Left-hemisphere activation is associated with enhanced vocal pitch error detection in musicians with absolute pitch.
Left-hemisphere activation is associated with enhanced vocal pitch error detection in musicians with absolute pitch.
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DOI：
10.1016/j.bandc.2013.11.007
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发表时间：
2014-02
影响因子：
2.5
通讯作者：
Larson, Charles R.
中科院分区：
文献类型：
--
作者：
Behroozmand, Roozbeh;Ibrahim, Nadine;Korzyukov, Oleg;Robin, Donald A.;Larson, Charles R.
关键词：
在说话和唱歌的过程中，处理听觉反馈以控制音高的能力至关重要。先前的研究表明，具有绝对音高（AP）的音乐家发展了专门的左半球音高处理机制。本研究采用听觉反馈音高扰动范式，结合ERP记录，以检验与相对音高（RP）音乐家和非音乐家（NM）相比，AP音乐家的左半球神经机制是否增强了音高错误检测和控制。结果显示，与NM组相比，AP和RP音乐家的右半球对音高变化的语音反馈有更强的N1反应。然而，左半球的P2组件激活更大的AP和RP音乐家相比，NM和AP相比，RP音乐家。与音乐家相比，NM组在对反馈音高扰动产生补偿性声音反应方面较慢，并且在反馈扰动被移除后，他们未能重新调整他们的音高。这些发现表明，在皮层神经处理的早期阶段，音乐家的右半球在检测声音反馈中的音高变化方面更为活跃。在后期阶段，左半球是更活跃的听觉反馈的声音运动控制过程中，似乎涉及专门的机制，促进音高处理AP相比RP音乐家。这些研究结果表明，在说话或唱歌等任务中，AP能力的左半球机制与音高控制过程中听觉反馈音高处理的改善有关。
The ability to process auditory feedback for vocal pitch control is crucial during speaking and singing. Previous studies have suggested that musicians with absolute pitch (AP) develop specialized left-hemisphere mechanisms for pitch processing. The present study adopted an auditory feedback pitch perturbation paradigm combined with ERP recordings to test the hypothesis whether the neural mechanisms of the left-hemisphere enhance vocal pitch error detection and control in AP musicians compared with relative pitch (RP) musicians and non-musicians (NM). Results showed a stronger N1 response to pitch-shifted voice feedback in the right-hemisphere for both AP and RP musicians compared with the NM group. However, the left-hemisphere P2 component activation was greater in AP and RP musicians compared with NMs and also for the AP compared with RP musicians. The NM group was slower in generating compensatory vocal reactions to feedback pitch perturbation compared with musicians, and they failed to re-adjust their vocal pitch after the feedback perturbation was removed. These findings suggest that in the earlier stages of cortical neural processing, the right hemisphere is more active in musicians for detecting pitch changes in voice feedback. In the later stages, the left-hemisphere is more active during the processing of auditory feedback for vocal motor control and seems to involve specialized mechanisms that facilitate pitch processing in the AP compared with RP musicians. These findings indicate that the left hemisphere mechanisms of AP ability are associated with improved auditory feedback pitch processing during vocal pitch control in tasks such as speaking or singing.
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