Effects of ageing on postreceptoral short-wavelength gain control: Transient tritanopia increases with age

Effects of ageing on postreceptoral short-wavelength gain control: Transient tritanopia increases with age
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衰老对感受器后短波长增益控制的影响:短暂性蓝色盲随着年龄的增长而增加

DOI:
10.1016/j.visres.2010.05.004
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发表时间:
2010
期刊:
影响因子:
1.8
通讯作者:
W. Paulus
W. Paulus
中科院分区:
心理学3区
文献类型:
--
作者:
A. Werner;A. Bayer;G. Schwarz;E. Zrenner;W. Paulus

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我们研究了老化对短波长对手通道中神经增益控制的影响。为了解决具体postreceptoral的变化,我们确定了短暂的三盲,一个矛盾的和短暂的减少后,介绍了一个长波长的适应光短波长的敏感性老化的影响。结果表明,一个意想不到的和显着的增加,短暂的tritanopia随着年龄的增长,这不能解释的短波灵敏度的普遍下降或视网膜照明的选择性减少。相反,我们的数据意味着,老化也影响短波长的增益控制在该网站的色度或超越。因此,老年人适应过程的变化应被视为影响老年人视觉表现的一个重要因素。
We investigated the effect of ageing on the neural gain control in the short-wavelength opponent channel. In order to tackle specifically postreceptoral changes, we determined the effect of ageing on transient tritanopia, a paradoxical and transient reduction of short-wavelength sensitivity after the presentation of a long-wavelength adapting light. The results demonstrate an unexpected and significant increase of transient tritanopia with age, which cannot be explained by a general decline of short-wave sensitivity or the selective reduction of retinal illumination. Instead, our data imply that ageing affects also short-wavelength gain control at the site of chromatic opponency or beyond. Age-related changes of adaptation processes should therefore be considered an important factor influencing the visual performances of the elderly.
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