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  • Title: Olfactory event-related potentials: older males demonstrate the greatest deficits.
    Author: Morgan CD, Covington JW, Geisler MW, Polich J, Murphy C.
    Journal: Electroencephalogr Clin Neurophysiol; 1997 Jul; 104(4):351-8. PubMed ID: 9246073.
    Abstract:
    Olfactory event-related potentials (OERPs) were recorded monopolarly at the Fz, Cz, and Pz electrode sites in 16 young adults (8M/8F) and 16 older adults (8M/8F) with inter-stimulus intervals (ISI) of 45, 60 and 90 s using amyl acetate as the odorant stimulus. N1, P2, and N2 peak amplitudes and latencies were measured. Young participants demonstrated significantly shorter peak latencies than older participants. Older males demonstrated significantly smaller peak amplitudes than the other participant groups. Peak amplitudes also increased with longer ISIs for older males. The OERP is compared to traditional olfactory psychophysical testing.
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