Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Event-Related Potentials

  • Nathan D. ZaslerEmail author
  • Paul E. Kaplan
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_26

Synonyms

Auditory and visual evoked potentials; ERPs; Evoked potentials

Definition

Event-related potentials (ERPs) are time locked and stereotyped brain responses to some “event.” An event-related potential (ERP) is the measured brain electrophysiological response that is the direct result of a specific sensory, cognitive, or motor event. The stimulus can be a sound, a simple visual pattern, and a mental event or thoughts such as recognition of a specific target stimulus or the absence of a stimulus as when an increased time elapses between stimuli. The recorded brain response is a very small electrical voltage of between 1 and 100 millionths of a volt and is recorded over the scalp by a very sensitive amplifier and computer averaging equipment that can recognize it as a consistency in the seemingly random waveforms of the overlying EEG.

The response can be a singular waveform or a series of waveforms that indicate the chain of processors that respond in sequence to the stimulus as the...

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References and Readings

  1. Sur, S., & Sinha, V. K. (2009). Event-related potential: An overview. Indian Psychiatry Journal, 18(1), 70–73.CrossRefGoogle Scholar
  2. Vernet M, Bashir S, Enam S. F., et al. (2013). Electrophysiologic techniques. In N. D. Zasler, D. I. Katz, & R. Zafonte (Eds.), Brain injury medicine: Principles and practice (pp. 230–246). New York: Demos Medical.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Concussion Care Centre of Virginia, Ltd.RichmondUSA
  2. 2.Capitol Clinical NeuroscienceFolsomUSA