Tressoldi P E
Dipartimento di Psicologia Generale, Università di Padova, Italy.
Neuropsychologia. 1987;25(4):625-36. doi: 10.1016/0028-3932(87)90053-4.
The relationship between the representation of the extracorporeal visual hemispace and the contralateral hemisphere has been investigated by presenting visual stimuli foveally either in the right or in the left hemispace. In a lexical decision task (Exp. 1) and a face-familiarity decision task (Exp. 2) lateral asymmetries very similar to those obtained using the divided visual field technique have been found. These results suggest that under particular circumstances the hemispace representation in the contralateral hemisphere overrides the retinal representation. Finally, it was found that in a lexical decision task performance with stimuli in the right hemispace was very similar to that with stimuli in a central position. The physiological and adaptive meaning of this phenomenon is discussed.
通过向右侧或左侧半视野的中央凹呈现视觉刺激，研究了体外视觉半空间的表征与对侧半球之间的关系。在词汇判定任务（实验1）和面孔熟悉度判定任务（实验2）中，发现了与使用视野分割技术所获得的非常相似的侧向不对称性。这些结果表明，在特定情况下，对侧半球中的半空间表征会超越视网膜表征。最后，发现在词汇判定任务中，右侧半视野刺激的表现与中央位置刺激的表现非常相似。讨论了这一现象的生理和适应性意义。
