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Cortex functional connectivity as a neurophysiological correlate of hypnosis: an EEG case study
Andrew A Fingelkurts1, Alexander A Fingelkurts, Sakari Kallio
1BM-SCIENCE - Brain and Mind Technologies Research Centre, P.O. Box 77, FI-02601, Espoo, Finland. andrew.fingelkurts@bm-science.com
Neuropsychologia
|January 9, 2007
Summary
Hypnosis significantly alters brain functional connectivity in highly hypnotizable individuals. These changes in neural communication patterns were consistent even after one year, suggesting a stable neuronal correlate for hypnosis.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychology
Background:
- Investigating the neural underpinnings of hypnosis is crucial for understanding consciousness.
- Functional connectivity analysis provides insights into brain network dynamics.
- Previous research has explored brain activity during hypnosis, but stable correlates remain elusive.
Observation:
- A single, highly hypnotizable subject was studied under baseline and neutral hypnosis conditions.
- Electroencephalography (EEG) data was analyzed for functional connectivity across multiple frequency bands.
- Two separate sessions, one year apart, ensured the stability of observed effects.
Findings:
- Significant alterations in both local and remote functional connectivity were observed during hypnosis compared to baseline.
- These changes were evident across all five studied frequency bands: delta, theta, alpha, beta, and gamma.
- The observed alterations in brain connectivity were consistent and stable over a one-year period.
Implications:
- Altered functional connectivity may represent a key neuronal correlate of hypnosis, particularly in highly hypnotizable individuals.
- Hypnosis might involve a temporary disruption in normal communication between distinct cognitive modules or subsystems.
- These findings open avenues for further research into the neurobiological basis of altered states of consciousness.
