Musical expertise facilitates statistical learning of rhythm and the perceptive uncertainty: A cross-cultural study

被引:14
作者
Daikoku, Tatsuya [1 ,2 ]
Yumoto, Masato [1 ,3 ]
机构
[1] Univ Tokyo, Grad Sch Med, Dept Clin Lab, Tokyo, Japan
[2] Univ Tokyo, Int Res Ctr Neurointelligence, Tokyo, Japan
[3] Gunma Paz Univ, Adv Med Sci Res Ctr, Gunma, Japan
关键词
Rhythm; Beat; Statistical learning; Information theory; Markovian; n-gram; Predictive coding; Uncertainty; Entropy; Musical education; Culture; NEUROPHYSIOLOGICAL EVIDENCE; MISMATCH NEGATIVITY; AUDITORY SEQUENCE; POTENTIAL ERP; IMPLICIT; SPEECH; CORTEX; MEMORY; PITCH; MMN;
D O I
10.1016/j.neuropsychologia.2020.107553
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
The brain extracts statistical regularities from sequential information around our environment. This is referred to as statistical learning (SL). Statistical learning is considered an innate function in the human brain and contributes to the brain's development. Within the framework of predictive coding, this learning system allows us to predict a future state to minimize sensory reaction and resolve uncertainty around the world. By auditory statistical learning, over the brain's development, humans become able to comprehend language and music. An increasing number of studies has revealed that Western-classical musical training optimizes the brain's probabilistic model of music and enhances the accuracy of perceptive uncertainty (entropy) in newly encountered melody. No study, however, investigates how musical training modulates the probabilistic model of rhythm, and how the musical culture tunes them. The present study investigated how SL of temporal sequences with and without a beat is reflected in neural responses, and how the SL is modulated by the two types of musical training in different cultures: Westernand Japanese-classical music (i.e., Hougaku). The neural representation showed evidence that the SL effects of beat sequence were prominent in the left hemisphere. This finding was larger in Westernand Japanese-classical musicians compared with non-musicians. Further, the entropy (uncertainty) of the sequences negatively correlated with neural effects of SL, mainly in the left hemisphere of the both Western and Japanese-classical musicians. These suggest that, regardless of musical culture, musical training may generally facilitate SL of rhythm. However, the specific neural components showed differences between groups of musicians: an earlier component, referred to as P1, represented the left lateralization for perceptive uncertainty in both groups of musicians, whereas a later component, referred to as N1, represented the left lateralization only in Japanese Classical musicians. These findings may suggest that the types of musical training differently modulate neural representation of underlying temporal SL, particularly global processing of uncertainty rather than local processing of transitional probability. The present study sheds new light on the neurophysiological account of Japanese classical music.
引用
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页数:13
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