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Profound amnesia and confabulation following traumatic brain injury
J A Demery1, R E Hanlon, R M Bauer
1Department of Clinical and Health Psychology, University of Florida Health Sciences Center, Gainesville, FL 32610-0165, USA. jdemery@ufl.edu
Neurocase
|September 15, 2001
Summary
Severe traumatic brain injury can cause lasting amnesia and confabulation. This case highlights persistent memory deficits and confabulation long after the initial injury, even with good cognitive abilities.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurology
Background:
- Amnesia and confabulation are known sequelae of conditions like aneurysmal hemorrhage, Korsakoff's syndrome, and Alzheimer's disease.
- Limited research exists on the persistence of these symptoms after traumatic brain injury (TBI).
Observation:
- A 43-year-old male (JL) presented with severe, persistent anterograde amnesia and provoked confabulation post-TBI.
- Neuropsychological testing revealed severe anterograde amnesia and confabulation at 7 weeks and 9.5 months post-injury.
- Despite superior non-verbal intelligence and attention, memory deficits persisted.
Findings:
- The case demonstrates that anterograde amnesia and provoked confabulation can persist into the chronic recovery phase after severe TBI.
- Imaging revealed bilateral temporal lobe hypodensities (L>R) and left ventrolateral frontal lobe pathology.
- Findings support the necessity of both medial temporal and ventral frontal lobe damage for the amnestic-confabulatory syndrome.
Implications:
- This case underscores the potential for long-term cognitive impairments, specifically amnesia and confabulation, following TBI.
- It emphasizes the critical role of combined temporal and frontal lobe integrity in memory function.
- Highlights the need for comprehensive, long-term neuropsychological assessment and rehabilitation strategies for TBI survivors.