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A common mechanism in verb and noun naming deficits in Alzheimer’s patients |
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| Authors: | Amit Almor Justin M Aronoff Maryellen C MacDonald Laura M Gonnerman Daniel Kempler Houri Hintiryan UnJa L Hayes Sudha Arunachalam Elaine S Andersen |
| Institution: | a University of South Carolina, Columbia, SC 29208, United States;b University of Southern California, Los Angeles, CA 90089, United States;c University of Wisconsin-Madison, Madison, WI 53706, United States;d Lehigh University, Bethlehem, PA 18015, United States;e Emerson College, Boston, MA 02116, United States;f University of Massachusetts, Amherst, MA 01003, United States;g Northwestern University, Evanston, IL 60208, United States |
| Abstract: | We tested the ability of Alzheimer’s patients and elderly controls to name living and non-living nouns, and manner and instrument verbs. Patients’ error patterns and relative performance with different categories showed evidence of graceful degradation for both nouns and verbs, with particular domain-specific impairments for living nouns and instrument verbs. Our results support feature-based, semantic representations for nouns and verbs and support the role of inter-correlated features in noun impairment, and the role of noun knowledge in instrument verb impairment. |
| Keywords: | Nouns Verbs Alzheimer’ s Semantic impairments Category specific impairments Picture naming |
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