乐音协和性感知的脑电信号分析  

Analysis of EEG Signal of Musical Concordance Perception

作　　者：丁凡 何穆 DING Fan;HE Mu(Communication Acoustics Lab of Communication University of China,Beijing 100024,China;Beibu Gulf University,Qinzhou 535011,China)

机构地区：[1]中国传媒大学传播声学研究所,北京100024 [2]北部湾大学,广西钦州535011

出　　处：《电声技术》2020年第9期72-76,共5页Audio Engineering

基　　金：广西自然科学青年基金项目“低频声对视听场景情感感知影响的实验研究”(No.2019GXNSFBA245027);2017钦州学院高端人才科研启动项目“低频域听力敏感度的研究”(No.2017KYQD120)。

摘　　要：以音乐表达情感最基本的元素"音程"作为刺激信号,记录12名被试在协和与非协和状态下各脑区各频段的脑电波功率进行统计分析。结果显示:方差分析发现,相较于平静状态,听不同乐音音程时的脑电波平均功率变化有显著性差异,且变化集中在前额区和顶枕区;相关样本t检验后显示,听不协和的音程普遍比听协和的音程脑电α波段和β(LF)波段的平均功率有显著性增大趋势,θ和β(HF)波段的平均功率无显著性差异;颞区对协和与非协和音程最不敏感,各频段脑电波平均功率无显著性变化。The EEG power Spectral of each frequency band in each brain region of 12 subjects was recorded and analyzed statistically by using the most basic element of music expression emotion"interval"as stimulation.The results showed that compared with calm state,there was significant difference in the average power of brain waves when listening to different sounds,and the changes were concentrated in the forehead and parietal occipital regions.After t-test of related samples,it was shown that the range of hearing dissonance generally increased significantly compared with the average power of alpha band andβ(LF)band of auditory Concorde.but there was no significant difference between the average power of theta band andβ(HF)band.The temporal region was the least sensitive to Concorde and non-Concordant range,and there was no significant change in the average power of brain waves in each frequency band.

关 键 词：脑电波功率 音程色彩 T检验 

分 类 号：TN912[电子电信—通信与信息系统]