Analysis of EEG phase properties with pulse and noise stimuli in visual cortex (V1)

作者：Ogawa Yutaro^*; Takeno Shohei; Kotani Kiyoshi; Jimbo Yasuhiko

来源：Electronics and Communications in Japan, 2012, 95(7): 58-64.

DOI：10.1002/ecj.11368

• EEG phase property
• visual stimulus
• WSTA

The event-related potential (ERP) of brain EEG (electroencephalogram) activity plays an important role in EEG phase synchronization and/or hemodynamic responses measured by fMRI (functional magnetic resonance imaging). However, the specific mechanism of ERP generation is still unclear. In this study, pulse and noise-type visual stimuli were administered to subjects. Then the phase response of the EEG in a-waves was analyzed. The magnitudes of the phase response were found to vary with the stimulus administered phase and no power increase was observed. These results indicate that the ERP in a-waves is generated by phase resetting of brain activity.

• 出版日期2012-7