Perceptual Learning Based on Common Low-Level Representation among Older Adults
Rui Ni; Mikki Phan
2016
会议名称2016年第一届北京视觉科学会议
会议日期2016-07
会议地点北京
摘要

PURPOSE: Given the well documented age-related declines in contrast sensitivity (CS) and that CS is a contributing factor to age-related increases in driving accident risk, the current study aims to answer an important question that whether one can at least partially reverse age-related CS deficits for older adults through perceptual learning (PL) training.
METHODS: A total of 32 older adults (Mean age = 77.86, SD = 9.41) were randomly assigned to two training group, either being training with a contrast discrimination (CD) task or being trained with an orientation discrimination task (ORD). Participants were measured on their CS and ORD performance before and after two days’ PL training.
RESULTS: Participants in both groups showed significant improvements on their training tasks for the trained eye. More importantly, signi?cant transfer e?ects across tasks were found for both groups (e.g. from ORD to CD, and from CD to ORD), but not for an active control group in which participants received training on multiple object tracking. Signi?cant transfer was also found for untrained eyes, but not for untrained orientations.
CONCLUSIONS: These results showed that older individuals could improve their CS through training. Such improvements were obtained even in untrained eyes and tasks as long as the training displays were similar to the test displays. Thus, given the orientation-speci?city found in this study, the results support the idea that PL of CD and ORD results from a low level in the visual pathway (i.e., V1), in which both tasks share the same mechanism at that representational level.

会议主办者中国科学院心理研究所
关键词perceptual learning transfer aging contrast sensitivity
学科领域感知觉心理学
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语种英语
文献类型会议论文
条目标识符http://ir.psych.ac.cn/handle/311026/20860
专题心理所主办学术会议_2016年第一届北京视觉科学会议_会议摘要
作者单位Departments of Psychology, Wichita State University, Wichita, KS, United States of America, 67260
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Rui Ni,Mikki Phan. Perceptual Learning Based on Common Low-Level Representation among Older Adults[C]. 见:2016年第一届北京视觉科学会议. 北京. 2016-07.http://vision.csp.escience.cn/dct/page/1.
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