A linear chromatic mechanism drives the pupillary response
A linear chromatic mechanism drives the pupillary response
复制标题
线性色彩机制驱动瞳孔反应
DOI：
10.1098/rspb.2001.1775
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
B. Gilmartin
中科院分区：
文献类型：
--
作者：
S. Tsujimura;J. Wolffsohn;B. Gilmartin
先前的研究表明，色彩机制可以驱动瞳孔反应。本研究的目的是澄清是否是一个线性或非线性的彩色机制驱动瞳孔反应，通过使用测试刺激的各种颜色，定义在锥对比度空间。这些测试刺激引起的瞳孔和调节反应连续，同时客观测量摄影验光。等色和等亮度刺激的结果表明，即使同时瞳孔反应很大（约0.25 D），屈光水平也保持近似恒定（平均水平变化< 0.25 D）。0.30 mm）。瞳孔对等亮度光栅的反应持续，延迟（约。60 ms）和更大的幅度比一个等色均匀的刺激，这支持了以前的工作表明，彩色机制有助于瞳孔反应。在第二个实验中，使用选定的色度测试光栅，并在锥对比度空间中获得等响应轮廓。结果表明，等反应曲线在锥衬空间中可用一条斜率为正的直线来描述（r2 = 0.99）。结果表明，|L - M|线性色度机制驱动瞳孔响应，其中来自长波长锥的信号从中波长锥的信号中减去，反之亦然。
Previous studies have shown that a chromatic mechanism can drive pupil responses. The aim of this research was to clarify whether a linear or nonlinear chromatic mechanism drives pupillary responses by using test stimuli of various colours that are defined in cone contrast space. The pupil and accommodation responses evoked by these test stimuli were continuously and simultaneously objectively measured by photorefraction. The results with isochromatic and isoluminant stimuli showed that the accommodative level remained approximately constant (< 0.25 D change in mean level) even when the concurrent pupillary response was large (ca. 0.30 mm). The pupillary response to an isoluminant grating was sustained, delayed (by ca. 60 ms) and larger in amplitude than that for a isochromatic uniform stimulus, which supports previous work suggesting that the chromatic mechanism contributes to the pupillary response. In a second experiment, selected chromatic test gratings were used and isoresponse contours in cone contrast space were obtained. The results showed that the isoresponse contour in cone contrast space is well described (r2 = 0.99) by a straight line with a positive slope. The results indicate that a |L – M| linear chromatic mechanism, whereby a signal from the long wavelength cone is subtracted from that of the middle wavelength cone and vice versa, drives pupillary responses.
DOI：
10.1364/josaa.10.001304
发表时间：
1993
期刊：
Journal of the Optical Society of America. A, Optics and image science
影响因子：
--
作者：
Pokorny,J;Jin,Q;Smith,VC
通讯作者：
Smith,VC
影响因子：
5.5
作者：
DERRINGTON, AM;KRAUSKOPF, J;LENNIE, P
通讯作者：
LENNIE, P
DOI：
10.1364/josaa.8.002048
发表时间：
1991
期刊：
Journal of the Optical Society of America. A, Optics and image science
影响因子：
--
作者：
Young,RS;Teller,DY
通讯作者：
Teller,DY