Author:
Buchanan Tony W.,Tranel Daniel,Adolphs Ralph
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.
Publisher
Cold Spring Harbor Laboratory
Subject
Cellular and Molecular Neuroscience,Cognitive Neuroscience,Neuropsychology and Physiological Psychology
Cited by
53 articles.
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