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© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Hypnotic phenomena exhibit significant inter-individual variability, with some individuals consistently demonstrating efficient responses to hypnotic suggestions, while others show limited susceptibility. Recent neurophysiological studies have added to a growing body of research that shows variability in hypnotic susceptibility is linked to distinct neural characteristics. Building on this foundation, our previous work identified that individuals with high and low hypnotic susceptibility can be differentiated based on the arrhythmic activity observed in resting-state electrophysiology (rs-EEG) outside of hypnosis. However, because previous work has largely focused on mean spectral characteristics, our understanding of the variability over time of these features, and how they relate to hypnotic susceptibility, is still limited. Here we address this gap using a time-resolved assessment of rhythmic alpha peaks and arrhythmic components of the EEG spectrum both prior to and following hypnotic induction. Using multivariate pattern classification, we investigated whether these neural features differ between individuals with high and low susceptibility to hypnosis. Specifically, we used multivariate pattern classification to investigate whether these non-stationary neural features could distinguish between individuals with high and low susceptibility to hypnosis before and after a hypnotic induction. Our analytical approach focused on time-resolved spectral decomposition to capture the intricate dynamics of neural oscillations and their non-oscillatory counterpart, as well as Lempel–Ziv complexity. Our results show that variations in the alpha center frequency are indicative of hypnotic susceptibility, but this discrimination is only evident during hypnosis. Highly hypnotic-susceptible individuals exhibit higher variability in alpha peak center frequency. These findings underscore how dynamic changes in neural states related to alpha peak frequency represent a central neurophysiological feature of hypnosis and hypnotic susceptibility.

Details

Title
Ongoing Dynamics of Peak Alpha Frequency Characterize Hypnotic Induction in Highly Hypnotic-Susceptible Individuals
Author
Landry, Mathieu 1 ; da Silva Castanheira, Jason 2 ; Rousseaux, Floriane 3 ; Rainville, Pierre 4   VIAFID ORCID Logo  ; Ogez, David 5 ; Jerbi, Karim 6 

 Département de Psychologie, Université du Québec à Trois-Rivières, Trois-Rivières, QC G9A 5H7, Canada 
 Department of Experimental Psychology, University College London, London WC1E 6BT, UK; [email protected] 
 Centre de Recherche Hôpital Maisonneuve-Rosemont, Montreal, QC H1T 2M4, Canada; [email protected] (F.R.); [email protected] (D.O.) 
 Départment de Stomatologie, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC H3T 1J4, Canada; [email protected]; Centre de Recherche de l’Institut Universitaire de Gériatrie de Montréal (CRIUGM), Université de Montréal, Montréal, QC H3W 1W6, Canada 
 Centre de Recherche Hôpital Maisonneuve-Rosemont, Montreal, QC H1T 2M4, Canada; [email protected] (F.R.); [email protected] (D.O.); Département d’Anesthésiologie et de Médecine de la Douleur, Université de Montréal, Montreal, QC H3C 3J7, Canada 
 Département de Psychologie, Université de Montréal, Montreal, QC H3C 3J7, Canada; [email protected]; MILA-Quebec Artificial Intelligence Institute, Montreal, QC H2S 3H1, Canada; UNIQUE Center (Quebec Neuro-AI Research Center), Montreal, QC H3T 1P1, Canada 
First page
883
Publication year
2024
Publication date
2024
Publisher
MDPI AG
e-ISSN
20763425
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3110384875
Copyright
© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.