Effects of stimulus intensity of electrical stimulation on functional MRI and MEG

K. Iramina, H. Kamei, T. Kato, K. Ugurbil, M. Yumoto, S. Ueno

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

To clarify the relationships between neuronal activity and the hemodynamic response, activations of the primary somatosensory cortex were studied using MEG (magnetoencepahlogram) and fMRI (functional magnetic resonance imaging). Effects of the stimulus intensity of the electrical stimulation to the right thumb was investigated. We focused on the number of activated pixcels, time courses of hemodynamic response obtained by fMRI and dipole moments of neuromagnetic activity. When the stimulus intensity increased to the pain feeling in the fMRI experiments, a number of activated pixels and signal power which was defined as the integration value of NMR signal were increase steeply, however, this inclination did not correspond to the neuronal activity.

本文言語英語
ホスト出版物のタイトルAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
出版社IEEE
ページ1073
ページ数1
ISBN(印刷版)0780356756
出版ステータス出版済み - 1999
外部発表はい
イベントProceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS) - Atlanta, GA, USA
継続期間: 10月 13 199910月 16 1999

出版物シリーズ

名前Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
2
ISSN(印刷版)0589-1019

その他

その他Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS)
CityAtlanta, GA, USA
Period10/13/9910/16/99

!!!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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