バイオフィードバックによるα波活性促進に関する研究

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In regard to alpha activity enhancement using auditory alpha feedback, we took notice of two principal problems : (1) the feedback techniques to transmit the subjects' alpha activities, (2) the subjects' emotional changes when they received the feedback signals. As for the feedback techniques, binary, integrated or improving integrated (integrate for 5 sec. period) feedback methods have been used previously. When the subjects' alpha amplitude is lower than the set threshold, and so feedback signals are not given, they feel uneasy or impatient. In this study, in order to maintain the subject's mental stability during the feedback training, we designed the following two experiments. [Experiment I] Even if the subject's alpha amplitude is lower than the set threshold, he can be given proportional feed-back signal (scoring imformation) every 1 sec. [Experiment II] The subject can be given the feedback signal not proportionaly but derivativelly . To find his own qualititative alpha activity every time strengthens his self-persuasion and increases his intention to attain his emotional stability. To grasp the aspect of his differential alpha changes during feedback training accelerates the nervous-control response, and so modifies the self-control ability. In these experiments, both feedback techniques above mentioned were found effective in enhancing alpha activities. especially for the subjuct whose basic alpha amplitude is extremely small or whose percentage time alpha is comparatively low (up to 20%). And the results of the experiments suggested that the subject's self-persuasion when he received the feedback signals played an important role in al ha activity enhancement.
日本バイオフィードバック学会の論文
1992-06-05

バイオフィードバックによるα波活性促進に関する研究

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