The fundamental role of memory in olfactory perception

Donald A. Wilson*, Richard J. Stevenson

*Corresponding author for this work

Research output: Contribution to journalReview article

190 Citations (Scopus)


Current emphasis on odorant physiochemical features as the basis for perception largely ignores the synthetic and experience-dependent nature of olfaction. Olfaction is synthetic, as mammals have only limited ability to identify elements within even simple odor mixtures. Furthermore, olfaction is experience-bound, as exposure alone can significantly affect the extent to which stimuli can be discriminated. We propose that early analytical processing of odors is inaccessible at the behavioral level and that all odors are initially encoded as 'objects' in the piriform cortex. Moreover, we suggest that odor perception is wholly dependent on the integrity of this memory system and that its loss severely impairs normal perception.

Original languageEnglish
Pages (from-to)243-247
Number of pages5
JournalTrends in Neurosciences
Issue number5
Publication statusPublished - 1 May 2003

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