Abstract:In this study, we explored the relationship between different levels of consciousness and music processing. We used the EEG data of 43 participants, including 7 normal participants, 17 minimally conscious state (MCS) participants and 19 vegetative state (VS) participants. During the experiment, participants were requested to listen to the traditional folk music “Jasmine”. We extracted tensor components from the EEG by using hierarchical alternating least squares (HALS) non-negative tensor decomposition. After that, we selected components correlated with the five music informatic features (fluctuation centroid, fluctuation entropy, key clarity, pulse clarity and mode) respectively. Then power spectrum ratio analysis and brain topography analysis were applied to the components selected to study the EEG response. The results showed that: 1) differences existed in the proportion of alpha waves of the EEG response to the 5 music features among the normal group, the MCS group and the VS group: fluctuation centroid (normal group 0.687±0.193, MCS group 0.033±0.022, VS group 0.063±0.040, P<0.001), fluctuation entropy (normal group 0.588±0.132, MCS group 0.041±0.025, VS group 0.085±0.077, P<0.001), key clarity (normal group 0.668±0.295, MCS group 0.096±0.103, VS group 0.057±0.065, P<0.001), pulse clarity (normal group 0.672±0.064, MCS group 0.144±0.242, VS group 0.044±0.044, P<0.001), mode (normal group 0.432±0.273, MCS group 0.057±0.049, VS group 0.033±0.026, P<0.001).Except feature mode, beta wave of the EEG response to the rest 4 music features have the same statistical results as alpha wave (P<0.05). 2) The rhythm of the response of MCS group and VS group to the 5 music features was mainly the slow wave of delta wave and theta wave. 3) As for the EEG activation area, the normal group EEG response to the 5 music features mainly distributed in frontal lobe but the MCS and VS group EEG response mainlyin parietal lobe. The results showed that the level of consciousness had effects on brain processing music feature, which provided a new research paradigm for exploring the relation between level of consciousness and music processing.
梅戬, 王小宇, 刘杨, 李景琦, 刘克洪, 杨勇, 丛丰裕. 不同意识状态对音乐感知的差异性:基于音乐特征与脑电张量分解的研究[J]. 中国生物医学工程学报, 2021, 40(3): 257-265.
Mei Jian, Wang Xiaoyu, Liu Yang, Li Jingqi, Liu Kehong, Yang Yong, Cong Fengyu. The Difference of Music Processing among Different State of Consciousness: A Study Based on Music Features and EEG Tensor Decomposition. Chinese Journal of Biomedical Engineering, 2021, 40(3): 257-265.
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