Lee T S, Mumford D, Romero R, Lamme V A
Center for the Neural Basis of Cognition, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
Vision Res. 1998 Aug;38(15-16):2429-54. doi: 10.1016/s0042-6989(97)00464-1.
In the classical feed-forward, modular view of visual processing, the primary visual cortex (area V1) is a module that serves to extract local features such as edges and bars. Representation and recognition of objects are thought to be functions of higher extrastriate cortical areas. This paper presents neurophysiological data that show the later part of V1 neurons' responses reflecting higher order perceptual computations related to Ullman's (Cognition 1984; 18:97-159) visual routines and Marr's (Vision NJ: Freeman 1982) full primal sketch, 2 1/2D sketch and 3D model. Based on theoretical reasoning and the experimental evidence, we propose a possible reinterpretation of the functional role of V1. In this framework, because of V1 neurons' precise encoding of orientation and spatial information, higher level perceptual computations and representations that involve high resolution details, fine geometry and spatial precision would necessarily involve V1 and be reflected in the later part of its neurons' activities.
在视觉处理的经典前馈模块化观点中，初级视觉皮层（V1区）是一个模块，用于提取诸如边缘和线条等局部特征。物体的表征和识别被认为是更高层级的纹外皮层区域的功能。本文呈现了神经生理学数据，这些数据表明V1神经元反应的后期部分反映了与乌尔曼（《认知》1984年；18:97 - 159）的视觉程序以及马尔（《视觉》新泽西州：弗里曼1982年）的完整初始草图、2.5维草图和三维模型相关的高阶感知计算。基于理论推理和实验证据，我们提出了对V1功能作用的一种可能的重新解释。在此框架下，由于V1神经元对方向和空间信息的精确编码，涉及高分辨率细节、精细几何形状和空间精度的更高层级感知计算和表征必然会涉及V1，并在其神经元活动的后期部分得到体现。
