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Visual perception is dependent on visuospatial working memory and thus on the posterior parietal cortex.
1ImpAct team, Lyon Neuroscience Research Center, Inserm U1028, CNRS-UMR5292, 69676 Bron, France; Lyon 1 University, 69373 Bron, France; Hospices Civils de Lyon, Neuro-immersion and Mouvement et Handicap, 69676 Bron, France.
Annals of Physical and Rehabilitation Medicine
|March 2, 2016
Summary
Visual perception relies on visuospatial working memory for integrating visual elements. The right posterior parietal cortex is crucial, with distinct areas for attention and spatiotemporal integration.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurobiology
Background:
- Visual perception is an active process, not passive reception of information.
- Visuospatial working memory is essential for integrating perceived elements during visual exploration.
- Understanding the neural basis of visuospatial working memory is key to understanding visual perception.
Purpose of the Study:
- To explain the dependency of visual perception on visuospatial working memory.
- To investigate the role of the right posterior parietal cortex in visuospatial working memory.
- To explore potential dissociations within the posterior parietal cortex for attention and spatiotemporal integration.
Main Methods:
- Review of neuropsychological data.
- Analysis of transcranial magnetic stimulation (TMS) studies.
- Examination of neuroimaging findings.
Main Results:
- The posterior parietal cortex of the right hemisphere plays a specific role in visuospatial working memory.
- Neuropsychological data suggest distinct neural substrates within the posterior parietal cortex.
- The superior parietal lobules may be involved in attentional deployment, while the right inferior parietal lobule is implicated in spatiotemporal integration.
Conclusions:
- Visual perception is intricately linked to visuospatial working memory.
- The right posterior parietal cortex is a critical hub for visuospatial working memory.
- Functional specialization exists within the posterior parietal cortex for different aspects of spatial processing.
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