Short-term monocular pattern deprivation reduces the internal additive noise of the visual system

Frontiers in Neuroscience

Neuroscience

Jiayu Tao¹  Zeng Wang²  Jinwei Li³  Linghe Li³  Pan Zhang³  Zhenhui Cheng³  Jing Li³  Lijun Chen⁴  Di Wu⁵ 

[1] Department of Psychology, Chengde Medical University, Chengde, China;Department of Psychology, Hebei Medical University, Shijiazhuang, China;Department of Psychology, Hebei Normal University, Shijiazhuang, China;Department of Psychology, Shandong Normal University, Jinan, China;Military Medical Psychology School, Air Force Medical University, Xi’an, China;

关键词: monocular pattern deprivation;    contrast sensitivity;    external noise;    perceptual template model;    spatial frequency;    internal additive noise;   

DOI  :  10.3389/fnins.2023.1155034

 received in 2023-01-31, accepted in 2023-07-13,  发布年份 2023

来源: Frontiers

【 摘 要 】

Previous studies have shown that short-term monocular pattern deprivation can shift perceptual dominance in favor of the deprived eye. However, little is known about the effect of monocular pattern deprivation on contrast sensitivity (CS) and its corresponding mechanisms. Here, contrast sensitivity function (CSF) in the nondominant eye of normal subjects was evaluated before and after 150 min of monocular pattern deprivation. To obtain a CSF with high precision and efficiency before deprivation effect washout, a quick CSF (qCSF) method was used to assess CS over a wide range of spatial frequencies and at two external noise levels. We found that (1) monocular pattern deprivation effectively improved the CS of the deprived eye with larger effect on high spatial frequencies, (2) CS improvement only occurred when external noise was absent and its amount was spatial frequency dependent, and (3) a perceptual template model (PTM) revealed that decreased internal additive noise accounted for the mechanism of the monocular pattern derivation effect. These findings help us better understand the features of short-term monocular pattern deprivation and shed light on the treatment of amblyopia.

【 授权许可】

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Copyright © 2023 Li, Cheng, Li, Li, Chen, Tao, Wang, Wu and Zhang.