The alpha experience revisited: Biofeedback in the transformation of psychological state

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Reviews empirical research and conceptual perspectives on the development of unusual experiential states during EEG alpha-biofeedback training. It is concluded that the occurrence of the “alpha experience” is relatively independent of the strength or density of EEG alpha activity and that the transformation in experience during feedback training can be accounted for by 8 categories of complexly interrelated factors: (a) sensory deprivation, (b) sustained alertness, (c) concentration/meditation, (d) introspective sensitization, (e) expectation, (f) perceived success at the feedback task, (g) attribution processes, and (h) individual differences. Conceptual and empirical implications for biofeedback and for the study of physiological-experiential relationships are discussed. (74 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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