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Aging decreases auditory event-related potentials to unexpected stimuli in humans
Authors:R T Knight
Affiliation:1. Department of Electrical-Electronic Engineering, Bursa Technical University, 16190, Bursa, Turkey;2. University of Eastern Finland, FI-80101, Joensuu, Finland;1. Psychology Department, University of California – Davis, Davis, CA, USA;2. California National Primate Research Center, University of California – Davis, Davis, CA, USA;1. Department of Vertebrate Zoology, Faculty of Biology, Lomonosov Moscow State University, Vorobievy Gory, 1/12, Moscow, 119991, Russia;2. Medicobiologic Faculty, Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, Moscow, 117997, Russia;3. Department of Reproduction Management, Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Str., 17, 10315, Berlin, Germany;4. Ecocenter “Djeiran”, Bukhara, 200700, Republic of Uzbekistan;5. Scientific Research Department, Moscow Zoo, B. Gruzinskaya, 1, Moscow, 123242, Russia;1. Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, Universitätsstrasse. 2, 45117 Essen, Germany;2. Department of Game Management and Wildlife Biology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague 6, Czech Republic;3. Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, United States of America;4. Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), 1030 Vienna, Austria
Abstract:A P300 event-related potential (P3a) was recorded to unexpected, deviant auditory stimuli requiring no behavioral response. This brain potential underwent systematic latency prolongation and amplitude decrease with advancing age. The age-related changes paralleled those of the P300 (P3b) recorded in target detection tasks. These results provide physiological evidence of a decremented CNS response to unexpected stimuli with aging.
Keywords:
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