Wylie D R, Frost B J
Department of Psychology, Queen's University, Kingston, Ontario, Canada.
Vis Neurosci. 1990 Nov;5(5):489-95. doi: 10.1017/s0952523800000614.
Previous electrophysiological studies have shown that neurons in the nucleus of the basal optic root (nBOR) of the pigeon respond best to wholefield stimuli moving slowly in a particular direction in the contralateral visual field. In this study, we have found that some nBOR neurons respond to wholefield stimulation of both eyes. These binocular neurons have spatially separate receptive fields in both visual fields. Some binocular neurons prefer the same direction of wholefield motion in both eyes, and thus respond best to wholefield visual motion which would result from translation movements of the bird, either ascent, descent, or forward and backward motion. Other neurons prefer opposite directions of wholefield motion in each eye and therefore respond optimally to wholefield visual motion simulating rotational movements of the bird, either roll or yaw. These binocular neurons may play a crucial part in the locomotor behavior of the pigeon by providing visual information distinguishing translational and rotational movements.
先前的电生理研究表明，鸽子基底视根核（nBOR）中的神经元对在对侧视野中沿特定方向缓慢移动的全场刺激反应最佳。在本研究中，我们发现一些nBOR神经元对双眼的全场刺激都有反应。这些双眼神经元在两个视野中都有空间上分离的感受野。一些双眼神经元在两只眼睛中偏好相同方向的全场运动，因此对鸟类平移运动（上升、下降或向前和向后运动）所产生的全场视觉运动反应最佳。其他神经元在每只眼睛中偏好相反方向的全场运动，因此对模拟鸟类旋转运动（翻滚或偏航）的全场视觉运动反应最佳。这些双眼神经元可能通过提供区分平移和旋转运动的视觉信息，在鸽子的运动行为中发挥关键作用。
