Category-Specific Naming Deficit for Medical Terms after Dominant Thalamic/Capsular Hemorrhage |
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| Authors: | Bruce Crosson Paul J Moberg James R Boone Leslie J Gonzalez Rothi Anastasia Raymer |
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| Institution: | aDepartment of Clinical and Health Psychology, University of Florida;bBrain–Behavior Laboratory, Department of Psychiatry, University of Pennsylvania School of Medicine;cSuncoast Medical Clinic, St. Petersburg, Florida;dAudiology and Speech Pathology Service, Veterans Administration Medical Center, Gainesville, Florida;eDepartment of Neurology, University of Florida |
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| Abstract: | Postmortem, retrograde degeneration, and electrical stimulation studies have implicated the anterior pulvinar in language processing. We examined a patient who, after a hemorrhage affecting the dominant pulvinar and internal capsule, exhibited a circumscribed anomia for medical items and conditions. No other language disturbance was noted. Five category-specific word lists, matched for word frequency, were administered in a naming-to-definition format. Results indicated that the patient exhibited a significant category-specific naming deficit for medical items and conditions compared to matched control subjects. Although medical item lists were found to differ from nonmedical item lists in imageability and abstractness, B.C.'s category-specific deficit did not seem to be caused by word frequency, concept familiarity, imageability, or abstractness. Nor could the patient's performance be explained on the basis of deficits in broader semantic classifications (i.e., animate vs inanimate or man-made vs natural). The patient was unable to retrieve medical items even when given phonemic cues for those he could not name. Findings indicate that subtotal damage in the dominant pulvinar may create category-specific deficits. |
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