NIRS measurement of hemodynamic evoked responses in the primary sensorimotor cortex

Mingdi Xu, Hirotsugu Takata, Sheng Ge, Takehito Hayami, Takao Yamasaki, Shozo Tobimatsu, Keiji Iramina

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

6 被引用数 (Scopus)

抄録

To investigate the relationship between neuronal activity and hemodynamics, we carried out a near-infrared spectroscopy (NIRS) study to measure the regional changes of hemoglobin concentration associated with cortical activation in the human sensorimotor cortex (SMI) to both voluntary and nonvoluntary tasks. We measured the hemodynamic evoked responses to voluntary finger movement and nonvoluntary electrical stimulation applied on the Angers (thumb and ring finger, respectively). Measurements were performed on 6 healthy right-handed volunteers using block paradigms and we analyzed both the spatial/temporal features and the magnitude of the optical signal induced by cerebral activation during these protocols. We constantly observed an increase in the cerebral concentration of oxygenated hemoglobin at the cortical side contralateral to the stimulated side. Our findings are in agreement with results in positron emission tomography (PET), functional magnetic resonance imaging (fMRI) and EEG (Electroencephalogram).

本文言語英語
ホスト出版物のタイトル29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07
ページ2492-2495
ページ数4
DOI
出版ステータス出版済み - 12月 1 2007
イベント29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07 - Lyon, フランス
継続期間: 8月 23 20078月 26 2007

出版物シリーズ

名前Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
ISSN(印刷版)0589-1019

その他

その他29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07
国/地域フランス
CityLyon
Period8/23/078/26/07

!!!All Science Journal Classification (ASJC) codes

  • 信号処理
  • 生体医工学
  • コンピュータ ビジョンおよびパターン認識
  • 健康情報学

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