HIGHER ORDER MECHANISMS IN COLOR VISION

这个持续项目的总体目的是了解 视觉加工不同水平的机制对 颜色视觉，对更高层次的机制特别感兴趣， 就是那些超出常规第二阶段机制的机制。一个中环 这项工作的一个方面是协调在 纽约大学的心理物理学和#年的电生理学 与宾夕法尼亚大学彼得·伦尼教授继续合作 罗切斯特。主要目的是：1.研究肤色歧视问题 在更大范围内恒定适应的条件 色度和亮度以及理论上重要的详细信息 地区。2.为了进一步检验光子噪声对 在确定背景增量的可检测性方面的作用。3. 提高对圆锥体相对数量和分布的认识 通过测量受体小单色的色泽外观 借助自适应光学成像的刺激。4.确定 在颜色空间中是否存在沿着其的特权方向 观察者更容易对颜色外观进行抽象。5.继续 与显著相关的协作性电生理实验 色觉方面的问题。6.试图解决两国之间的冲突 基于两种方法估计L锥和M锥的相对灵敏度 一连串的证据。

The overall purpose of this continuing project is to understand the contributions of mechanisms at various levels of visual processing to color vision, with particular interest in higher level mechanisms, that is, those beyond the conventional second stage mechanisms. A central aspect of the work is the coordination of investigations in psychophysics done at New York University and electrophysiology done in a continuing collaboration with Prof. Peter Lennie at the University of Rochester. The main aims are: 1. To study color discrimination under conditions of constant adaptation over an extended range of chromaticities and luminances and in detail over theoretically important regions. 2. To further test the hypothesis that photon noise plays a role in determining the detectability of increments on backgrounds. 3. To advance knowledge about the relative number and distribution of cone receptors by measuring the color appearance of small monochromatic stimuli imaged with the aid of adaptive optics. 4. To determine whether there are privileged directions in color space along which observers more readily abstract color appearance. 5. To continue collaborative electrophysiological experiments relating to significant issues in color vision. 6. To attempt to resolve the conflict between estimates of the relative sensitivity of the L and M cones based on two lines of evidence.