Propagation of Alpha Waves Corresponding to Subjective Preference from the Right Hemisphere to the Left with Changes in the IACC of a Sound Field
Propagation of Alpha Waves Corresponding to Subjective Preference from the Right Hemisphere to the Left with Changes in the IACC of a Sound Field
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随着声场 IACC 的变化，与主观偏好相对应的 α 波从右半球到左半球的传播
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Y. Ando
中科院分区：
文献类型：
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作者：
Shin;Kazuki Nishio;Y. Ando
试图澄清人的大脑活动和声场的主观评价之间的关系。为此，我们分析了在大脑半球的头皮上测量的脑电图（EEG）中的α波的自相关函数（ACF）。分析互相关函数（CCF）以研究左右半球头皮上的α波流动。为了描述α波的时间特性，分析了当音乐刺激的耳间互相关函数（IACC）幅值发生变化时，其包络线的有效时程（τe）。发现τe值仅在右半球（电极T4）与主观偏好密切对应。对于头皮上的信号流的特性，CCF的最大值（|φ（τ）|最大值）及其延迟时间（τm）。发现右半球（T4）首先被激活，并且这种活动向左半球（T3）传播。从T4到T3的传播时间约为100 ms。
Attempts are made to clarify the relationship between the person's brain activity and a subjective evaluation of the sound fiel d. For this purpose, we analyzed the autocorrelation function (ACF) of the alpha wave in the electroencephalogram (EEG) measured on the scalp over cerebral hemispheres. The cross-correlation function (CCF) was analyzed to investigate the flow of alpha waves o n the scalp over both the left and right hemispheres. To describe the temporal characteristics of the alpha waves, when the magni tude of interaural cross-correlation function (IACC) of a musical stimulus changed, the effective duration of the envelope of the AC F (τe) was analyzed. The values of τe were found to closely correspond to the subjective preference only in the right hemisphere (electrode T4). For the characteristics of the signal flow on the scalp, the maximum value of the CCF (| φ(τ)|max) between the alpha waves measured at different electrodes and its delay time ( τm) were analyzed. The right hemisphere (T4) was found to be activated first, and this activity propagated toward the left hemisphere (T3). The propagation time from T4 to T3 was about 100 ms.