Weiskrantz L, Passingham C
Brain Res. 1975 Mar 28;86(3):389-97. doi: 10.1016/0006-8993(75)90890-2.
The purpose of the experiment was to determine which features of a visual discrimination task were used by rats with total striate cortex ablations. The task was vertical black and white stripes versus grey matched in flux. Probe trials were inserted in which stripes of two different orientations or a speckled pattern were substituted for either the positive or negative stimulus. It was found that the destriated rats were normal in response to stripes of different orientations, but showed a deficit with the speckled pattern. A finer analysis suggests that the latter finding reflected an increased preference for the speckled pattern by the destriated group.
该实验的目的是确定完全损毁纹状皮层的大鼠在视觉辨别任务中使用了哪些特征。任务是垂直的黑白条纹与通量匹配的灰色进行对比。插入了探测试验，其中将两种不同方向的条纹或斑点图案替代正性或负性刺激。结果发现，纹状皮层损毁的大鼠对不同方向的条纹反应正常，但对斑点图案表现出缺陷。更精细的分析表明，后一发现反映了纹状皮层损毁组对斑点图案的偏好增加。
