Greene Ernest
Laboratory for Neurometric Research, Department of Psychology, University of Southern California, Los Angeles, California 90089-1061, USA.
Behav Brain Funct. 2007 Mar 14;3:15. doi: 10.1186/1744-9081-3-15.
Minimal discrete shape cues, i.e., dots that marked positions on the outer boundary of namable objects, were divided into two subsets, which were shown very quickly with a variable delay between subsets. Recognition of a given object required integration of the information provided by the two subsets, and previous research had found that recognition declined as the delay between subsets was increased. The present experiment found the decline in recognition to be linear for each of several levels of ambient illumination, dropping rapidly under photopic test conditions, and with the slope being progressively less steep with transition into the scotopic range. The change in the duration of information persistence may be related to the density of information that is provided under various lighting conditions, and a requirement that the information be buffered against noise or "packaged" to accommodate successive saccades.
最小离散形状线索，即标记在可命名物体外边界上位置的点，被分为两个子集，两个子集之间以可变延迟非常快速地呈现。识别给定物体需要整合两个子集提供的信息，先前的研究发现，随着子集之间延迟的增加，识别能力会下降。本实验发现，在几种不同水平的环境光照下，识别能力的下降都是线性的，在明视测试条件下迅速下降，并且随着进入暗视范围，斜率逐渐变缓。信息持续时间的变化可能与在各种光照条件下提供的信息密度有关，以及信息需要缓冲以抵御噪声或“打包”以适应连续扫视的要求。
