Influence of Audiovisual Training on Horizontal Sound Localization and Its Related ERP Response.
Influence of Audiovisual Training on Horizontal Sound Localization and Its Related ERP Response.
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视听训练对水平声音定位的影响及其相关ERP响应
DOI：
10.3389/fnhum.2018.00423
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发表时间：
2018
影响因子：
2.9
通讯作者：
Zheng Y
中科院分区：
文献类型：
--
作者：
Cai Y;Chen G;Zhong X;Yu G;Mo H;Jiang J;Chen X;Zhao F;Zheng Y
目的是研究视听训练对水平声音定位的影响以及使用心理声学和电生理学的组合（即，事件相关电位（ERP）测量。训练组采用视听刺激，对照组仅采用听觉刺激。培训班每天进行一次，连续三天。训练后每天使用心理声学测试评估声音定位准确性。ERP反应在任务的第一天和最后一天进行测量。与对照组相比，视听训练组的声音定位有显著改善。此外，一个显着更大的减少前后混淆比的培训和未经培训的角度之间的视听培训组的前测试和后测试。ERP测量显示两组N1波幅均降低，P2波幅均升高。而晚成分的变化仅见于视听训练组，P400振幅增加，N500振幅降低。这些结果表明，视听本地化培训的互动效果可能是在一个相对较晚的认知加工阶段介导的。
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.
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