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[Visual evoked potentials in elderly subjects (author's transl)]

J Paty, M Gioux, P Deliac

    Revue D'Electroencephalographie Et De Neurophysiologie Clinique
    |April 1, 1980
    PubMed
    Summary
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    Visual evoked potentials (VEP) show age-related changes in older adults. Specifically, visual evoked potentials by luminance stimuli (VEPC) and contrast stimuli (VEPL) reveal altered brain responses and increased individual differences with aging.

    Area of Science:

    • Neuroscience
    • Ophthalmology
    • Gerontology

    Context:

    • Aging impacts visual processing.
    • Visual evoked potentials (VEP) are sensitive to age-related neurological changes.
    • Understanding these changes is crucial for assessing visual function in older adults.

    Purpose:

    • To investigate age-related alterations in visual evoked potentials (VEP) using both contrast (VEPL) and luminance (VEPC) stimuli.
    • To analyze changes in VEP latency, amplitude, and topographical organization in elderly individuals.
    • To explore the clinical implications of increased inter-individual variability in VEP responses due to aging.

    Summary:

    • The study examined VEPs in 28 subjects aged 65-95 years.
    • Age-related changes included increased VEPL latencies (early components) and VEPL maximum amplitude.

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  • Deterioration in left occipital responses and vertex potential changes were observed, alongside greater inter-individual differences.

    • Impact:

    • Findings highlight significant age-related modifications in visual evoked potentials.
    • Increased inter-individual differences in VEPs may serve as a biomarker for biological aging processes.
    • This research has potential clinical implications for evaluating visual system aging and neurological health in the elderly.