Cortex functional connectivity as a neurophysiological correlate of hypnosis: An EEG case study

Cortex functional connectivity associated with hypnosis was investigated in a single highly hypnotizable subject in a normal baseline condition and under neutral hypnosis during two sessions separated by a year. After the hypnotic induction, but without further suggestions as compared to the baselin...

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Bibliographic Details
Published in:Neuropsychologia 2007-01, Vol.45 (7), p.1452-1462
Main Authors: Fingelkurts, Andrew A., Fingelkurts, Alexander A., Kallio, Sakari, Revonsuo, Antti
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Brain Mapping
Cerebral Cortex - physiology
Consciousness
EEG segmentation
Electroencephalography
Female
Frequency bands
Humans
Hypnosis
Hypnotic virtuoso
Hypnotizability
Local/remote synchronization
Medical sciences
Metastability
Nerve Net - physiology
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Relaxation. Biofeedback. Hypnosis. Selfregulation. Meditation
Structural (operational) synchrony
Suggestibility
Treatments
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Summary:Cortex functional connectivity associated with hypnosis was investigated in a single highly hypnotizable subject in a normal baseline condition and under neutral hypnosis during two sessions separated by a year. After the hypnotic induction, but without further suggestions as compared to the baseline condition, all studied parameters of local and remote functional connectivity were significantly changed. The significant differences between hypnosis and the baseline condition were observable (to different extent) in five studied independent frequency bands (delta, theta, alpha, beta, and gamma). The results were consistent and stable after 1 year. Based on these findings we conclude that alteration in functional connectivity of the brain may be regarded as a neuronal correlate of hypnosis (at least in very highly hypnotizable subjects) in which separate cognitive modules and subsystems may be temporarily incapable of communicating with each other normally.
ISSN:0028-3932
1873-3514
1873-3514
DOI:10.1016/j.neuropsychologia.2006.11.018