HIGHER ORDER MECHANISMS IN COLOR VISION

这个持续项目的总体目的是了解 视觉加工各层次机制的作用 色觉，特别是在更高层次的机制， 就是超越了传统的第二阶段机制。 中央 工作的一个方面是协调调查， 心理物理学在纽约大学完成，电生理学在 继续与彼得·伦尼教授合作， 罗切斯特。 主要目的是：1.研究颜色辨别能力 不断适应的条件，在一个扩展的范围内， 色度和亮度，并详细介绍了理论上重要的 地区 2. 为了进一步检验光子噪声在 在确定背景上增量的可检测性方面的作用。 3. 提高对锥的相对数和分布的认识 通过测量小单色的颜色外观， 在自适应光学的帮助下成像的刺激。 4. 以确定 在颜色空间中是否存在沿着沿着的优先方向， 观察者更容易抽象颜色的外观。 5. 继续 合作电生理学实验， 色觉的问题。 6. 试图解决 L和M视锥的相对灵敏度的估计基于两个 证据线。

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.