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Influence of Audiovisual Training on Horizontal Sound Localization and Its Related ERP Response

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Author
Cai, Yuexin
Chen, Guisheng
Zhong, Xiaoli
Yu, Guangzheng
Mo, Hanjie
Jiang, Jiajia
Chen, Xiaoting
Zhao, Fei
Zheng, Yiqing
Date
2018-10-23
Acceptance date
2018-10-01
Date Deposited
2018-10-23
Type
Article
Publisher
Frontiers Media
ISSN
1662-5161
Metadata
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Abstract
The objective was to investigate the influence of audiovisual training on horizontal sound localization and the underlying neurological mechanisms using a combination of psychoacoustic and electrophysiological (i.e., event-related potential, ERP) measurements on sound localization. Audiovisual stimuli were used in the training group, whilst the control group was trained using auditory stimuli only. Training sessions were undertaken once per day for three consecutive days. Sound localization accuracy was evaluated daily after training, using psychoacoustic tests. ERP responses were measured on the first and last day of tasks. Sound localization was significantly improved in the audiovisual training group when compared to the control group. Moreover, a significantly greater reduction in front-back confusion ratio for both trained and untrained angles was found between pre- and post-test in the audiovisual training group. ERP measurement showed a decrease in N1 amplitude and an increase in P2 amplitude in both groups. However, changes in late components were only found in the audiovisual training group, with an increase in P400 amplitude and decrease in N500 amplitude. These results suggest that the interactive effect of audiovisual localization training is likely to be mediated at a relatively late cognitive processing stage.
Journal/conference proceeding
Frontiers in Human Neuroscience;
Citation
Cai, Y., Chen, G., Zhong, X., YU, G., Mo, H., Jiang, J., Chen, X., Zhao, F. and Zheng, Y. (2018) 'Influence of audiovisual training on horizontal sound localization and its related ERP response', Frontiers in Human Neuroscience, 12, p.423. https://doi.org/10.3389/fnhum.2018.00423
URI
http://hdl.handle.net/10369/10144
DOI
https://doi.org/10.3389/fnhum.2018.00423
Description
Article published in Frontiers in Human Neuroscience available open access at https://doi.org/10.3389/fnhum.2018.00423
Rights
http://creativecommons.org/licenses/by/4.0/
Sponsorship
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
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