Consolidation deficits in traumatic brain injury: The core and residual verbal memory defect |
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Authors: | Rodney D. Vanderploeg Alison J. Donnell Heather G. Belanger Glenn Curtiss |
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Affiliation: | 1. Department of Mental Health and Behavioral Sciences, James A. Haley VA, Tampa, FL, USA;2. HSR&3. D/RR&4. D Center of Excellence: Maximizing Rehabilitation Outcomes, James A. Haley Veterans Hospital, Tampa, FL, USA;5. Department of Psychology, University of South Florida, Tampa, FL, USA;6. Department of Psychiatry and Behavioral Neurosciences, University of South Florida, Tampa, FL, USA;7. Defense and Veterans Brain Injury Center, Tampa, FL, USA |
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Abstract: | While memory deficits are consistently found to be a salient problem in individuals with moderate to severe traumatic brain injury (TBI), the specific memory processes (i.e., encoding, consolidation, and retrieval) underlying the verbal memory deficit are disputed in the literature. The current study evaluated the recovery of these verbal memory processes over time. A TBI patient group evaluated acutely after the injury (baseline) and again at 6 months and 1 year post injury was compared to a demographically similar control group evaluated only once. The current results replicated previous findings in support of an impaired consolidation hypothesis as the primary deficit underlying memory impairment in TBI. These deficits are reflected in relatively more rapid forgetting through 1 year post injury and relatively less proactive interference up to 6 months post injury. |
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Keywords: | Traumatic brain injury Memory Neuropsychological tests Closed head injury Longitudinal studies Veterans health. |
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