Visual evoked potentials in elderly subjects
Potentiels évoqués visuels chez les sujets âgés
Résumé
Study of visual evoked potentials by contrast stimuli (VEPC) and by luminance stimuli (VEPC) in 28 subjects aged between 65 and 95 years (mean age: 81.8 years).
Changes related to aging in regard to VEP involve: an increase of latencies of VEPL affecting the early components and an increase in the maximum amplitude of VEPL.
The course of EP as age progresses introduces a difference in topographical organisation with a deterioration of responses ni hte left occipital regions and a change ni potentials recorded at the vertex.
Aging would appear to cause more marked inter-individual differences which could have clinical implications by making it possible to demonstrate individual differences in the biological processes of aging.
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