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No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects
EEG spectral-power density was analyzed in a group of nine highly hypnotizable subjects via ten frontal, central, parietal, and occipital electrodes under four conditions: 1) wake state, 2) neutral hypnosis, 3) hypnotic suggestion for altering perception of tones, and 4) post-hypnosis. Results indic...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8102752/ https://www.ncbi.nlm.nih.gov/pubmed/33997402 http://dx.doi.org/10.1016/j.heliyon.2021.e06871 |
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author | Hiltunen, Seppo Karevaara, Maria Virta, Maarit Makkonen, Tommi Kallio, Sakari Paavilainen, Petri |
author_facet | Hiltunen, Seppo Karevaara, Maria Virta, Maarit Makkonen, Tommi Kallio, Sakari Paavilainen, Petri |
author_sort | Hiltunen, Seppo |
collection | PubMed |
description | EEG spectral-power density was analyzed in a group of nine highly hypnotizable subjects via ten frontal, central, parietal, and occipital electrodes under four conditions: 1) wake state, 2) neutral hypnosis, 3) hypnotic suggestion for altering perception of tones, and 4) post-hypnosis. Results indicate no theta-power changes between conditions, challenging previous findings that increased theta power is a marker of hypnosis. A decrease in gamma power under hypnotic suggestion and an almost significant decrease under neutral hypnosis were observed, compared to post-hypnosis. Anteroposterior power distribution remained stable over all conditions. The results are discussed and compared to earlier studies, which report heterogenous findings. |
format | Online Article Text |
id | pubmed-8102752 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-81027522021-05-14 No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects Hiltunen, Seppo Karevaara, Maria Virta, Maarit Makkonen, Tommi Kallio, Sakari Paavilainen, Petri Heliyon Research Article EEG spectral-power density was analyzed in a group of nine highly hypnotizable subjects via ten frontal, central, parietal, and occipital electrodes under four conditions: 1) wake state, 2) neutral hypnosis, 3) hypnotic suggestion for altering perception of tones, and 4) post-hypnosis. Results indicate no theta-power changes between conditions, challenging previous findings that increased theta power is a marker of hypnosis. A decrease in gamma power under hypnotic suggestion and an almost significant decrease under neutral hypnosis were observed, compared to post-hypnosis. Anteroposterior power distribution remained stable over all conditions. The results are discussed and compared to earlier studies, which report heterogenous findings. Elsevier 2021-04-29 /pmc/articles/PMC8102752/ /pubmed/33997402 http://dx.doi.org/10.1016/j.heliyon.2021.e06871 Text en © 2021 The Author(s) https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Research Article Hiltunen, Seppo Karevaara, Maria Virta, Maarit Makkonen, Tommi Kallio, Sakari Paavilainen, Petri No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects |
title | No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects |
title_full | No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects |
title_fullStr | No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects |
title_full_unstemmed | No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects |
title_short | No evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects |
title_sort | no evidence for theta power as a marker of hypnotic state in highly hypnotizable subjects |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8102752/ https://www.ncbi.nlm.nih.gov/pubmed/33997402 http://dx.doi.org/10.1016/j.heliyon.2021.e06871 |
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