认知过程中大脑两半球的协同活动——若干实验结果的分析和再分析

COORDINATE ACTIVITIES OF THE TWO HEMISPHERES IN THE RECOGNIZING PROCESS: ANALYSES AND RE-ANALYSIS ON SOME EXPEREMENTAL RESULTS

本文对以往裂脑患者、右半球摘除患者和正常被试的若干实验结果进行了综合性的二次分析;同时对双脑协同活动的机制进行了讨论。依据实验资料提出双脑协同话动的两种可能的模式:〈1〉双脑互补模式;〈2〉双脑互扰模式。 统览以往文献,觉得把实验数据的算术平均数或某些概率运算的结果作为大脑一侧优势的指标可能是欠妥当的,因为它忽略了数据本身的性质。依据从三种视野所分别获得的数据可能具有向量性质,故建议: 〈1〉用左、右视野所获数据的向量差作为双脑协同活动中协同程度或协同水平的指标; 〈2〉把三组数据放在平面直角坐标系中分析,把左、右视野数据与中问视野数据之间的夹角差数作为单侧视野相对认知优势的指标。

Some results accquired in the past in experements on cases of Split-Brain, Right-Hemispherictomy and normal subjects were analysed and re-analysed in this paper. Simultaneously, the problem with the mechanism ofthe coordination activities between the two hemispheres was also discussed. On the basis of our experemental data, we also attempted to suggestthat there may be two possible models of the coordination activities in thebrain. (1) Two hemispheres work in coordination; (2) Two hemisphereswork in interference. After conscientionsly reading a large number of literature, we sensedthat it is inappropriate to take the arithmetic mean of the experemental dataas the indication of the lateral dominance of the brain. According to the ectorial nature of experemental data obtained throughunilateral visual field, we propose that: (1) To make the vector difference of the data from both left and rightvisual fields as the indication of the coordinate level between the two hemi-spheres. (2) To make the angular dfference between the vector value from LVF and RVF as the indication of the relative domination of the right or leftvisual field in a recognizing activity.