Phenomena and Processes

P300 Event-Related Potentials

A late-appearing component of the event-related potential. P300 stands for a positive deflection in the event-related voltage potential at 300 millisecond poststimulus. Its amplitude increases with unpredictable, unlikely, or highly significant stimuli and thereby constitutes an index of mental activity. (From Campbell, Psychiatric Dictionary, 6th ed)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A late-appearing component of the event-related potential. P300 stands for a positive deflection in the event-related voltage potential at 300 millisecond poststimulus. Its amplitude increases with unpredictable, unlikely, or highly significant stimuli and thereby constitutes an index of mental activity. (From Campbell, Psychiatric Dictionary, 6th ed)

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

26 entry terms
  • Event-Related Potentials, P3
  • Event-Related Potentials, P300
  • Evoked Potentials, P300 Component
  • P3 Event Related Potential
  • P3 Event-Related Potentials
  • P300 Component
  • P300 Event-Related Potential
  • Event Related Potentials, P3
  • Event Related Potentials, P300
  • Event-Related Potential, P3
  • Event-Related Potential, P300
  • P3 Event Related Potentials
  • P3 Event-Related Potential
  • P300 Components
  • P300 Event Related Potential
  • P300 Event Related Potentials
  • P3a Event-Related Potentials
  • P3b Event-Related Potentials
  • Event-Related Potential, P3a
  • Event-Related Potential, P3b
  • Event-Related Potentials, P3a
  • Event-Related Potentials, P3b
  • P3a Event Related Potentials
  • P3a Event-Related Potential
  • P3b Event Related Potentials
  • P3b Event-Related Potential

MeSH Record

Aspects Covered

5 allowable subheadings

Indexed with the subheadings drug effects, genetics, immunology, physiology, radiation effects.

MeSH Record

History Note

96

MeSH Record

Previous Indexing

  • Evoked Potentials (1975-1995)
  • specific Evoked Potentials (1980-1995)

MeSH Hierarchy

Tree Numbers

  1. G07.265.216.500w.350w
  2. G11.561.200.500w.350w

AMA Style

References

  1. National Library of Medicine. P300 Event-Related Potentials. Medical Subject Headings (MeSH). 2026. Unique ID D018913. http://id.nlm.nih.gov/mesh/2026/D018913
  2. P300 Event-Related Potentials. In: Wikipedia. https://en.wikipedia.org/wiki/P300_(neuroscience)
  3. P300 Event-Related Potentials. In: Wikidata. https://www.wikidata.org/wiki/Q3136081