The role of temporal lobe and orbitofrontal cortices in olfactory memory function

Differences in verbal and nonverbal olfactory identification and recognition were examined among three groups with brain impairment. A left cerebrovascular accident (LCVA) group, a right CVA (RCVA) group, and a traumatic brain injury (TBI) group were compared with two nonimpaired age-matched compari...

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Bibliographic Details
Published in:Archives of clinical neuropsychology 2002-05, Vol.17 (4), p.305-318
Main Authors: Savage, Robert, Combs, Dennis R, Pinkston, James B, Advokat, Claire, Gouvier, Wm.Drew
Format: Article
Language:English
Subjects:
Adult and adolescent clinical studies
Biological and medical sciences
Cerebrovascular accident (CVA)
Medical sciences
Olfaction
Olfactory identification
Organic mental disorders. Neuropsychology
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Traumatic brain injury (TBI)
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Summary:Differences in verbal and nonverbal olfactory identification and recognition were examined among three groups with brain impairment. A left cerebrovascular accident (LCVA) group, a right CVA (RCVA) group, and a traumatic brain injury (TBI) group were compared with two nonimpaired age-matched comparison groups on olfaction identification and recognition abilities. Odors were presented to the left and right nostrils, which maximized hemispheric differences in olfactory processing. Results showed that persons with LCVA demonstrated the greatest impairment on the verbal identification of odors, while persons with RCVA showed the most impairment on the nonverbal identification of odors. Persons with TBI showed an inconsistent impairment across both verbal and nonverbal odor identification tasks. Odor recognition was impaired in both CVA groups as well. In contrast, persons with TBI performed better on the delayed odor recognition tasks. Results are discussed in relation to hemispheric differences in processing olfactory information.
ISSN:0887-6177
1873-5843
DOI:10.1016/S0887-6177(01)00114-7