在无纹状皮层情况下对移动和静止光栅的检测。

Detection of moving and stationary gratings in the absence of striate cortex.

作者信息

Magnussen S, Mathiesen T

机构信息

Vision Laboratory, Institute of Psychology, University of Oslo, Norway.

出版信息

Neuropsychologia. 1989;27(5):725-8. doi: 10.1016/0028-3932(89)90117-6.

DOI:10.1016/0028-3932(89)90117-6

PMID:2739894

Abstract

A 30-yr-old woman whose left occipital lobe had been removed because of an arteriovenous malformation was tested for her ability to detect stationary flashing and moving luminance gratings in the right (blind) visual field. With stationary gratings the performance remained close to chance level, but with moving gratings her performance on a 2AFC task rose to an average of close to 68% during 1200 trials. Signals mediated via midbrain structures might be the basis for the above-chance detection of movement.

摘要

一名30岁女性因患有动静脉畸形而切除了左枕叶，对其在右（盲）视野中检测静止闪烁和移动亮度光栅的能力进行了测试。对于静止光栅，其表现接近随机水平，但对于移动光栅，在1200次试验中，她在二选一迫选任务中的表现平均上升至近68%。经由中脑结构介导的信号可能是上述高于随机水平的运动检测的基础。