The relationship between the visually evoked P300 event-related potential and gamma band oscillation in the human medial and basal temporal lobes: An electrocorticographic study

N. Watanabe, N. Hirai, T. Maehara, K. Kawai, H. Shimizu, F. Miwakeichi, S. Uchida*

*この研究の対応する著者

研究成果査読

15 被引用数 (Scopus)

抄録

We have recorded electrocorticographic activities (ECoG) from subdural electrodes on the human medial temporal lobe (MTL) and basal temporal lobe (BTL) in epileptic patients during cognitive visual tasks designed to evoke the P300 event related potential (ERP). From those recordings we examined the event related gamma band oscillation (ERGBO) and P300 ERP. While P300 was predominantly observed in the MTL, ERGBO was observed in both MTL and BTL. Resembling to P300, ERGBO responses were more often observed following rare stimuli than frequent stimuli. In average responses the ERGBO to rare stimuli followed P300, beginning at 440.5 ms and continuing for about 100 ms. Past studies suggest P300 ERP component reflects a role in cognitive function. Since ERGBO in the present study appeared in different regions and at a different latency from P300, ERGBO may reflect a different physiological role in the cognitive process.

本文言語English
ページ(範囲)421-427
ページ数7
ジャーナルNeuroscience Research
44
4
DOI
出版ステータスPublished - 2002 12 1
外部発表はい

ASJC Scopus subject areas

  • 神経科学(全般)

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