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Effects of aging on low luminance contrast processing in humans

Emmanuelle Bellot, Véronique Coizet, Jan Warnking, Kenneth Knoblauch, Elena Moro, Michel Dojat
2016 NeuroImage  
Short running title: Aged-related changes in superior colliculus luminance contrast processing 2 Abstract Luminance contrast is a fundamental visual cue.  ...  Taken together, fMRI and psychophysics results indicate an alteration of luminance contrast processing with normal aging.  ...  The authors thank Chantal Delon-Martin for help with physiological data analysis and Irène Troprès for assistance in MR sequence development.  ... 
doi:10.1016/j.neuroimage.2016.06.051 pmid:27374727 fatcat:qnqssvjv6vhm3prpwqwtzwxbda

Aging effects on contrast sensitivity in visual pathways: A pilot study on flicker adaptation

Xiaohua Zhuang, Tam Tran, Doris Jin, Riya Philip, Chaorong Wu, David Keisuke Sewell
2021 PLoS ONE  
The current study investigates the influence of aging on contrast sensitivity and on the desensitization effect in the two visual pathways.  ...  In addition, a similar desensitization effect from flicker adaptation was observed in the MC pathway for all ages, which suggests that aging may not affect the process of visual adaptation to rapid luminance  ...  Introduction Contrast sensitivity is one of the most fundamental functions of the human visual system.  ... 
doi:10.1371/journal.pone.0261927 pmid:34972163 pmcid:PMC8719693 fatcat:mas3x76zcrchveuyzxndqw7ahq

Differential effects of aging on spatial contrast sensitivity to linear and polar sine-wave gratings

T.L. Costa, R.M.T.B.L. Nogueira, A.G.F. Pereira, N.A. Santos
2013 Brazilian Journal of Medical and Biological Research  
We suggest that neural changes in the aging brain are important determinants of this difference and discuss the results according to current models of human aging.  ...  Changes in visual function beyond high-contrast acuity are known to take place during normal aging.  ...  Therefore, an analysis of these contrasting results and the frequency-specific effect of aging on contrast sensitivity ( Figure 2 ) might show that human aging distinctively affects luminance contrast  ... 
doi:10.1590/1414-431x20133117 pmid:24141613 pmcid:PMC3854312 fatcat:mibb557a4bfw5hioavvmuy4wzy

Age-related Changes of Reaction Time and p300 for Low-contrast Color Stimuli: Effects of Yellowing of the Aging Human Lens

Taka-aki Suzuki, Yi Qiang, Satoshi Sakuragawa, Hisae Tamura, Katsunori Okajima
2006 Journal of Physiological Anthropology  
qualitatively as well as visibility of the elderly because both the simulated filter and the aging human lens modify the effective luminance, effective luminance contrast and effective color difference  ...  We also found that the reciprocal of RT and P300 latency could be expressed in a multiple regression model consisting of effective luminance, effective luminance contrast, effective color difference and  ...  This delay may occur Age-related Changes of Reaction Time and p300 for Low-contrast Color Stimuli: Effects of Yellowing of the Aging Human Lens Taka-aki Suzuki 1),2) , Yi Qiang 1) , Satoshi Sakuragawa  ... 
doi:10.2114/jpa2.25.179 pmid:16679715 fatcat:ljnmb3u2cjawdabajd2szg35oy

Visual Contextual Effects of Orientation, Contrast, Flicker, and Luminance: All Are Affected by Normal Aging

Bao N. Nguyen, Allison M. McKendrick
2016 Frontiers in Aging Neuroscience  
The increase in suppression was consistent in magnitude across all tasks, suggesting that normal aging produces a generalized, non-specific alteration to contextual processing in vision.  ...  Here, we compare the perception of older and younger observers on a battery of tasks designed to assess such visual contextual effects.  ...  Our results are in agreement with two previous reports of greater age-related surround suppressive effects for luminance stimuli (McCarter and Atkeson, 1977) and low contrast center stimuli (Karas and  ... 
doi:10.3389/fnagi.2016.00079 pmid:27148047 pmcid:PMC4834301 fatcat:5ounydmhqrg7rnztbmrhl4uj6y

Vision for Motor Performance in Virtual Environments Across the Lifespan [chapter]

Patrick Grabowski, Andrea Maso
2012 Virtual Reality and Environments  
The results of this study showed only a minimal effect of luminance contrast on the formation of grasp aperture.  ...  Given that the processing of luminance contrast information is linked in multiple ways with speed of processing, and speed of processing is a central theme in aging related functional decline, this visual  ... 
doi:10.5772/37341 fatcat:vv2cj5ecaje7hjgjv3vp3qqjnm

Assessing spatial perception in aging using an adapted Landolt-C technique

Armando Bertone, Jacalyn Guy, Jocelyn Faubert
2011 NeuroReport  
Results suggest that age-related changes in visual function can be dissociated at different levels of processing, and may be better defined using stimuli that necessarily depend on higher levels of neural  ...  This study investigated luminance and texture-defined spatial information processing in normal aging using an adapted Landolt-C technique.  ...  Acknowledgements Conflicts of interest There are no conflicts of interest.  ... 
doi:10.1097/wnr.0b013e32834d2f49 pmid:22045257 fatcat:vnkdznzwljfexd5qu3y3emc2ba

Corrigendum to: Swept-sine noise-induced damage as a hearing loss model for preclinical assays

Lorena Sanz, Silvia Murillo-Cuesta, Pedro Cobo, Rafael Cediel, Julio Contreras, Teresa Rivera, Isabel Varela-Nieto, Carlos Avendaño
2015 Frontiers in Aging Neuroscience  
The increase in suppression was consistent in magnitude across all tasks, suggesting that normal aging produces a generalized, non-specific alteration to contextual processing in vision.  ...  Here, we compare the perception of older and younger observers on a battery of tasks designed to assess such visual contextual effects.  ...  Our results are in agreement with two previous reports of greater age-related surround suppressive effects for luminance stimuli (McCarter and Atkeson, 1977) and low contrast center stimuli (Karas and  ... 
doi:10.3389/fnagi.2015.00079 pmid:26029100 pmcid:PMC4428203 fatcat:iyynh2zw2rffnl2d2ixufbox7a

Species-specific effects of pigmentation negation on the neural response to faces

Benjamin Balas, Kate Stevenson
2013 Neuropsychologia  
Presently, we asked whether or not the well-known effect of contrast-negation on face recognition (Galper, 1970) was exclusive to human faces or generalized to monkey faces.  ...  Our results however, indicate that behaviorally, luminance and chroma negation affect discrimination performance in a species-independent manner, while similar effects of contrast-negation effects are  ...  Our thanks to Mike Mangini for helpful discussions of the data and an anonymous reviewer for many helpful comments on previous drafts of the manuscript.  ... 
doi:10.1016/j.neuropsychologia.2013.05.022 pmid:23792327 pmcid:PMC3747782 fatcat:kwjnsvi3ererzeqnnop3665gka

Global shape discrimination at reduced contrast in enucleated observers

Jennifer K.E Steeves, Frances Wilkinson, Esther G González, Hugh R Wilson, Martin J Steinbach
2004 Vision Research  
We asked whether unilateral enucleation specifically enhances all levels of luminance processing.  ...  The previously reported enhanced sensitivity to luminance-defined form in early enucleated observers also occurs for low-contrast global shape discrimination.  ...  If enucleation specifically improves luminance processing in form vision and low luminance contrast form processing develops earlier than high luminance contrast form processing, we predict that early  ... 
doi:10.1016/j.visres.2003.11.015 pmid:14992838 fatcat:2fr6ipir3janbkmr2vt5o2xpm4

Subject index

1998 Vision Research  
LOW VISION Image enhancement improves reading performance in age-related macular degeneration patients 38:153 peripheral vision 38:2949 LUMINANCE Effects of mean luminance on goldfish temporal  ...  perception deficits from midline cerebellar lesions in human 38:2219 High and low luminance letters, acuity reserve, and font effects on reading speed 38:2527 OKN, perceptual and VEP direction biases  ... 
doi:10.1016/s0042-6989(99)80004-2 fatcat:4sorb7gyobempbham6yzgklsza

Perceptual biases are inconsistent with Bayesian encoding of speed in the human visual system

O. Hassan, S. T. Hammett
2015 Journal of Vision  
We measured the perceived speed of low contrast patterns at both low (2.5 cd m À2 ) and high (25 cd m À2 ) luminance in order to assess these competing models of how the human visual system encodes speed  ...  We conclude that Bayesian processes cannot adequately account for speed encoding in the human visual system.  ...  Introduction Whereas knowledge of the speed of objects in the environment is of critical importance, there is still no consensus on the nature of the processes that underlie the encoding of speed in the  ... 
doi:10.1167/15.2.9 pmid:25761348 fatcat:ytszfodnwfdezghxj2kjoit3fi

Subject index

2005 Vision Research  
of the human eye in the near retinal periphery, 1115 Dynamic aspects of accommodation: age and presbyopia, 591 Effect of positive and negative defocus on contrast sensitivity in myopes and non-myopes,  ...  of visual acuity by spatial cueing: a comparative study in human and non-human primates, 1589 Local and non-local deficits in amblyopia: acuity and spatial interactions, 3099 Low contrast vision function  ...  rotation in humans, 613LOW VISIONLetter-recognition and reading speed in peripheral vision benefit from perceptual learning, 695 Low contrast vision function predicts subsequent acuity loss in an aged  ... 
doi:10.1016/j.visres.2005.01.001 fatcat:vr2aqqyx5zgdnmghzkxztdqbga

Flicker adaptation desensitizes the magnocellular but not the parvocellular pathway

X. Zhuang, D. Cao, J. Pokorny
2014 Journal of Vision  
Three observers (one male, aged 43 years, and two females, aged 33 and 62 years) adapted to either a steadily presented pedestal or a 2-or 10-Hz 50% contrast square-wave modulated luminance flicker.  ...  This study demonstrates the feasibility of independently manipulating sensitivity of the MC-pathway in human observers.  ...  METHODS Observers Three observers participated in the experiment (one male, aged 43 years, and two females, aged 33 and 62 years; two authors and one naïve observer).  ... 
doi:10.1167/14.10.791 fatcat:xcmg5h7isjd4hlnhv3vlfsxciq

Early ERPs to faces: aging, luminance, and individual differences

Magdalena M. Bieniek, Luisa S. Frei, Guillaume A. Rousselet
2013 Frontiers in Psychology  
Furthermore, luminance modulated the entire ERP time-course from 60 to 500 ms. Luminance effects peaked in the N170 time window and were independent of age.  ...  In both experiments, subjects were tested twice. We found a 1 ms/year slowdown in visual processing that was independent of luminance.  ...  Lesley Mackay and Christina Xanthi Moustaka were supported by a summer scholarship from the University of Glasgow Settlement charity.  ... 
doi:10.3389/fpsyg.2013.00268 pmid:23717297 pmcid:PMC3653118 fatcat:pukkj2i4xfbd7dk3tubplmncpu
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