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Updated: May 11, 2026

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns
09:42

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Published on: May 12, 2019

Aging effects on visual evoked potentials (VEPs) for motion direction discrimination.

Voyko Kavcic1, Tim Martin, Bojan Zalar

  • 1Institute of Gerontology, Wayne State University, Detroit, MI, USA. Voykok@gmail.com

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|June 1, 2013
PubMed
Summary
This summary is machine-generated.

Older adults show slower motion perception due to changes in early visual processing stages. Electrophysiological measures reveal age-related differences in motion onset visual evoked potentials (MO-VEPs), specifically the P1 and N2 components.

Keywords:
AgingDiffusion modelMotion onset VEPsN2P1Perception of motion

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Gerontology

Background:

  • Age-related declines in motion perception are well-documented.
  • Understanding the neural and cognitive underpinnings of these declines is crucial for interventions.

Purpose of the Study:

  • To investigate the impact of aging on electrophysiological correlates of motion perception.
  • To identify specific cognitive processes affected by age using a diffusion model analysis.

Main Methods:

  • Recorded electroencephalography (EEG) during a motion direction discrimination task in younger (<55 years) and older (>55 years) adults.
  • Analyzed motion onset visual evoked potentials (MO-VEPs), specifically P1 and N2 components.
  • Applied diffusion model to response times to differentiate decision and non-decision processes.

Main Results:

  • Older adults had significantly longer response times but similar accuracy rates compared to younger adults.
  • Diffusion model analysis indicated age-related differences in non-decision time, suggesting early perceptual stage alterations.
  • Electrophysiological findings revealed age effects on P1 topographical distribution and N2 component (delayed onset, diminished amplitude) at posterior sites.
  • N2 amplitude and latency were significant predictors of age.

Conclusions:

  • Aging affects early visual processing stages in motion perception, likely within striate and extrastriate visual cortices.
  • Electrophysiological measures (MO-VEPs) and cognitive modeling provide converging evidence for age-related changes in visual processing.
  • Specific components of MO-VEPs (N2) show strong correlation with age, highlighting their potential as biomarkers for age-related visual decline.