DEXTROUS DIGITAL MOVEMENTS OF THE NON-PREFERRED HAND IN NORMAL SUBJECTS
作者机构：Institute of Neurology Shanghai Medical University Shanghai
出 版 物：《中华医学杂志(英文版)》 (Chinese Medical Journal)
年 卷 期：1988年第101卷第3期
页 面：203-203页
核心收录：
摘 要：It was thought that simple finger movements are commanded by the contralateral cerebral hemisphere. Dextrous digital movements mastered in the postnatal period, however, may be preprogramed in one hemisphere only, that is, the dominant hemisphere for manual movements. The encoded signals are sent to the opposite hemisphere through a myriad commissural fibers in the corpus callosum. Writing, drawing and paper cutting with scissors of either hand were tested in 46 normal subjects. Scissors cutting of both hands were basically similar in the 46 subjects. Of the 38 right-handed persons who had never written with the left hand previously, theideographs written and simple figures drawn with the left hand for the first time were quite similar to those with the right hand. Four dextral illiterates could only be tested on drawing. The simple figures drawn with either hand of these 4 persons, though rather poor, were very similar. Four left handed persons had already learned to write with the right hand. In them the ideographs and drawings made with the left hand were very close to those executed with the right. It seems that the dextrous digital movements of both hands were under the command of a common hemisphere.
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