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Olfactory P3 in young and older adults

Published online by Cambridge University Press:  25 September 2001

CHARLIE D. MORGAN ,
MARK W. GEISLER ,
JAMES W. COVINGTON ,
JOHN POLICH  and
CLAIRE MURPHY
CHARLIE D. MORGAN
Affiliation:
San Diego State University—University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA
MARK W. GEISLER
Affiliation:
Department of Head and Neck Surgery/Otolaryngology, University of California, School of Medicine, San Diego, CA, USA
JAMES W. COVINGTON
Affiliation:
Department of Psychology, San Diego State University, CA, USA
JOHN POLICH
Affiliation:
Department of Neuropharmacology, The Scripps Research Institute, La Jolla, CA, USA
CLAIRE MURPHY
Affiliation:
Department of Head and Neck Surgery/Otolaryngology, University of California, School of Medicine, San Diego, CA, USA Department of Psychology, San Diego State University, CA, USA
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Abstract

Olfactory event-related potentials (OERPs) were recorded monopolarly at the Fz, Cz, and Pz electrode sites in 16 young adults and 16 older adults to assess aging effects on the olfactory P3. Amyl acetate was used to elicit the OERPs, with an intertrial interval of 45 s. Young adults produced significantly larger P3 amplitudes and shorter P3 peak latencies than older adults. The olfactory P3 response appears to be sensitive to age-related changes in the olfactory system and may reflect cognitive slowing in the central nervous system.

Keywords

AgeOERPOlfactory stimulusP3Single-stimulus paradigm
Type
Research Article
Information
Psychophysiology , Volume 36 , Issue 3 , May 1999 , pp. 281 - 287
Copyright
© 1999 Society for Psychophysiological Research

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