Tojo Y
Shinrigaku Kenkyu. 1978 Dec;49(5):288-91. doi: 10.4992/jjpsy.49.288.
EEG was recorded from the left and the right parietal areas in normal subjects with eyes-closed while they were engaged in mental arithmetic, recalls of verbal (Japanese kanji characters, kana syllabary, and the alphabet) and visual (scenery) imageries. Fourier analysis of EEG revealed attenuations of the alpha activity (a) in the left hemisphere during the mental arithmetic, (b) in the right hemisphere during the visual imagination of a scenery, and (c) in the both hemispheres during the kanji imagery accompanies by a stroke-count task. Results suggest that the kanji characters seem to activate cognitive processes of the both hemispheres. No attenuation of the alpha activity in the both hemispheres was seen during either the alphabet or kana syllabary imagery.
在正常受试者闭眼状态下，记录其左、右顶叶区域在进行心算、回忆文字（日文汉字、假名音节和字母表）及视觉（风景）意象时的脑电图。脑电图的傅里叶分析显示，（a）心算时左半球的α波活动减弱；（b）在对风景进行视觉想象时右半球的α波活动减弱；（c）在进行汉字意象并伴有笔画计数任务时，两半球的α波活动均减弱。结果表明，汉字似乎能激活两半球的认知过程。在字母表或假名音节意象过程中，两半球的α波活动均未减弱。
