The effect of aging on the orientational selectivity of the human visual system

被引：42

作者：

Govenlock, Stanley W. ^{[1
]}

Taylor, Christopher P. ^{[1
]}

Sekuler, Allison B. ^{[1
,2
]}

Bennett, Patrick J. ^{[1
,2
]}

机构：

[1] McMaster Univ, Dept Psychol Neurosci & Behav, Hamilton, ON L8S 4K1, Canada

[2] York Univ, Ctr Vis Res, Toronto, ON M3J 2R7, Canada

来源：

VISION RESEARCH | 2009年 / 49卷 / 01期

基金：

加拿大健康研究院; 加拿大自然科学与工程研究理事会;

关键词：

Aging; Orientation; Channels; Masking; Cortex; Psychophysics; MASKING EXPERIMENTS; CORTICAL-CELLS; MECHANISMS; VISION; DEGRADATION; MEMORY; NONLINEARITY; CORTEX; COLOR; V1;

D O I：

10.1016/j.visres.2008.10.004

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Leventhal et al. (Science, 2003, 300(5620), 812-815) reported that orientation selectivity of V1 neurons was significantly reduced in older macaque monkeys, which suggests that mechanisms that encode orientation in humans may become more broadly tuned in old age. We examined this hypothesis in two experiments that used sine-wave masking and notched-noise masking to estimate the bandwidth of orientation-selective mechanisms in younger (age P 23 years) and older (age approximate to 68 years) human adults. In both experiments, the orientation selectivity of masking was essentially identical in younger and older subjects. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：164 / 172

页数：9

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