人类暗适应视网膜中的空间和时间总和。

Spatial and temporal summation in the human dark-adapted retina.

作者信息

Zuidema P, Verschuure H, Bouman M A, Koenderink J J

出版信息

J Opt Soc Am. 1981 Dec;71(12):1472-80. doi: 10.1364/josa.71.001472.

DOI:10.1364/josa.71.001472

PMID:7320780

Abstract

A coherent set of absolute-threshold data is presented for circular flashes with a diameter of 5-343 min of arc, a flash duration of 32-1000 msec, and at eccentricities between 7 and 50 deg in the temporal retina. A reduction in the flash interval from 4 to 1 sec causes a threshold elevation for eccentricities exceeding 15 deg for all other stimulus parameters. It is shown that local adaptation affects the measurements significantly, especially when long-lasting stimuli and large eccentricities exist. The results can be described with the help of a quanta-coincidence model if adaptational properties are included.

摘要

本文给出了一系列连贯的绝对阈值数据，这些数据针对直径为5 - 343分弧度的圆形闪光、闪光持续时间为32 - 1000毫秒，以及在颞侧视网膜中7至50度的偏心率情况。对于所有其他刺激参数，将闪光间隔从4秒缩短至1秒会导致偏心率超过15度时阈值升高。结果表明，局部适应对测量有显著影响，特别是当存在持久刺激和大偏心率时。如果考虑适应特性，这些结果可以借助量子巧合模型来描述。