Spatiotemporal Brain Activity during Hiragana Recognition Task
The authors recorded nineteen-channel event-related potentials (ERPs) during recognition of one type of Japanese character; Hiragana (one type of phonetic characters). By field-sequential stereoscopic 3D display with liquid crystal shutter, a word and a non-word were simultaneously and independently presented to the left (right) and the right (left) eyes, respectively. Each word consists of three Hiragana characters. Three subjects were instructed to press a button after they understood the meaning of the visual stimuli after 3000 ms poststimulus. Equivalent current dipole source localization (ECDL) with three unconstrained ECD was applied to the ERPs. The ECDs were localized to the Wemickes area at around 600ms. The latter ECD for one left-handed subject was localized at the Wernickes homologue. After that ECDs were localized to the prefrontal area, the superior frontal gyrus and the middle frontal gyrus. Then at around 800ms, the ECDs were localized to the Brocas area and after that ECDs were localized again to the Wernickes area and then to Brocas area.
Electroencephalogram Brain Activity Event Related Potential Equivalent Current Dipole Source Localization Word Recognition
Hisashi Toyoshima Toshimasa Yamazaki Takahiro Yamanoi Shin-ichi Ohnishi
Japan Technical Software Sapporo, Japan Department of Bioscienee and Bioinformatics, Kyushu Institute of Technology Iizuka, Japan Dept. Engineering, Hokkai-Gakuen University Sapporo, Japan
国际会议
哈尔滨
英文
113-117
2010-08-01（万方平台首次上网日期，不代表论文的发表时间）