Lazareva N A, Saltykov K A, Shevelev I A, Tikhomirov A S, Novikova R V, Tsutskiridze D Yu
Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.
Neurosci Behav Physiol. 2007 Jul;37(6):613-21. doi: 10.1007/s11055-007-0060-1.
Acute experiments on 27 adult anesthetized and immobilized cats investigated 101 on and off receptive fields in 67 neurons in visual cortex field 17 by mapping using single local stimuli presented sequentially at different parts of the visual field, as well as in combination with additional stimulation of the center of the receptive field. Both classical and combined mapping identified receptive fields with single receptive zones (63.4% and 29.3% respectively), along with fields consisting of several (2-5) excitatory and/or inhibitory zones (36.6% and 70.7%). We provide the first report of receptive fields with horseshoe, cross, and T shapes. Simulations of horizontal interneuronal interactions in the visual cortex responsible for the multiplicity of excitatory and inhibitory zones of receptive fields were performed. A role for cooperative interactions of neurons in this effect was demonstrated. The possible functional role of receptive fields of different types in extracting the features of visual images is discussed.
对27只成年麻醉并固定的猫进行急性实验，通过在视野不同部位依次呈现单个局部刺激，并结合对感受野中心的额外刺激，对视觉皮层17区的67个神经元中的101个开-关感受野进行映射研究。经典映射和联合映射均识别出具有单个感受区的感受野（分别为63.4%和29.3%），以及由几个（2 - 5个）兴奋和/或抑制区组成的感受野（分别为36.6%和70.7%）。我们首次报告了马蹄形、十字形和T形的感受野。对负责感受野兴奋和抑制区多样性的视觉皮层水平神经元间相互作用进行了模拟。证明了神经元的协同相互作用在这种效应中的作用。讨论了不同类型感受野在提取视觉图像特征方面可能的功能作用。
