EEG mapping including patients with normal and altered states of hypnotic consciousness under the parameter of posthypnosis.
The International journal of neuroscience July 1989 DOI: 10.3109/00207458908987414 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational EEG study Peer reviewed |
|---|---|
| Sample size | 25 |
| Population | Hypnotized patients, described as right-handed for the hemisphere-switch finding |
| Measures | EEG spectra, EEG brain mapping |
| Topics | Altered states of consciousness |
| Key findings | The author reports that in 25 hypnotized patients, stimuli-synchronized EEG spectral changes appeared as a switch of electrical activity from the left to the right hemisphere in right-handed individuals. A later study used EEG brain mapping and extended analysis to the posthypnotic state to confirm the state of hypnosis, but no results of that study are reported here. |
Abstract
In 1985 I first reported my observations of stimuli-synchronized changes of EEG spectra occurring in 25 hypnotized patients. Electroencephalographic leads recorded separately for the left and right brain showed a switch of electrical activities from the left to the right hemisphere in right-handed persons. In the following study we changed the experimental conditions, using an EEG brain mapping method promising even more reliable information and guaranteeing the actual state of hypnosis by extending the analysis to the state of posthypnosis.