Allman J, Miezin F, McGuinness E
Perception. 1985;14(2):105-26. doi: 10.1068/p140105.
The true receptive field of more than 90% of neurons in the middle temporal visual area (MT) extends well beyond the classical receptive field (crf), as mapped with conventional bar or spot stimuli, and includes a surrounding region that is 50 to 100 times the area of the crf. These extensive surrounds are demonstrated by simultaneously stimulating the crf and the surround with moving stimuli. The surrounds commonly have directional and velocity-selective influences that are antagonistic to the response from the crf. The crfs of MT neurons are organized in a topographic representation of the visual field. Thus MT neurons are embedded in an orderly visuotopic array, but are capable of integrating local stimulus conditions within a global context. The extensive surrounds of MT neurons may be involved in figure-ground discrimination, preattentive vision, perceptual constancies, and depth perception through motion cues.
颞中区(MT)中超过90%的神经元的真实感受野远远超出了传统条形或点状刺激所映射的经典感受野(crf),并包括一个比crf面积大50到100倍的周边区域。通过用移动刺激同时刺激crf和周边区域,可以证明这些广泛的周边区域。周边区域通常具有与crf反应相拮抗的方向和速度选择性影响。MT神经元的crf以视野的地形图表示形式组织起来。因此,MT神经元被嵌入到一个有序的视拓扑阵列中,但能够在全局背景下整合局部刺激条件。MT神经元广泛的周边区域可能通过运动线索参与图形-背景辨别、前注意视觉、知觉恒常性和深度感知。