Processing of color signals in female carriers of color vision deficiency.

Processing of color signals in female carriers of color vision deficiency.
复制标题

色觉缺陷女性携带者颜色信号的处理。

DOI:
10.1167/12.2.11
复制
发表时间:
2012
期刊:
影响因子:
1.8
通讯作者:
Konstantakopoulou E
Konstantakopoulou E
中科院分区:
医学4区
文献类型:
--
作者:
Konstantakopoulou E

文献摘要

参考文献

被引文献

相似文献

本研究的目的是评估色觉缺陷携带者的色敏感性,特别是与视网膜照度依赖性相关的色敏感性,并将这些发现与在正常三色男性中测量的相应红绿(RG)阈值进行参考。 36 名先天性 RG 颜色缺陷携带者和 26 名正常三色男性参与了这项研究。通过测量瞳孔直径以及晶状体和黄斑色素的光密度来估计视网膜照度。使用颜色评估和诊断 (CAD) 测试、Ishihara 和 American Optical 伪等色板以及 Nagel 色差镜检查每个受试者的色觉。绿色盲 (D) 和绿色弱视 (DA) 携带者的 RG 阈值高于男性三色视者 (p < 0.05)。当参考男性三色视者时,红色异常 (PA) 携带者需要减少 28% 的颜色信号强度; D 的载流子在中间光水平下需要 60% 高的阈值。 L:M 比率的变化以及因此绝对 M 锥体密度的变化可能是低明视范围内 D 载流子色敏度较差的主要因素。 PA 载体在较低光照水平下的敏感性增加与来自混合 M' 和 M 视锥细胞的信号汇集以及随后对视杆细胞的更强抑制一致。研究结果表明,来自混合感光颜料的信号可能会优先与光谱上最接近的“正常”颜料汇集。
The aim of this study was to assess the chromatic sensitivity of carriers of color deficiency, specifically in relation to dependence on retinal illuminance, and to reference these findings to the corresponding red–green (RG) thresholds measured in normal trichromatic males. Thirty-six carriers of congenital RG color deficiency and 26 normal trichromatic males participated in the study. The retinal illuminance was estimated by measuring the pupil diameter and the optical density of the lens and the macular pigment. Each subject's color vision was examined using the Color Assessment and Diagnosis (CAD) test, the Ishihara and American Optical pseudoisochromatic plates, and the Nagel anomaloscope. Carriers of deuteranopia (D) and deuteranomaly (DA) had higher RG thresholds than male trichromats (p< 0.05). When referenced to male trichromats, carriers of protanomaly (PA) needed 28% less color signal strength; carriers of D required∼ 60% higher thresholds at mesopic light levels. Variation in the L: M ratio and hence the absolute M-cone density may be the principal factor underlying the poorer chromatic sensitivity of D carriers in the low photopic range. The increased sensitivity of PA carriers at lower light levels is consistent with the pooling of signals from the hybrid M′ and the M cones and the subsequent stronger inhibition of the rods. The findings suggest that signals from hybrid photopigments may pool preferentially with the spectrally closest “normal” pigments.
视锥细胞选择性源自视网膜视锥细胞马赛克对自然场景的反应。
DOI: --
发表时间: 2007
期刊: Journal of Vision
影响因子: 1.8
作者:
T. Wachtler;E. Doi;Te;T. Sejnowski
通讯作者: T. Sejnowski
DOI: --
发表时间: 1949
期刊: Nature
影响因子: 64.8
作者:
R. Pickford
通讯作者: R. Pickford
DOI: --
发表时间: 1947
期刊: Nature
影响因子: 64.8
作者:
R. Pickford
通讯作者: R. Pickford
DOI: 10.1016/0042-6989(89)90129-6
发表时间: 1989-01-01
期刊: VISION RESEARCH
影响因子: 1.8
作者:
COHN, SA;EMMERICH, DS;CARLSON, EA
通讯作者: CARLSON, EA
DOI: 10.1016/s0042-6989(97)00108-9
发表时间: 1997-10-01
期刊: VISION RESEARCH
影响因子: 1.8
作者:
Lee, BB;Smith, VC;Kremers, J
通讯作者: Kremers, J