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Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
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Attention maps in the brain.

David C Somers1,2, Summer L Sheremata3

  • 1Department of Psychology, Boston University, Boston, MA, USA.

Wiley Interdisciplinary Reviews. Cognitive Science
|August 5, 2014
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Summary
This summary is machine-generated.

Spatial attention and visual short-term memory (VSTM) rely on numerous cortical maps. The right hemisphere shows unique VSTM and attention mapping across the entire visual field under high cognitive load.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Visual Perception

Background:

  • The brain contains over 20 distinct cerebral cortical areas with spatial map representations of the visual field, known as retinotopic or visuotopic maps.
  • These maps are found in the occipital, parietal, temporal, and frontal lobes and are crucial for processing visual information.

Purpose of the Study:

  • To explore how visuospatial attention and visual short-term memory (VSTM) interact with these cortical maps.
  • To investigate the hemispheric asymmetries in spatial representation during demanding cognitive tasks.

Main Methods:

  • The study reviews existing research on visuotopic maps and their role in attention and VSTM.
  • It analyzes findings related to hemispheric specialization, particularly in the parietal lobe.

Main Results:

  • Spatial attention modulates responses in early visual areas and supports spatial indexing in higher-order cortex.
  • These maps are fundamental for VSTM representations.
  • A significant hemispheric asymmetry emerges: right parietal maps process the entire visual field for attention and VSTM under high cognitive load, unlike the contralateral processing in other areas.

Conclusions:

  • Visuotopic maps are fundamental for visuospatial attention and VSTM.
  • The right hemisphere's ability to map the entire visual field has implications for understanding conditions like hemispatial neglect.
  • A dynamic network model best explains these representational processes in neglect.