Dousty Mehdy, Daneshvar Sabalan, Haghjoo Majid
Biomedical Engineering Department, Electrical Engineering Faculty, Sahand University of Technology, Tabriz, Iran.
J Electrocardiol. 2011 May-Jun;44(3):396.e1-6. doi: 10.1016/j.jelectrocard.2011.01.005. Epub 2011 Feb 24.
Research indicates that music can affect heart rate, blood pressure, and skin conductance. Music can stimulate central emotions in the brain and release biochemical materials that change the physiologic state. We sought to compare changes in the electrical function of the heart in response to music.
Subjects were asked to listen to 2 types of music, namely, sedative and arousal music, in conjunction with two 30-second periods of complete silence. The experiment was conducted in 4 segments: the first and third parts were silence, and the second and fourth parts were music. First, the response to each type of music was compared with that to the preceding period of silence. Next, the responses to both types of music were compared. Finally, the response to music regardless of the type was compared with that to silence.
The amplitude of polarization and depolarization changed in response to different kinds of music. The electrical function of the heart in response to music, irrespective of the music type, differed from that in response to silence. The 2 types of music impacted the electrical function of the heart in different ways: the arousal music influenced T-wave maximum amplitude, whereas no such change was recorded in response to the sedative music.
The bandwidth of the polarization and depolarization of the heart rate and R-wave amplitude increased in response to music by comparison with silence. In addition, the heart did not seem to try to synchronize with music. The mean R-wave amplitude in sedative music is higher than the arousal music, so our heart works differently when different types of music are heard.
研究表明，音乐可影响心率、血压和皮肤电传导。音乐能刺激大脑中的中枢情绪并释放改变生理状态的生化物质。我们试图比较心脏电功能对音乐的反应变化。
受试者被要求聆听两种类型的音乐，即镇静音乐和唤醒音乐，并伴有两个30秒的完全安静时段。实验分4个部分进行：第一和第三部分为安静时段，第二和第四部分为音乐时段。首先，将每种音乐类型的反应与前一个安静时段的反应进行比较。其次，比较两种音乐类型的反应。最后，将无论何种类型的音乐的反应与安静时段的反应进行比较。
极化和去极化的幅度因不同类型的音乐而发生变化。心脏对音乐的电功能，无论音乐类型如何，都与对安静的反应不同。两种类型的音乐以不同方式影响心脏的电功能：唤醒音乐影响T波最大幅度，而对镇静音乐的反应未记录到此类变化。
与安静相比，心率的极化和去极化带宽以及R波幅度在对音乐的反应中增加。此外，心脏似乎并未试图与音乐同步。镇静音乐中的平均R波幅度高于唤醒音乐，因此当听到不同类型的音乐时，我们的心脏工作方式不同。
