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Context effects on auditory distraction

机译：语境对听觉分心的影响

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The purpose of the study was to test the hypothesis that sound context modulates the magnitude of auditory distraction, indexed by behavioral and electrophysiological measures. Participants were asked to identify tone duration, while irrelevant changes occurred in tone frequency, tone intensity, and harmonic structure. Frequency deviants were randomly intermixed with standards (Uni-Condition), with intensity deviants (Bi-Condition), and with both intensity and complex deviants (Tri-Condition). Only in the Tri-Condition did the auditory distraction effect reflect the magnitude difference among the frequency and intensity deviants. The mixture of the different types of deviants in the Tri-Condition modulated the perceived level of distraction, demonstrating that the sound context can modulate the effect of deviance level on processing irrelevant acoustic changes in the environment. These findings thus indicate that perceptual contrast plays a role in change detection processes that leads to auditory distraction.
机译：这项研究的目的是检验以下假设：声音背景会调节听觉分心的大小，并由行为和电生理学指标来衡量。要求参与者确定音调持续时间，而音调频率，音调强度和谐波结构发生无关的变化。频率偏差与标准偏差（Uni-Condition），强度偏差（Bi-Condition）以及强度偏差和复杂偏差（Tri-Condition）随机混合。只有在三段式条件下，听觉干扰效应才反映出频率和强度偏差之间的大小差异。在“三态”条件下，不同类型的偏差的混合调节了人们的注意力分散程度，表明声音环境可以调节偏差水平对处理环境中不相关的声学变化的影响。因此，这些发现表明，知觉对比在导致听觉分神的变化检测过程中起作用。

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