Normal aging and odor intensity effects on the olfactory event-related potential

Author(s): Geisler, M. W., Polich, J., Murphy, C.

Journal/Book: Int J Psychophysiol. 1999; 32: PO Box 211, 1000 AE Amsterdam, Netherlands. Elsevier Science Bv. 205-214.

Abstract: Olfactory event-related potentials (OERPs) were recorded in 14 young and 14 older adults, with odor strength of isoamyl acetate manipulated to assess olfactory stimulus intensity. Young participants produced significantly larger N1/P2, N2/P3 amplitudes and shorter N1, P2 and N2 latencies than older participants. Medium- and high-odor concentrations elicited significantly shorter P2 and N2 latencies than the lowest concentration for both age groups. Odor concentration appears to affect the speed of olfactory stimulus information processing regardless of age.

Note: Article Murphy C, UCSD, SDSU, Joint Doctoral Program, 6363 Alvarado Ct, Suite 101, San Diego,CA 92120 USA

Keyword(s): age; odor intensity; olfactory event-related potential; OERP; olfactory stimulus; concentration; AGE-RELATED-CHANGES; EVOKED-POTENTIALS; GLUCOSE-UTILIZATION; RECOGNITION MEMORY; ALZHEIMERS-DISEASE; AUDITORY-STIMULI; BRAIN; P300; DYSFUNCTION; YOUNG

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