The contribution of color to visual memory in X-chromosome-linked dichromats
The contribution of color to visual memory in X-chromosome-linked dichromats
复制标题
DOI：
10.1016/s0042-6989(97)00200-9
复制
发表时间：
1998-04-01
期刊：
影响因子：
1.8
通讯作者：
Sharpe, LT
中科院分区：
文献类型：
--
作者：
Gegenfurtner, KR;Wichmann, FA;Sharpe, LT
我们使用识别记忆范式来评估x染色体连锁二色者对自然场景彩色图像的视觉记忆。对17种缺乏第二色觉子系统（红绿对手）但保留原始色觉子系统（黄蓝对手）的原色觉和14种保留原始色觉子系统的后色觉与36名颜色正常观察者的色觉表现进行了比较。在演示阶段，48幅自然场景的图像在CRT上显示，持续时间在50到1000毫秒之间。每张图像后面都有一个随机的噪声蒙版。一半的图片是彩色的，一半是黑白的。在随后的查询阶段，同样的48张图像与48张新图像混合在一起，受试者必须指出他们在呈现阶段已经看到了哪些图像。我们发现，随着曝光时间的延长，彩色正常观察者的表现也随之增加。然而，即使在曝光时间短至50毫秒的情况下，彩色图像的表现也比黑白图像好5-10%。令人惊讶的是，二色者的识别性能并没有受到影响，他们对彩色图像的识别性能也比黑白图像好。我们的结论是，当观察复杂的自然场景时，x染色体连锁的二色者可能能够补偿他们减少的色彩信息范围，或者在大多数自然场景中，对于测试的持续时间，幸存的原始色彩子系统充分地表示了色彩信息。1998爱思唯尔科学有限公司版权所有。
We used a recognition memory paradigm to assess the visual memory of X-chromosome-linked dichromats for color images of natural scenes. The performance of 17 protanopes and 14 deuteranopes, who lack the second (red-green opponent) subsystem of color vision, but retain the primordial (yellow-blue opponent) subsystem, was compared with that of 36 color normal observers. During the presentation phase, 48 images of natural scenes were displayed on a CRT for durations between 50 and 1000 msec. Each image was followed by a random noise mask. Half of the images were presented in color and half in black and white. In the subsequent query phase, the same 48 images were intermixed with 48 new images and the subjects had to indicate which of the images they had already seen during the presentation phase. We find that the performance of the color normal observers increases,vith exposure duration. However, they perform 5-10% better for colored than for black and white images, even at exposure durations as short as 50 msec. Surprisingly, performance is not impaired for the dichromats, whose recognition performance is also better for colored than for black and white images. We conclude either that X-chromosome-linked dichromats may be able to compensate for their reduced chromatic information range when viewing complex natural scenes or that the chromatic information in most natural scenes, for the durations tested, is sufficiently represented by the surviving primordial color subsystem. (C) 1998 Elsevier Science Ltd. All rights reserved.