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首页> 外文期刊>Auditory Perception & Cognition. >The Impact of Probabilistic Cues on Sound-related Pupil Dilation and ERP Responses in 7-9-year-old Children
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The Impact of Probabilistic Cues on Sound-related Pupil Dilation and ERP Responses in 7-9-year-old Children

机译：概率线索对7-9岁儿童声音相关瞳孔放大和ERP反应的影响

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摘要

Control of involuntary orienting of attention toward new but task-irrelevant events is essential to successfully perform a task. We investigated top-down control of involuntary orienting of attention caused by task-irrelevant novel sounds embedded in a sequence of repeated standard sounds in 7-9-year-old children (N = 30) and in an adult control group (N = 30). The type of sound was announced by visual cues, which were correct in 80% of the trials. We co-registered sound-related pupil dilation responses (PDR), the attention-related component P3a in the EEG and performance. Task-irrelevant novel sounds evoked increased amplitudes of the PDR and the P3a and prolonged reaction times in both age groups. In children only, invalidly cued novel sounds evoked larger PDR amplitudes than validly cued novel sounds, while this cue effect was not observed for standard sounds. In both age groups, P3a amplitudes in the centro-parietal region were reduced to the correctly cued compared to the incorrectly cued novel sounds, indicating top-down control of orienting of attention. The reaction time prolongation to both validly and invalidly cued novel sounds were similar in both age groups.These findings demonstrate that children are capable of reducing the orienting of attention and evaluation triggered by task-irrelevant sounds by using probabilistic cues. Children's pupil results indicate a high sensitivity of pupil dynamics to cue-related top-down influences on novel sound processing, emphasizing the utility of pupillometry in developmental research.
机译：无意识的注意定向的控制新但task-irrelevant事件成功执行任务的关键。自上而下的控制的调查定向的关注task-irrelevant所致小说听起来嵌入在一个重复序列标准声音7-9-year-old孩子(N = 30)在一个成年人对照组(N = 30)。的声音宣布了视觉线索正确的在80%的试验中。声音相关的瞳孔放大反应(PDR)P3a脑电图和区域的组件表演美国药典和P3a振幅增加延长反应时间在两个年龄组。孩子,无用地暗示小说的声音唤起PDR振幅超过有效暗示小说听起来,这暗示效应没有被观察到标准的声音。振幅centro-parietal地区相比减少了正确的暗示错误地暗示小说的声音,指示自上而下的注意定向的控制。有效和反应时间延长无用地暗示小说的声音在这两方面都是相似的年龄群体。孩子们能够减少定向引发的关注和评价利用概率task-irrelevant声音暗示。灵敏度cue-related学生动态自上而下的影响小说的声音处理,强调瞳孔测量法的效用发展研究。

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