知觉学习朝向特异性的可能机制——未训练朝向刺激不足
其他题名Under-stimulation at untrained orientation may explain orientation speci?city in perceptual learning
Ying-Zi Xiong; Jun-Yun Zhang; Cong Yu
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
会议主办者中国科学院心理研究所
其他摘要PURPOSE: Perceptual learning (PL) can transfer completely to an orthogonal orientation if the latter is exposed through an irrelevant task (Zhang et al., 2010). PL thus is more likely rule-based cognitive learning. However, it is unclear why PL is orientation specific in the first place and why exposure to the transfer orientation enables learning transfer. Here we used a continuous ?ashing suppression (CFS) paradigm to answer these questions.
METHODS: Foveal orientation discrimination was always trained at one orientation. In other blocks of trials ?ashing white noise was presented to one eye, which suppressed the awareness of an orthogonal Gabor (sometimes a letter C) presented to the other eye.
RESULTS: In bottom-up orientation exposure condition, observers reported the color of a dot centered on the noise in the dominant eye, without knowing the presence of the subconscious orthogonal Gabor in the non-dominant eye. This bottom-up exposure produced partial transfer. In a top-down “exposure” condition, observers were required to report, or guess is they had to, whether an orthogonal Gabor/letter-C was presented to the non-dominant eye even though it was suppressed by the ?ashing noise in the dominant eye. However, during actual experiment neither the Gabor nor the letter C was presented. This top-down "exposure" also induced partial transfer. In a third condition, when observers performed the Gabor/C task and the orthogonal Gabor was actually present, this combined bottom-up and top-down exposure induced complete learning transfer.
CONCLUSIONS: These results suggest that learning speci?city may result from under-activations of untrained visual neurons due to insufficient bottom-up stimulation and/or top-down attention during training. High-level perceptual learning thus may not functionally connect to these neurons for learning transfer. 
关键词perceptual learning under-stimulation specificity transfer
学科领域感知觉心理学
URL查看原文
收录类别其他
语种英语
文献类型会议论文
条目标识符http://ir.psych.ac.cn/handle/311026/20788
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Department of Psychology, IDG/McGovern Institute for Brain Research, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China, 100871
推荐引用方式
GB/T 7714
Ying-Zi Xiong,Jun-Yun Zhang,Cong Yu. 知觉学习朝向特异性的可能机制——未训练朝向刺激不足[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.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ying-Zi Xiong]的文章
[Jun-Yun Zhang]的文章
[Cong Yu]的文章
百度学术
百度学术中相似的文章
[Ying-Zi Xiong]的文章
[Jun-Yun Zhang]的文章
[Cong Yu]的文章
必应学术
必应学术中相似的文章
[Ying-Zi Xiong]的文章
[Jun-Yun Zhang]的文章
[Cong Yu]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。