okumura; Hirotoshi Hiraishi; Chiaki Hasegawa; Gerard B. Remijn; Kiyomi Shitamichi; Toshio Munesue; Tsunehisa Tsubokawa et al.
Source: Self-asserted source
Eiichi Okumura

Disturbed Resting Functional Inter-Hemispherical Connectivity of the Ventral Attentional Network in Alpha Band Is Associated with Unilateral Spatial Neglect

PLoS ONE
2013-09-04 | Journal article
Part of ISSN: 1932-6203
Contributors: Tsutomu Sasaki; Masayuki Abe; Eiichi Okumura; Toyoji Okada; Kimito Kondo; Kensuke Sekihara; Wataru Ide; Hajime Kamada
Source: Self-asserted source
Eiichi Okumura

Optogenetically Induced Seizure and the Longitudinal Hippocampal Network Dynamics

PLoS ONE
2013-04-10 | Journal article
Part of ISSN: 1932-6203
Contributors: Shin-ichiro Osawa; Masaki Iwasaki; Ryosuke Hosaka; Yoshiya Matsuzaka; Hiroshi Tomita; Toru Ishizuka; Eriko Sugano; Eiichi Okumura; Hiromu Yawo; Nobukazu Nakasato et al.
Source: Self-asserted source
Eiichi Okumura

Dysfunctional Cortical Connectivity During the Auditory Oddball Task in Patients with Schizophrenia

The Open Neuroimaging Journal
2013-04-05 | Journal article
Part of ISSN: 1874-4400
Contributors: Toshiro Fujimoto; Eiichi Okumura; Kouzou Takeuchi; Atsushi Kodabashi; Toshiaki Otsubo; Katsumi Nakamura; Shinichiro Kamiya; Yuji Higashi; Tadahiko Yuji; Kenichi Honda et al.
Source: Self-asserted source
Eiichi Okumura

Spatiotemporal Dynamics of High-Gamma Activities during a 3-Stimulus Visual Oddball Task

PLoS ONE
2013-03-21 | Journal article
Part of ISSN: 1932-6203
Contributors: Yoritaka Akimoto; Akitake Kanno; Toshimune Kambara; Takayuki Nozawa; Motoaki Sugiura; Eiichi Okumura; Ryuta Kawashima
Source: Self-asserted source
Eiichi Okumura

sLORETA-qm for interictal MEG epileptic spike analysis: Comparison of location and quantity with equivalent dipole estimation

Clinical Neurophysiology
2012-08 | Journal article
Part of ISSN: 1388-2457
Contributors: T. Uda; N. Tsuyuguchi; E. Okumura; S. Sakamoto; M. Morino; T. Nagata; H. Ikeda; N. Kunihiro; T. Takami; K. Ohata
Source: Self-asserted source
Eiichi Okumura

Extension of Quantifiable Modification of sLORETA for Induced Oscillatory Changes in Magnetoencephalography

The Open Neuroimaging Journal
2012-06-15 | Journal article
Part of ISSN: 1874-4400
Contributors: Takehiro Uda; Naohiro Tsuyuguchi; Eiichi Okumura; Yoshihito Shigihara; Takashi Nagata; Yuzo Terakawa; Shinichi Sakamoto; Kenji Ohata
Source: Self-asserted source
Eiichi Okumura

Changes in Event-Related Desynchronization and Synchronization during the Auditory Oddball Task in Schizophrenia Patients

The Open Neuroimaging Journal
2012-06-01 | Journal article
Part of ISSN: 1874-4400
Contributors: Toshiro Fujimoto; Eiichi Okumura; Kouzou Takeuchi; Atsushi Kodabashi; Hiroaki Tanaka; Toshiaki Otsubo; Katsumi Nakamura; Masaki Sekine; Shinichiro Kamiya; Yuji Higashi et al.
Source: Self-asserted source
Eiichi Okumura

Spatiotemporal frequency characteristics of cerebral oscillations during the perception of fundamental frequency contour changes in one-syllable intonation

Neuroscience Letters
2012-05 | Journal article
Part of ISSN: 0304-3940
Contributors: Sanae Ueno; Eiichi Okumura; Gerard B. Remijn; Yuko Yoshimura; Mitsuru Kikuchi; Kiyomi Shitamichi; Kikuko Nagao; Masayuki Mochiduki; Yasuhiro Haruta; Norio Hayashi et al.
Source: Self-asserted source
Eiichi Okumura

Oxytocin attenuates feelings of hostility depending on emotional context and individuals' characteristics

Scientific Reports
2012-04-26 | Journal article
Part of ISSN: 2045-2322
Contributors: Tetsu Hirosawa; Mitsuru Kikuchi; Haruhiro Higashida; Eiichi Okumura; Sanae Ueno; Kiyomi Shitamichi; Yuko Yoshimura; Toshio Munesue; Tsunehisa Tsubokawa; Yasuhiro Haruta et al.
Source: Self-asserted source
Eiichi Okumura