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KMID : 1206220230300020007
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Journal of Korean Academy of Physical Therapy Science
2023 Volume.30 No. 2 p.7 ~ p.19
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The effects of Alpha Music Listening on Left and Right Brain α-Power and Ratio, and Depression
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Jun Kyoung-Hee
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Abstract
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Background : This study was to investigate effect of alpha music listening on brain α-intensity and left-right ratio and changes in depression scale values. Decreased brain activity, forehead activity, or left and right brain imbalances are associated with depression. In the EEG study of depression, there are a number of previous studies that confirm the depressive symptoms by asymmetry of α-power or α-ratio.
Design : Cross-sectional study.
Methods : 35 adult men and women participated in this study. All subjects were randomly assigned, and alcohol or drug use was excluded from the experiment. After conducting a preliminary depression scale test, the first EEG test was performed in a stable state. After that, a second EEG test was performed for the last 3 minutes while listening to alpha-induced music for 5 minutes. After that, the depression scale test was performed again and the results were analyzed.
Results : The results were as follows. First, the feeling of depression decreased after listening to alpha-induced music in the entire group (P<0.001). Second, There was no difference in α-power and α-ratio in the left and right corresponding areas in the stable state of all subjects in the EEG measurement(P>0.001). Third, in the analysis of all subjects, α-power and α-ratio increased in F4, T4 and P3 after listening to alpha music. And the α-power and α-ratio increased in the Fp2 domain of the depressed subjects and the F4 and T4 domains of the normal subjects (P<0.001).
Conclusions : These results suggest that listening to alpha-induced music affects the reduction of depression by increasing right brain α power and α appearance ratio.
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KEYWORD
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Alpha Music, Alpha-power, Alpha-ratio, Depression, EEG
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