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Motion-onset VEPs reflect long maturation and early aging of visual motion-processing system

Motion-onset VEPs reflect long maturation and early aging of visual motion-processing system

Vision Research 46(4): 536-544

Pattern-reversal and motion-onset visual evoked potentials (VEPs) were simultaneously tested in a group of 70 healthy subjects between the ages of 6-60 years to verify suspected differences in maturation and aging dynamics of the pattern and motion processing subsystems of the visual pathway. The motion-onset VEPs displayed dramatic configuration development and shortening of latencies up to 18 years of age (correl. coeff. -0.85; p < 0.001) and systematic prolongation from about 20 years of age (correl. coeff. 0.70; p < 0.001). This confirms long-lasting maturation of the magnocellular system and/or motion processing cortex and their early age related changes. Less significant changes of pattern-reversal VEPs in the tested age range can be interpreted as a sign of early maturation of the parvocellular system and its enhanced functional endurance in the elderly.

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Accession: 012329186

Download citation: RISBibTeXText

PMID: 16083936

DOI: 10.1016/j.visres.2005.06.024

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