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Related Concept Videos

Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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Related Experiment Video

Updated: May 14, 2026

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
05:36

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention

Published on: November 16, 2017

Visual attention capacity parameters covary with hemifield alignment.

Antje Kraft1, Mads Dyrholm, Claus Bundesen

  • 1Department of Neurology, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany. antje.kraft@charite.de

Neuropsychologia
|February 9, 2013
PubMed
Summary
This summary is machine-generated.

Visual processing and short-term memory capacities are not fixed. They increase when stimuli are processed across both brain hemispheres, challenging previous assumptions of constant visual attention.

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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • The Theory of Visual Attention (TVA) measures parameters like visual processing and VSTM capacity.
  • Previous research assumed these capacities are constant across trials.
  • Some studies indicated trial-by-trial variability in VSTM capacity.

Purpose of the Study:

  • To investigate the cause of trial-by-trial variability in visual attention parameters.
  • To determine if hemifield distribution of stimuli affects visual processing and VSTM capacity.
  • To re-evaluate the assumption of fixed visual attentional capacity.

Main Methods:

  • Utilized the Theory of Visual Attention (TVA) framework.
  • Analyzed visual attention parameters based on stimulus hemifield distribution.
  • Compared processing and VSTM capacities for stimuli within a single hemifield versus across both hemifields.

Main Results:

  • Visual processing capacity and VSTM capacity are significantly higher when stimuli are distributed across both hemifields.
  • Capacities are lower when stimuli are confined to a single hemifield.
  • This finding supports the hypothesis that parallel processing is more efficient across hemispheres.

Conclusions:

  • Trial-by-trial variability in visual attention is partly explained by hemifield distribution.
  • The concept of fixed visual attentional capacity needs revision to include hemifield effects.
  • Stimulus distribution across hemifields enhances visual processing and VSTM capacity.