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Visuospatial imagery in healthy individuals with different hypnotizability levels
Oriana Incognito1, Elisa Menardo2, Francesco Di Gruttola3
1Dept. of Education and Psychology, University of Florence, Italy.
Neuroscience Letters
|October 22, 2018
Summary
Individuals with high hypnotizability show superior spatial imagery skills, specifically in mental rotation tasks. This suggests a link between hypnotizability and cognitive functions involving the cerebellum and executive circuits.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Psychophysiology
Background:
- Hypnotizability is a trait linked to brain structure and function.
- Cerebellar differences are noted in individuals with varying hypnotizability.
- Cerebellar function is crucial for spatial imagery.
Purpose of the Study:
- Investigate hypnotizability-related differences in spatial imagery ability.
- Examine mental rotation performance across different hypnotizability groups.
- Differentiate cerebellar contributions from executive functions in spatial tasks.
Main Methods:
- Participants classified as high, medium, or low hypnotizable using the Stanford Hypnotic Susceptibility Scale (form A).
- Administered mental rotation task to assess spatial imagery.
- Conducted visuospatial and verbal working memory tests to evaluate executive functions.
Main Results:
- Highly hypnotizable individuals (highs) outperformed medium hypnotizability individuals (mediums) in mental rotation.
- No significant differences in visuospatial or verbal working memory were found between highs and mediums.
- Low hypnotizability individuals (lows) showed intermediate mental rotation scores.
- Cognitive strategy differences emerged, indicated by varying correlations between mental rotation and working memory across groups.
Conclusions:
- This study provides the first evidence of hypnotizability-related differences in mental rotation performance.
- Findings suggest a connection between hypnotizability and spatial imagery abilities.
- The results highlight the role of the cerebellum and executive functions in hypnotizability and spatial cognition.
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