HIGHER ORDER MECHANISMS IN COLOR VISION

这项建议的主要目标是理解 更高阶的颜色机制。更高阶的机制是指 视觉加工链中第二阶段以外的元素 大多数传统视觉模型的机制。这类生物的存在 通过对选材的详细分析，提出了选材的机理 由于观看调制的场而导致的减敏，以及 脉象变化的辨别与检测的关系 颜色。 不同颜色空间条件下的颜色辨别变化实验 不断适应的条件将继续和延长。这些 实验应该导致描述颜色的新标准 日常生活中的歧视。 控制可探测性和可测性因素的理论分析 提出了一种简洁、小的单色灯的出现。结果是 这一分析应该有助于产生对以下物质分布的估计 不同种类的视锥细胞受体。 对颜色在运动检测中的作用进行了实验。 这些实验应该有助于确定信号所处的阶段 从独立的、第二阶段的机制相互作用。 计划进行关于颜色对判断能力的影响的实验 线条的批判性。这些实验应该提供关于 色度机制处理空间信息的能力。 记录响应于色度和色度而产生的磁场 将生成亮度脉冲。这些实验的目的是要看到 这种方法是否会提供证据支持这样的理论 有关刺激的色差和非色差方面的信息如下 通过不同的神经系统传递。 在单个神经元特性研究中的持续合作 猴子I号，视觉系统是有计划的。被证明是卓有成效的方法 在表征！单位的侧膝状将被应用 至V1、V2和V4的皮质系统。

The major goal of this proposal is the understanding of the nature of higher order color mechanisms. By higher order mechanisms are meant elements in the chain of visual lprocessing beyond the second stage mechanisms of most conventional models of vision. The existence of such mechanisms has been suggested by the detailed analysis of the selective desensitization resulting from the viewing of modulated fields, and by the relation between the discrimination and detection of pulse changes in color. Experiments on the variation in color discrimination over color space under condiitions of constant adaptation will be continued and extended. These experiments should lead to new standards with which to describe color discrimination in everyday life. Theoretical analysis of the factors that control the detectability and appearance of brief, small monochromatic lights is proposed. The results of this analysis should help in generating estimates of the distribution of the different classes of cone receptors. Experiments are proposed on the role of color in the detection of motion. These experiments should help in determining the stage at which signals from the separate ,second stage mechanisms interact. Experiments are planned on the influence of color on the ability to judge the crientation of lines. These experiments should provide information on the ability of chromatic mechanisms to process spatial information. Recording of the magnetic fields generated in response to chromatic and luminance Ipulses will be made. The goal of these experiments is to see whether this method will provide evidence to support the theory that information about the chromatic and achromatic aspects of stimuli are transmitted through separate neural systems. Continued collaboration in studies of the properties of single neurons in the monkey i,visual system is planned. Methods which have proved fruitful in the characterization of !units in the lateral geniculate will be applied to cortical systems in Vl, V2, and V4.