Cited by 1,012Neural and Behavioral Psychology StudiesVisual perception and processing mechanismsEEG and Brain-Computer Interfaces

Stimulus novelty, task relevance and the visual evoked potential in man

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Courchesne, Eric, Hillyard, Steven A, Galambos, Robert·1975·Electroencephalography and Clinical Neurophysiology

Abstract

Visual evoked potentials (VEPs) were recorded from normal adult subjects performing in a visual discrimination task. Subjects counted the number of presentations of the numeral 4 which was interposed rarely and randomly within a sequence of tachistoscopically flashed background stimuli (numeral 2s). Intrusive, task-irrelevant (not counted) stimuli were also interspersed rarely and randomly in the sequence of 2s; these stimuli were of two types: simples, which were easily recognizable (e.g., geometric figures), and novels, which were completely unrecognizable (i.e., complex, colorful patterns). It was found that the simples and the counted 4s evoked posteriorly distributed P3 waves (latency 380-430 msec) while the irrelevant novels evoked large, frontally distributed P3 waves (latency 360-380 msec). These large, frontal P3 waves to novels were also found to be preceded by large N2 waves (latency 278 msec). These findings indicate that "the P3" wave is not a unitary phenomenon but should be considered in terms of a family of waves, differing in their brain generators and in their psychological correlates. These late positive components are discussed in terms of task-relevance, recognition and Pavlov's "what is it" response.

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  1. Ilaider, M. , Gro I 1 , E. acid Studynka, G. Orient ierunF;-und Bereitschaftspotc,ntiale bei unerwarten Ile izen. Experimental B r ain Research, 1968, 5:45-54.
  2. Picton, 'f.IV., Ilillyard, S.A. and Galambos, It. Cortical evolved responses to or.i;-tted stimuli. In: M.N. Livanov (ed.), bIa'or Problems of [train Electrophysiolop,y. USSR Academy of Sciences, 1974:302-311.
  3. Ritter, IV., Simson, R. and Vaughn Jr., H.G. Assuciation cor- tex potentials and reaction time in auditory discrimi- nation. Electruenceph, clin. Neurophysiol., 1972, 33: 547-555.
  4. Ritter, W., Simson, R. and Vaughn Jr., N.G. Topographic analysis of task-related cerebral potent-ials. Inter- national Symposium on Cerebral Evoked Potentials in titan, ItrusseIs, in press.
  5. Roth, W.T. Auditory evoked res-ionses to unpredictable stim- uli. Psychophysiolcyy 1973, 10:125-138.
  6. IVilkinson, R.T and Ashby, S.M. Selective attention, contin- gen t_ ne ative variation and the evoked potential. Bio1. P y c h 1974, 1:167-179.

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Authors
Courchesne, E., Hillyard, S. A., & Galambos, R.
Affiliations
University of California San Diego (US)
Venue
Electroencephalography and Clinical Neurophysiology
Publisher
Elsevier BV
Published
1975-08
Volume
39
Issue
2
Pages
131-143
ISSN
0013-4694 (ISSN-L)
OpenAlex
W2021462108
Cited by
1,012
References
21
Citations by year
2026: 10 · 2025: 19 · 2024: 13 · 2023: 11 · 2022: 17 · 2021: 24 · 2020: 26 · 2019: 25 · 2018: 23 · 2017: 19 · 2016: 18 · 2015: 22 · 2014: 34 · 2013: 26 · 2012: 30
FWCI
11.01
Type
journal article
Language
en
Open access
Locations
  • Electroencephalography and Clinical Neurophysiology (publishedVersion)
  • PubMed (publishedVersion)
  • NASA STI Repository (National Aeronautics and Space Administration) (submittedVersion)
Funders
National Aeronautics and Space Administration
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
Keywords
visual evoked potentials, P3 wave, stimulus novelty, task relevance, visual discrimination, stimulus recognition, visual discrimination task
MeSH terms
Attention, Discrimination, Psychological, Electrodes, Electroencephalography, Electrooculography, Evoked Potentials, Humans, Physical Stimulation, Reaction Time, Task Performance and Analysis, Vision, Ocular

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