双训练范式引起知觉学习迁移的心理物理学机制
Alternative TitleThe psychophysical mechanisms underlying the transfer of perceptual learning enabled by double training
Yin-Yu Xie; Rui Wang; Cong Yu
2016
Conference Name2016年第一届北京视觉科学会议
Conference Date2016-07
Conference Place北京
Funding Organization中国科学院心理研究所
Other Abstract

PURPOSE: Although visual perceptual learning is often location specific, learning can transfer to a new location if the new location is additionally trained with an irrelevant task (Xiao et al., 2008). Here we characterized this double training effect on Vernier learning and its transfer at various levels of external noise. 
METHODS: A 2-Gabor Vernier was imbedded in five levels of white noise (rms contrast 0%~29%) and centered in a visual quadrant at 5o eccentricity.
RESULTS: When training was at zero noise, Vernier thresholds were reduced at both zero and high noise at the trained location, but only at high noise at a diagonal quadrant location. However, if orientation discrimination with a Gabor at zero noise was also practiced at the diagonal location, Vernier thresholds at the diagonal location were improved at all noise levels. When training was at high noise, Vernier thresholds were only reduced at high noise at both trained and diagonal locations. Additional orientation training at zero noise, but not at high noise, at a diagonal location reduced Vernier thresholds at lower noise levels at both locations.
CONCLUSIONS: Fitting TvC functions of Vernier learning revealed that: 1) Training at zero noise enhances the sensitivities of perceptual mechanisms, which can transfer to untrained location with double training. 2) Training Vernier at high noise reduces the effect of external noise only, but additional orientation training at zero noise at a different location enhances the sensitivities to Vernier differences at lower noise levels at both locations. These results suggest that training a fine discrimination task enhances the sensitivity of perceptual mechanisms, which appears to be a high-level cognitive process.

Keywordperceptual learning double training psychophysical mechanisms
Subject Area感知觉心理学
URL查看原文
Indexed By其他
Language英语
Document Type会议论文
Identifierhttp://ir.psych.ac.cn/handle/311026/20828
Collection心理所主办、承办、协办学术会议_2016年第一届北京视觉科学会议_会议摘要
AffiliationDepartment of Psychology, IDG/McGovern Institute for Brain Research, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China, 100871
Recommended Citation
GB/T 7714
Yin-Yu Xie,Rui Wang,Cong Yu. 双训练范式引起知觉学习迁移的心理物理学机制[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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