PERCEPTUAL LEARNING INCREASES THE SENSORY GAIN OF THE EARLY AND LATE ERP COMPONENT
Xi Jie1; Wu-li Jia1,2; Pan Zhang1,3; Chang-bing Huang1
2017-07
Conference Name2017年第二届曲阜视觉科学会议
Conference Date2017.7.1
Conference Place曲阜
Abstract

PURPOSE: Despite training makes perfect improvement in most perceptual tasks, the neural and functional mechanisms of perceptual learning are still under debate. Here we used a combination of psychophysics, event-related potentials (ERPs), and quantitative modeling to explicitly link learning-induced behavioral improvements with changes in neural activities.
METHODS: Twenty subjects underwent ten sessions of training to identify the orientation of a peripherally presented sinewave grating. A set of psychophysics and ERP measurements at different retinal locations, contrast levels, and eyes were conducted before and after training.
RESULTS: We found that training substantially improved visual acuity and contrast sensitivity functions, increased the amplitude, and decreased the latency of the ERP components at the trained location. The learning effect was particularly pronounced around the trained condition, consistent with previous findings. Modeling analysis revealed that training led to changes in both contrast, slope and response gains for different ERP component, and learning induced changes encompassed different sensory gain from the early to the late ERP components. Moreover, the learning effects and improvements in latency at the trained location were largely retained over a three-month period.
CONCLUSIONS: Our results support a model of PL in which neuronal plasticity occurs at both early and late ERP components, but with different mechanisms.
The results of the late ERP components may reflect top-down effects such as attention involved in the processing of the stimuli which amplify the increase of the amplitude or decrease the latency of the late ERP components.

KeywordPerceptual learning Contrast Response Function ERPs Contrast gain Response gain
Language英语
Document Type会议论文
Identifierhttp://ir.psych.ac.cn/handle/311026/22134
Collection心理所主办、承办、协办学术会议_2017年第二届曲阜视觉科学会议_会议摘要
Affiliation1.Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences
2.Departments of Psychology, Huaiyin Normal University
3.Laboratory of Brain Processes (LOBES), Departments of Psychology, The Ohio State University, Columbus, OH, United States of America
First Author AffilicationInstitute of Psychology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xi Jie,Wu-li Jia,Pan Zhang,et al. PERCEPTUAL LEARNING INCREASES THE SENSORY GAIN OF THE EARLY AND LATE ERP COMPONENT[C],2017.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xi Jie]'s Articles
[Wu-li Jia]'s Articles
[Pan Zhang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xi Jie]'s Articles
[Wu-li Jia]'s Articles
[Pan Zhang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xi Jie]'s Articles
[Wu-li Jia]'s Articles
[Pan Zhang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.