ArticleScientific reports2020
Aging affects gain and internal noise in the visual system.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Visual Perception and Gamma Oscillations in Cat V1 are Dynamically Correlated in Contrast Sensitivity Functions.Neuroscience bulletin · 2026Article
- Article
- Individual differences reveal distinct age-related reorganizations in spatial channels for luminance and texture processing.npj aging · 2026Article
- Self images: an empirical enquiry into Rembrandt's self-portraits.Frontiers in psychiatry · 2026Article
- Contrast Sensitivity Predicts 30-month Functional Brain Network Integrity in Cognitively Unimpaired Older Adults: the Brain Networks and Mobility Study.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025Article
- The temporal window of visual processing throughout adulthood.Frontiers in neuroscience · 2025Article
- Behavioural stochastic resonance across the lifespan.Cognitive, affective & behavioral neuroscience · 2024Article
- Short-term monocular pattern deprivation reduces the internal additive noise of the visual system.Frontiers in neuroscience · 2023Article
- Acute Alcohol Intake Affects Internal Additive Noise and the Perceptual Template in Visual Perception.Frontiers in neuroscience · 2022Article
- Aging Alters Daily and Regional Calretinin Neuronal Expression in the Rat Non-image Forming Visual Thalamus.Frontiers in aging neuroscience · 2021Article
- Aging effects on contrast sensitivity in visual pathways: A pilot study on flicker adaptation.PloS one · 2021Article
- Lower Internal Additive Noise and Better Perceptual Template Characterize Binocular Contrast Sensitivity Summation.Frontiers in psychology · 2021Article
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Visual functions decline with age, but how aging degrades visual functions remains controversial. In the current study, the mechanisms underlying age-related visual declines were examined psychophysically. We developed an efficient method to quickly explore contrast sensitivity as a function of nine spatial frequencies at three levels of external noise in both young and old subjects. Fifty-two young and twenty-six old subjects have been screened for ophthalmological and mental diseases and participated in the experiment. Contrast sensitivity varied significantly with spatial frequency, age, and level of external noise. By adopting a nonlinear observer model, we decomposed contrast sensitivity into inefficiencies in internal additive noise, internal multiplicative noise, perceptual template gain, and/or system non-linearity. Model analysis revealed that aging impacts both internal additive noise and perceptual template gain, and such age-related degradation is tuned to spatial frequency, which is also a good predictor to discriminate old from young. The quick characterization of contrast sensitivity functions at different noise levels and the accompanying analysis developed in the current study may have profound application in other clinical populations.
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