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首页> 外文期刊>The European Journal of Neuroscience >Musical prediction error responses similarly reduced by predictive uncertainty in musicians and non-musicians
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Musical prediction error responses similarly reduced by predictive uncertainty in musicians and non-musicians

机译：音乐家和非音乐家的预测不确定性类似地减少音乐预测错误响应

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Auditory prediction error responses elicited by surprising sounds can be reliably recorded with musical stimuli that are more complex and realistic than those typically employed in EEG or MEG oddball paradigms. However, these responses are reduced as the predictive uncertainty of the stimuli increases. In this study, we investigate whether this effect is modulated by musical expertise. Magnetic mismatch negativity (MMNm) responses were recorded from 26 musicians and 24 non-musicians while they listened to low- and high-uncertainty melodic sequences in a musical multi-feature paradigm that included pitch, slide, intensity and timbre deviants. When compared to non-musicians, musically trained participants had significantly larger pitch and slide MMNm responses. However, both groups showed comparable reductions in pitch and slide MMNm amplitudes in the high-uncertainty condition compared with the low-uncertainty condition. In a separate, behavioural deviance detection experiment, musicians were more accurate and confident about their responses than non-musicians, but deviance detection in both groups was similarly affected by the uncertainty of the melodies. In both experiments, the interaction between uncertainty and expertise was not significant, suggesting that the effect is comparable in both groups. Consequently, our results replicate the modulatory effect of predictive uncertainty on prediction error; show that it is present across different types of listeners; and suggest that expertise-related and stimulus-driven modulations of predictive precision are dissociable and independent.
机译：与EEG或MEG oddball范式中通常使用的音乐刺激相比，由意外声音引发的听觉预测错误反应可以可靠地记录下来，这些音乐刺激更复杂、更真实。然而，随着刺激的预测不确定性的增加，这些反应会减少。在这项研究中，我们调查了这种效应是否受到音乐专业知识的调节。记录了26名音乐家和24名非音乐家在一个音乐多特征范式中聆听低不确定性和高不确定性旋律序列时的磁失配负性（MMNm）反应，包括音调、滑动、强度和音色偏差。与非音乐家相比，受过音乐训练的参与者的音高和滑动MMNm反应明显更大。然而，与低不确定度条件相比，两组在高不确定度条件下的俯仰和滑动MMNm振幅都有类似的降低。在一个单独的行为偏差检测实验中，音乐家比非音乐家对自己的反应更准确、更自信，但这两组人的偏差检测同样受到旋律不确定性的影响。在这两个实验中，不确定性和专业知识之间的相互作用并不显著，这表明两组的效果是可比的。因此，我们的结果复制了预测不确定性对预测误差的调制效应；表明它存在于不同类型的听众中；并指出，专业知识相关的和刺激驱动的预测精度调节是独立的。

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