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Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude

Although the first experiments on alpha-neurofeedback date back nearly six decades ago, when Joseph Kamiya reported successful operant conditioning of alpha-rhythm in humans, the effectiveness of this paradigm in various experimental and clinical settings is still a matter of debate. Here, we invest...

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Autores principales: Ossadtchi, Alexei, Shamaeva, Tatiana, Okorokova, Elizaveta, Moiseeva, Victoria, Lebedev, Mikhail A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476573/
https://www.ncbi.nlm.nih.gov/pubmed/28630468
http://dx.doi.org/10.1038/s41598-017-04012-0
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author Ossadtchi, Alexei
Shamaeva, Tatiana
Okorokova, Elizaveta
Moiseeva, Victoria
Lebedev, Mikhail A.
author_facet Ossadtchi, Alexei
Shamaeva, Tatiana
Okorokova, Elizaveta
Moiseeva, Victoria
Lebedev, Mikhail A.
author_sort Ossadtchi, Alexei
collection PubMed
description Although the first experiments on alpha-neurofeedback date back nearly six decades ago, when Joseph Kamiya reported successful operant conditioning of alpha-rhythm in humans, the effectiveness of this paradigm in various experimental and clinical settings is still a matter of debate. Here, we investigated the changes in EEG patterns during a continuously administered neurofeedback of P4 alpha activity. Two days of neurofeedback training were sufficient for a significant increase in the alpha power to occur. A detailed analysis of these EEG changes showed that the alpha power rose because of an increase in the incidence rate of alpha episodes, whereas the amplitude and the duration of alpha oscillations remained unchanged. These findings suggest that neurofeedback facilitates volitional control of alpha activity onset, but alpha episodes themselves appear to be maintained automatically with no volitional control – a property overlooked by previous studies that employed continuous alpha-power neurofeedback. We propose that future research on alpha neurofeedback should explore reinforcement schedules based on detection of onsets and offsets of alpha waves, and employ these statistics for exploration and quantification of neurofeedback induced effects.
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spelling pubmed-54765732017-06-23 Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude Ossadtchi, Alexei Shamaeva, Tatiana Okorokova, Elizaveta Moiseeva, Victoria Lebedev, Mikhail A. Sci Rep Article Although the first experiments on alpha-neurofeedback date back nearly six decades ago, when Joseph Kamiya reported successful operant conditioning of alpha-rhythm in humans, the effectiveness of this paradigm in various experimental and clinical settings is still a matter of debate. Here, we investigated the changes in EEG patterns during a continuously administered neurofeedback of P4 alpha activity. Two days of neurofeedback training were sufficient for a significant increase in the alpha power to occur. A detailed analysis of these EEG changes showed that the alpha power rose because of an increase in the incidence rate of alpha episodes, whereas the amplitude and the duration of alpha oscillations remained unchanged. These findings suggest that neurofeedback facilitates volitional control of alpha activity onset, but alpha episodes themselves appear to be maintained automatically with no volitional control – a property overlooked by previous studies that employed continuous alpha-power neurofeedback. We propose that future research on alpha neurofeedback should explore reinforcement schedules based on detection of onsets and offsets of alpha waves, and employ these statistics for exploration and quantification of neurofeedback induced effects. Nature Publishing Group UK 2017-06-19 /pmc/articles/PMC5476573/ /pubmed/28630468 http://dx.doi.org/10.1038/s41598-017-04012-0 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Ossadtchi, Alexei
Shamaeva, Tatiana
Okorokova, Elizaveta
Moiseeva, Victoria
Lebedev, Mikhail A.
Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude
title Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude
title_full Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude
title_fullStr Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude
title_full_unstemmed Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude
title_short Neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude
title_sort neurofeedback learning modifies the incidence rate of alpha spindles, but not their duration and amplitude
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476573/
https://www.ncbi.nlm.nih.gov/pubmed/28630468
http://dx.doi.org/10.1038/s41598-017-04012-0
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