Gainotti G
Acta Neurol Belg. 1979 Mar-Apr;79(2):92-104.
There seems to be some lack of agreement between clinical and experimental findings pertaining to the neurodynamic mechanisms of visuo-constructive disabilities in right and left brain-damaged patients. Clinical studies have revealed qualitative differences between drawing disabilities of right and left hemispheric origin, while experimental data suggest that the same mechanism underlies both types of constructional disorder. In order to reconcile these conflicting findings, the existence of "nuclear" impairment and more "peripheral" disturbances in constructional apraxia is suggested. Nuclear impairment seems to consist of a visuo-perceptive disorder independent of the hemispheric locus of lesion; peripheral disturbance could be different in right and left brain-damaged patients, motor and symbolic disorders being typical of left-sided lesions while unilateral spatial neglect would be characteristic of right hemispheric injuries.
关于右脑和左脑损伤患者视觉构建障碍的神经动力学机制，临床研究结果与实验结果之间似乎存在一些不一致。临床研究揭示了右脑和左脑起源的绘图障碍之间的质性差异，而实验数据表明，这两种类型的构建障碍都有相同的机制。为了调和这些相互矛盾的发现，有人提出在构建性失用症中存在“核心”损伤和更多“外周”干扰。核心损伤似乎由一种独立于病变半球位置的视觉感知障碍组成；外周干扰在右脑和左脑损伤患者中可能不同，运动和符号障碍是左侧病变的典型表现，而单侧空间忽视则是右半球损伤的特征。
