Alpha Rhythm Percentage Maintained During 4- and 12- Hour Feedback Periods

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Abstract
This experiment used Kamiya's feedback method (1) to induce electroencephelographic (EEG) alpha rhythm in experimental subjects. We first selected naturally high alpha subjects from a five hour conditioning procedure and subsequently reinforced high and then low amounts of alpha rhythm in them during two separate 12-hour periods. We had no idea whether the production and maintenance of either alpha rhythm or nonalpha EEG activity over such a prolonged period was possible, or which of these functions might prove more difficult for high alpha subjects. Therefore, the purpose of this study was to determine, amongst selected high alpha subjects, how much alpha time they could produce during extended conditioning sessions and to observe the effects of maintaining either alpha or nonalpha EEG activity.

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