Abstract
Two experiments were done with subjects from a paid pool of undergraduates. In each study, there were five 1-hour sessions on each of 5 days: (1) Baseline: Rewards given for randomly selected 20% of the 700-ms sequential epochs; mean and SD of baseline power differences determined. 2) Exploration: Subjects were rewarded when right minus left alpha differences in an epoch were greater than the baseline mean plus about .85 SD (p = .20); subjects told to discover how to generate rewards. (3)–(5). Training: Subjects were paid (over and above the $8/h flat rate) in proportion to their hit rates. In the first study (in which active filters passed 8–12 Hz activity, and the rectified, integrated amplitude was utilized), 6 of 8 subjects met learning criteria (a significant difference between baseline and training scores). In the second study (in which on-line FFTs were used to extract alpha power), 3 of 5 subjects met learning criteria.
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Rosenfeld, J.P., Cha, G., Blair, T. et al. Operant (biofeedback) control of left-right frontal alpha power differences: Potential neurotherapy for affective disorders. Biofeedback and Self-Regulation 20, 241–258 (1995). https://doi.org/10.1007/BF01474516
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DOI: https://doi.org/10.1007/BF01474516