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Related Concept Videos

Altered States of Awareness01:06

Altered States of Awareness

Altered states of consciousness represent significant deviations from one's normal mental state. These deviations can range from subtle changes in awareness to profound transformations in perception, thought processes, and sensory experiences. Altered states of consciousness can be triggered by various factors, including drug use, meditation, hypnosis, illness, or even intense fatigue.
The ingestion of substances like stimulants or hallucinogens leads to chemical alterations in the brain that...

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Analysis of electrophysiological state patterns and changes during hypnosis induction.

Thilo Hinterberger1, Julian Schoner, Ulrike Halsband

  • 1Institut für Umweltmedizin und Krankenhaushygiene, Universitätsklinikum Freiburg, Breisacher Strasse 115 b, Freiburg, Germany. thilo.hinterberger@uniklinik-freiburg.de

The International Journal of Clinical and Experimental Hypnosis
|March 11, 2011
PubMed
Summary
This summary is machine-generated.

Hypnosis involves guided changes in consciousness. This study used EEG to show distinct physiological shifts correlating with hypnotic instructions, demonstrating measurable brain activity changes during hypnosis.

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Area of Science:

  • Neuroscience
  • Psychology

Background:

  • Hypnosis is understood as a guided induction of varied consciousness states.
  • Electrophysiological correlates of hypnotic states are not fully understood.

Purpose of the Study:

  • To analyze electrophysiological changes during hypnosis.
  • To correlate physiological state shifts with specific hypnotic instructions.

Main Methods:

  • Time-series analysis of 64-channel electroencephalography (EEG).
  • Recording of peripheral physiological measures.
  • Utilized data from one highly hypnotizable subject.

Main Results:

  • Significant EEG state changes synchronized with hypnotic induction instructions.
  • Observed sensorimotor desynchronization in the right hemisphere during left arm levitation.
  • Detected a significant increase in broadband activity during trance induction, suggesting a deep hypnotic state.

Conclusions:

  • Physiological state changes are detectable during hypnosis.
  • EEG can visualize electrophysiological correlates of altered awareness and cognition during hypnosis.
  • Demonstrates objective, measurable changes in brain activity corresponding to hypnotic suggestions.