Neural sensitivity to human voices: ERP evidence of task and attentional influences
Neural sensitivity to human voices: ERP evidence of task and attentional influences
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DOI：
10.1111/1469-8986.00031
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发表时间：
2003-03-01
期刊：
影响因子：
3.7
通讯作者：
Bentin, S
中科院分区：
文献类型：
--
作者：
Levy, DA;Granot, R;Bentin, S
在早期的一项研究中，我们发现人类的声音诱发了一个积极的事件相关电位（ERP）峰值在刺激开始后的320英寸，从乐器音调引起的不同。在这里，我们表明，虽然类似的潜伏期的新奇P3，这种声音敏感的反应（VSR）不同的先决条件和头皮分布。此外，当参与者不注意刺激时，对声音的反应与其他谐波刺激（弦乐，管乐和铜管）没有区别。在一项需要注意音色以外的特征的任务中，声音并不能与类似于弦的刺激（弦）区分开来，但可以与其他谐波刺激区分开来。我们认为，由声音和类似的声音引起的成分反映了注意力的分配的基础上的刺激意义（而不是新奇），并提出了一个解释的任务和注意力的因素，有助于效果。
In an earlier study, we found that human voices evoked a positive event-related potential (ERP) peaking at similar to 320 ins after stimulus onset, distinctive from those elicited by instrumental tones. Here we show that though similar in latency to the Novelty P3, this Voice-Sensitive Response (VSR) differs in antecedent conditions and scalp distribution. Furthermore, when participants were not attending to stimuli, the response to voices was undistinguished from other harmonic stimuli (strings, winds, and brass). During a task requiring attending to a feature other than timbre, voices were not distinguished from voicelike stimuli (strings), but were distinguished from other harmonic stimuli. We suggest that the component elicited by voices and similar sounds reflects the allocation of attention on the basis of stimulus significance (as opposed to novelty), and propose an explanation of the task and attentional factors that contribute to the effect.