Vidyasagar T R
John Curtin School of Medical Research, Centre for Visual Science and Division of Psychology, The Australian National University, Canberra, ACT.
Neuroreport. 1998 Jun 22;9(9):1947-52. doi: 10.1097/00001756-199806220-00006.
Neuronal responses were recorded from the striate cortex of monkeys trained to perform visual discrimination at locations in the visual field to which their attention was drawn. A subset of neurons showed vigorous responses to visual stimuli for trials in which the monkey was directing its attention to the respective receptive field location. In trials where attention is directed elsewhere, responses to the same stimuli were significantly reduced. In some cells the early response component was not modulated by attention, but later components were affected by the locus of attention. The results suggest the operation of a feedback in the paradigm that spotlights a topographically restricted area of V1 for further processing at higher levels.
从经过训练能在视野中其注意力被吸引的位置执行视觉辨别任务的猴子的纹状皮层记录神经元反应。对于猴子将注意力指向各自感受野位置的试验，一部分神经元对视觉刺激表现出强烈反应。在注意力指向其他地方的试验中，对相同刺激的反应显著降低。在一些细胞中，早期反应成分不受注意力调节，但后期成分受注意力位置的影响。结果表明在该范式中存在一种反馈操作，它突出了V1的一个地形学上受限的区域以便在更高水平进行进一步处理。
