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[Functional hemispheric arousal and egocentric reference. An experimental study in 20 normal subjects]
P Gras1, M E Virat-Brassaud, A Graule
1Service de Neurologie, CHU Dijon.
Revue Neurologique
|January 1, 1993
Summary
Hemispheric arousal influences spatial reference. Cognitive tasks activating either the right or left hemisphere shifted the subjective egocentric reference to the contralateral space in healthy volunteers.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Spatial Cognition
Context:
- Understanding the brain's spatial processing is crucial.
- Hemispheric specialization plays a key role in cognitive functions.
- Egocentric reference frames are fundamental for navigation and interaction.
Purpose:
- To investigate how right versus left hemispheric functional arousal affects the subjective egocentric reference frame.
- To compare the spatial designation of the egocentric reference during distinct hemispheric activations.
Summary:
- Twenty right-handed healthy volunteers performed cognitive tasks targeting either the right or left hemisphere.
- The egocentric reference location significantly differed based on which hemisphere was aroused.
- Hemispheric arousal induced a contralateral displacement of the subjective egocentric reference.
Impact:
- Findings provide insights into the neural mechanisms underlying spatial representation.
- Results may inform future research on hemineglect syndrome.
- Suggests potential for novel neurophysiological explorations of spatial awareness.