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Related Experiment Video

Updated: May 25, 2026

Simultaneous Recording of Electroretinography and Visual Evoked Potentials in Anesthetized Rats
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Simultaneous Recording of Electroretinography and Visual Evoked Potentials in Anesthetized Rats

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Visual ERP P3 amplitude and latency in standalone and embedded visual processing task.

Jussi Korpela1, Minna Huotilainen

  • 1Brain Work Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland. jussi.korpela@ttl.fi

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|January 19, 2012
PubMed
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External working memory load impacts visual processing. High memory demands increased reaction times and P3 latency, suggesting cognitive load affects visual event-related potentials (ERPs).

Area of Science:

  • Cognitive Neuroscience
  • Psychology
  • Neuroscience

Background:

  • Event-related potentials (ERPs) offer insights into neural processing.
  • Working memory plays a crucial role in cognitive tasks.
  • Understanding cognitive load's impact on visual processing is vital.

Purpose of the Study:

  • To investigate how external working memory load affects visual processing.
  • To examine the influence of cognitive load on event-related potentials (ERPs), specifically P3 amplitude and latency.
  • To determine the relationship between reaction time and P3 characteristics under varying memory loads.

Main Methods:

  • Ten adult participants underwent electroencephalography (EEG) during a visual processing task.
  • The visual task was performed under two conditions: no external memory load and high external memory load.

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Last Updated: May 25, 2026

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Simultaneous Recording of Electroretinography and Visual Evoked Potentials in Anesthetized Rats

Published on: July 1, 2016

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns
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Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns

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Event-related Potentials During Target-response Tasks to Study Cognitive Processes of Upper Limb Use in Children with Unilateral Cerebral Palsy
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Event-related Potentials During Target-response Tasks to Study Cognitive Processes of Upper Limb Use in Children with Unilateral Cerebral Palsy

Published on: January 11, 2016

  • Event-related potentials (ERPs), reaction times (RTs), and P3 component characteristics were recorded and analyzed.

    • Main Results:

    • High working memory load significantly increased reaction time (RT) for the visual task.
    • P3 latency also increased under high memory load conditions.
    • A correlation between P3 amplitude and reaction time was observed exclusively under the high memory load condition.

    Conclusions:

    • External working memory load demonstrably affects visual processing.
    • The P3 component of visual event-related potentials (ERPs) is sensitive to concurrent cognitive demands.
    • Findings suggest that cognitive load modulates the neural mechanisms underlying visual perception and response.