Inouye T, Toi S, Matsumoto Y, Shinosaki K, Iyama A, Hosaka N
Department of Psychiatry, Osaka University Medical School, Suita City, Osaka, Japan.
Brain Topogr. 1996 Summer;8(4):379-84. doi: 10.1007/BF01186913.
EEG relationships in delta, theta, alpha and beta frequency bands as well as the whole frequency range among 12 electrode locations during resting and mental arithmetic were examined by use of Shannon-Gelfand-Yaglom information measure (SGY) in 10 normal subjects. The EEG relationships were represented in a 3-dimensional (3-D) feature space with multidimensional scaling (MDS). MDS resulted in an anterior-posterior, a left-right and an upper-lower axis. In all 5 frequency bands, the 12 electrodes on the anterior-posterior and left-right axes resembled their actual positions on the scalp during resting and mental arithmetic. During mental arithmetic, prominent changes in the 3-D representation of electrode sites were visualized for activity. The isolation of left and right mid-temporal locations, together with greater EEG distances between left and right mid-temporal locations, were notable during mental arithmetic, suggesting the simultaneous activation possibly in dominant and non-dominant hemispheres and contralateral influences from left to right mid-temporal locations.
利用香农 - 盖尔范德 - 亚格洛姆信息测度（SGY）对10名正常受试者在静息和心算期间12个电极位置的δ、θ、α和β频段以及整个频率范围内的脑电图关系进行了研究。脑电图关系通过多维标度法（MDS）在三维（3 - D）特征空间中表示。MDS产生了前后、左右和上下轴。在所有5个频段中，前后轴和左右轴上的12个电极在静息和心算期间类似于它们在头皮上的实际位置。在心算期间，电极位点的3 - D表示中的显著变化可通过活动可视化。在进行心算时，左、右颞中位置的分离以及左、右颞中位置之间更大的脑电图距离值得注意，这表明可能在优势半球和非优势半球同时激活，并且从左颞中位置到右颞中位置存在对侧影响。
