The temporal characteristics of the early and late stages of L- and M-cone pathways that signal brightness.
The temporal characteristics of the early and late stages of L- and M-cone pathways that signal brightness.
复制标题
表示亮度信号的 L 和 M 视锥细胞通路早期和晚期的时间特征。
DOI:
10.1167/13.7.15
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发表时间:
2013
影响因子:
1.8
通讯作者:
Petrova D
中科院分区:
文献类型:
--
作者:
Petrova D
Abstract:Abstract Flickering 560-nm light appears brighter and less saturated than steady light of the same average intensity. The changes in appearance are consistent with the visual signal's being distorted at some nonlinear site (or sites) within the visual pathway at which new temporal components, not part of the original waveform, are produced. By varying the input stimulus to manipulate these new temporal components—called distortion products—and measuring our observers' sensitivity in detecting them, we derived the temporal attenuation characteristics of the early (prenonlinearity) and late (post-nonlinearity) stages of the L-and M-cone pathway that signals brightness. We found that the early stage acts like a band-pass filter peaking at 10–15 Hz with sensitivity losses at both lower and higher frequencies, whereas the late stage acts like a two-stage low-pass filter with a corner frequency near 3 Hz. Although brightness is often associated with the fast achromatic or luminance pathway, these filter characteristics, and particularly those of the late filter, are consistent with comparable features of the LM chromatic pathway that produce mainly chromatic distortion products (Petrova, Henning, & Stockman, 2013). A plausible site for the nonlinearity is after surround antagonism from horizontal cells. Modeling suggested the form of the nonlinearity to be initially expansive but possibly with a hard limit at the highest input levels.
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影响因子:
5.2
作者:
D. Reits
通讯作者:
D. Reits
影响因子:
15.9
作者:
P. Lennie
通讯作者:
P. Lennie
DOI:
--
发表时间:
1952
期刊:
影响因子:
--
作者:
S. H. Bartley
通讯作者:
S. H. Bartley
影响因子:
1.8
作者:
D. G. Green
通讯作者:
D. G. Green
DOI:
--
发表时间:
1951
期刊:
影响因子:
--
作者:
S. H. Bartley
通讯作者:
S. H. Bartley