Relationship between early neural responses to syntactic and acoustic irregularities in music
Relationship between early neural responses to syntactic and acoustic irregularities in music
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DOI：
10.1111/ejn.15856
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发表时间：
2022-11-14
影响因子：
3.4
通讯作者：
Nittono，Hiroshi
中科院分区：
文献类型：
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作者：
Ishida，Kai;Nittono，Hiroshi
人类可以检测声音序列中的各种异常，而无需明确地关注每个维度。事件相关电位（ERPs）已被用于检查听觉偏差检测的过程。先前的研究表明，音乐-句法异常会引发早期右前负性（ERAN），而更普遍的声学不规则会引发错配负性（MMN）。虽然这些ERP成分发生在相似的潜伏期范围和相似的头皮地形，但它们反映的检测过程之间的关系尚不清楚。本研究在两个实验中通过操纵音乐-句法（和弦进行）和声学（强度）的正交不规则性来比较这些成分。非音乐家（实验1:N= 39；实验2:N= 24）被要求在观看无声视频片段的同时听和弦序列，每个和弦序列由5个四声和弦组成。标准和弦、谐波偏差和弦、强度偏差和弦和双偏差和弦出现在每个序列的最后位置。实验1的异常刺激出现频率较低（p= 0.10），实验2的异常刺激出现频率较高（p= 0.25）。无论偏差概率如何，谐波偏差和强度偏差都引起了相似的负性，并且在潜伏期或头皮分布方面无法区分。当两种偏差同时发生时，负性呈加性增加；也就是说，双偏差ERP的振幅与单偏差ERP的和一样大。这些发现表明，音乐-句法和声学不规则性的检测是独立的，基于不同的规则表示。
Humans can detect various anomalies in a sound sequence without attending to each dimension explicitly. Event‐related potentials (ERPs) have been used to examine the processes of auditory deviance detection. Previous research has shown that music‐syntactic anomalies elicit early right anterior negativity (ERAN), whereas more general acoustic irregularities elicit mismatch negativity (MMN). Although these ERP components occur in a similar latency range with a similar scalp topography, the relationship between the detection processes they reflect remains unclear. This study compared these components by manipulating music‐syntactic (chord progression) and acoustic (intensity) irregularities orthogonally in two experiments. Non‐musicians (Experiment 1:N= 39; Experiment 2:N= 24) were asked to listen to chord sequences, each consisting of 5 four‐voice chords, as they watched a silent video clip. Standard, harmonic‐deviant, intensity‐deviant and double‐deviant chords occurred at the final position in each sequence. Deviant stimuli were presented infrequently (p= .10) in Experiment 1 and equiprobably (p= .25) in Experiment 2. Regardless of deviance probability, both harmonic and intensity deviants elicited similar negativities, which were indistinguishable in terms of latency or scalp distribution. When the two deviant types occurred simultaneously, the negativity increased in an additive manner; that is, the amplitude of the double‐deviant ERP was as large as the sum of the single‐deviant ERPs. These findings suggest that the detection of music‐syntactic and acoustic irregularities works independently, based on different regularity representations.