侧性效应的意义。
The significance of laterality effects.
作者信息
Warrington E K, Pratt R T
出版信息
J Neurol Neurosurg Psychiatry. 1981 Mar;44(3):193-6. doi: 10.1136/jnnp.44.3.193.
Language laterality can be unequivocally ascertained by comparing the effects of unilateral ECT to the right and the left hemisphere. It has been shown in right-handed depressed patients that a unilateral treatment to the left hemisphere resulted in transient dysphasia whereas unilateral ECT to the right hemisphere did not. The language laterality in a small group of left-handed depressed patients has been ascertained. Evidence is presented to show that neither dichotic listening nor hand position for writing provide satisfactory indices of language laterality. The ear advantage was more closely related to strength of sinistrality than to language laterality--that is sidedness appears to overide brainedness. The results favour a spatial attention hypothesis rather than a structural hypothesis as the main determinant of laterality effects.
通过比较单侧电休克疗法作用于右半球和左半球的效果，可以明确确定语言偏向性。在右利手的抑郁症患者中已经表明，对左半球进行单侧治疗会导致短暂性言语困难，而对右半球进行单侧电休克疗法则不会。一小群左利手抑郁症患者的语言偏向性已得到确定。有证据表明，双耳分听和书写时的手位都不能提供令人满意的语言偏向性指标。耳朵优势与左利手程度的关系比与语言偏向性的关系更为密切——也就是说，利手似乎比脑优势更具决定性。结果支持空间注意假说而非结构假说作为偏向性效应的主要决定因素。
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