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Conflicting results in EEG alpha feedback studies
- Source :
- Biofeedback and Self-Regulation. 1:63-75
- Publication Year :
- 1976
- Publisher :
- Springer Science and Business Media LLC, 1976.
-
Abstract
- Success or failure of EEG feedback training for alpha enhancement can depend on how alpha activity is quantified and fed back. Alpha-enhancement failures usually employ a percent time(%) technique; successes typically use amplitude integration(e). To dramatize the differences between percent and integration techniques, we derived both measures simultaneously from left occipital(O 1 ) and left central(C 3 ) sites for 16 male subjects who were given 5.6 hours of integrated alpha feedback from the midline occipital(Oz ) site. At both the O 1 and C 3 sites the integrated and percent measures were not equivalent and not linearly related. Statistically significant differences in the(integrated, percent) correlation coefficients(z-transformed) were observed under the different recording conditions: alpha enhancement, alpha enhancement, alpha suppression, and baselines. Theoretical discussion of integration and percent techniques is given and the adoption of amplitude integration measures and feedback stimuli is strongly advocated.
- Subjects :
- Male
Analysis of Variance
medicine.medical_specialty
medicine.diagnostic_test
Action Potentials
Alpha (ethology)
Biofeedback, Psychology
Audiology
Electroencephalography
Correlation
Alpha Rhythm
Neuropsychology and Physiological Psychology
Amplitude
medicine
Humans
Regression Analysis
Occipital Lobe
General Agricultural and Biological Sciences
Applied Psychology
Eeg alpha
Mathematics
Subjects
Details
- ISSN :
- 15733270 and 03633586
- Volume :
- 1
- Database :
- OpenAIRE
- Journal :
- Biofeedback and Self-Regulation
- Accession number :
- edsair.doi.dedup.....249f088898e70dbe84ff797be69e83e0