NEURAL CODING OF VISUAL STIMULI

我们记录了初级视觉皮层单个神经元的活动， 视觉处理的第一皮层阶段和下颞叶 皮层，最后的皮层阶段，研究视觉的机制 perception. 当神经元被分析为携带 在他们的反应中，所看到的反应模式只能是 表示为几个（3-6）同时的、独立的模式的总和 的活动。 这些活动模式被分析为时间代码， 发现此代码包含的信息比 反应强度，神经元反应的通常测量。 比例 随着时间代码中携带的信息量的稳步增加， 从边缘逐渐向中心发展 视觉系统的稳定性。 颞下记录的神经元 当猴子执行简单的视觉记忆任务时， 样品，携带区分样品的物理尺寸的信息， 刺激及其意义，即，他们是否每一个都是样本， 匹配或不匹配的刺激。 神经元对的每一个成员 同时记录从一个单一的电极在这两个主要和 下颞叶皮层独立于其他成员，即，他们的 信息补充。 这表明，本地处理是由 结合对所观察刺激的独立神经元分析。

We recorded the activity of single neurons in the primary visual cortex, the first cortical stage of visual processing, and inferior temporal cortex, the last cortical stage, to study the mechanisms underlying visual perception. When neurons were analyzed as communication channels carrying information in their responses, the response patterns seen could only be represented as the sum of several (3-6) simultaneous, independent patterns of activity. These activity patterns were analyzed as temporal code, and this code was found to contain more information than that conveyed by the response strength, the usual measure of neuronal response. The proportion of information carried in the temporal code increases steadily as one proceeds from the periphery through progressively more and more central statious of the visual system. Neurons recorded from inferior temporal cortex while monkeys perform a simple visual memory task, matching-to- sample, carry information differentiating the physical dimensions of the stimuli as well as their meaning, i.e., their whether each is the sample, the matching, or the nonmatching stimulus. Each member of a neuronal pair recorded simultaneously from a single electrode in both primary and inferior temporal cortex is independent of the other member, i.e., their information adds. This suggests that local processing is carried out by combining independent neuronal analyses of the stimulus being viewed.