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Visual Evoked Potentials

  • Living reference work entry
  • First Online:
Encyclopedia of Color Science and Technology

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Synonyms

Event Related Potential; ERP; VEP

Definition

The visual evoked potential (VEP) is a means of extracting from the spontaneous electrical activity in the brain, electrical changes that are directly related to a specific brain action. It is a means of analyzing the Electroencephalogram (EEG). The event-related information (“signal”) is extracted from the overall electrical activity (“noise”) by some form of correlation. Usually, repeated samples of EEG are triggered by a particular event (e.g., an abrupt visual change) and averaged together. Because this event causes a particular type of brain response, at a predictable time, the process of averaging these time locked responses accentuates the event-related signal and smoothes out any uncorrelated activity. By using a stimulus that only contains time-locked changes in color, the VEP can provide an indirect measure of color information processing in the brain.

Scalp-Recorded Electrical Signals from the Brain

The brain is...

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Author information

Authors and Affiliations

  1. Vision Science Centre, Manchester Royal Eye Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK

    Neil Parry

  2. Centre for Ophthalmology & Vision Sciences, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, ∎, UK

    Neil Parry

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  1. Neil Parry
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Correspondence to Neil Parry .

Editor information

Editors and Affiliations

  1. School of Design University of Leeds, Leeds, United Kingdom

    Ronnier Luo

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Parry, N. (2015). Visual Evoked Potentials. In: Luo, R. (eds) Encyclopedia of Color Science and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27851-8_107-1

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  • DOI: https://doi.org/10.1007/978-3-642-27851-8_107-1

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Online ISBN: 978-3-642-27851-8

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