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Neurology 2001;57:519-521
© 2001 American Academy of Neurology
Brief Communications

Agnosia for familiar faces and odors in a patient with right temporal lobe dysfunction

Mario F. Mendez, MD, PhD; and Mehdi Ghajarnia, BS

Departments of Neurology and Psychiatry & Biobehavioral Sciences, University of California at Los Angeles, VA Greater Los Angeles Healthcare Center.

Address correspondence and reprint requests to Dr. M.F. Mendez, Neurobehavior Unit (116AF), VA Greater Los Angeles Healthcare Center, 11301 Wilshire Blvd., Los Angeles, CA 90073; e-mail mmendez{at}UCLA.edu

The authors studied a 53-year-old man with progressive prosopagnosia and inability to recognize his favorite foods by smell. He could not identify pictures of familiar faces, but he could match unfamiliar faces and distinguish them from familiar ones. He could not identify familiar odors, but he could detect them and could perceive them as pleasant or familiar. Neuroimaging revealed temporal lobe changes, especially on the right. Right temporal lesions may produce face and odor agnosia by preventing perceptual familiarity units from accessing semantic associations.




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