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A specific role for the human amygdala in olfactory memory
Journal article   Open access   Peer reviewed

A specific role for the human amygdala in olfactory memory

Tony W Buchanan, Daniel Tranel and Ralph Adolphs
Learning & memory (Cold Spring Harbor, N.Y.), Vol.10(5), pp.319-325
09/2003
DOI: 10.1101/lm.62303
PMCID: PMC217997
PMID: 14557604
url
https://doi.org/10.1101/lm.62303View
Published (Version of record) Open Access

Abstract

The medial temporal lobe is known to play a role in the processing of olfaction and memory. The specific contribution of the human amygdala to memory for odors has not been addressed, however. The role of this region in memory for odors was assessed in patients with unilateral amygdala damage due to temporal lobectomy (n = 20; 11 left, 9 right), one patient with selective bilateral amygdala damage, and in 20 age-matched normal controls. Fifteen odors were presented, followed 1 h later by an odor-name matching test and an odor-odor recognition test. Signal detection analyses showed that both unilateral groups were impaired in their memory for matching odors with names, these patients were not significantly impaired on odor-odor recognition. Bilateral amygdala damage resulted in severe impairment in both odor-name matching as well as in odor-odor recognition memory. Importantly, none of the patients were impaired on an auditory verbal learning task, suggesting that these findings reflect a specific impairment in olfactory memory, and not merely a more general memory deficit. Taken together, the data provide neuropsychological evidence that the human amygdala is essential for olfactory memory.
 Amygdala - physiopathology Acoustic Stimulation Humans Middle Aged Anterior Temporal Lobectomy Male Case-Control Studies Odorants Recognition (Psychology) - physiology Amygdala - surgery Learning - physiology Smell - physiology Adult Female Amygdala - physiology Memory - physiology

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