Xue J T, Ramoa A S, Carney T, Freeman R D
Neurobiology Group, School of Optometry, University of California, Berkeley 94720.
Exp Brain Res. 1987;68(2):305-10. doi: 10.1007/BF00248796.
We have investigated binocular interaction in the dorsal lateral geniculate nucleus (LGN) of the cat. Neurons were recorded extracellularly during visual stimulation with sinusoidal gratings which were presented at different interocular phases (disparities). The large majority of cells (91%) exhibited some type of binocular interaction. For 75% and 16% of the total number of cells, the binocular interaction was inhibitory or facilitatory, respectively. For the remaining 9% of cells, no interaction was evident. In marked distinction from visual cortex, the facilitatory and inhibitory interactions in the LGN are independent of the relative interocular phase of the patterns. Neurons in the LGN are therefore insensitive to the stereoscopic depth cue, retinal disparity.
我们研究了猫的背外侧膝状核（LGN）中的双眼相互作用。在用正弦光栅进行视觉刺激期间，细胞外记录神经元，正弦光栅以不同的眼间相位（视差）呈现。绝大多数细胞（91%）表现出某种类型的双眼相互作用。在细胞总数中，分别有75%和16%的细胞，其双眼相互作用是抑制性的或易化性的。其余9%的细胞没有明显的相互作用。与视觉皮层明显不同的是，LGN中的易化性和抑制性相互作用与模式的相对眼间相位无关。因此，LGN中的神经元对立体深度线索——视网膜视差不敏感。
