Journal
NEUROPSYCHOLOGY
Volume 19, Issue 2, Pages 233-242Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0894-4105.19.2.233
Keywords
anoxic brain injury (ABI); traumatic brain injury (TBI); brain imaging; cognitive function
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Research in neuropsychology suggests that the etiology of a neurologic injury determines the neuropathological and neuropsychological changes. This study compared neuropsychological outcome in subjects who had traumatic brain injury (TBI) with subjects who had anoxic brain injury (ABI), who were matched for age, gender, and ventricle-to-brain ratio. There were no group differences for morphologic or neuropsychological measures. Both groups exhibited impaired memory, attention, and executive function, as well as slowed mental processing speed. Intelligence Correlated with whole brain volume, and measures of memory correlated with hippocampal atrophy. There was no unique contribution of hippocampal atrophy on neuropsychological outcome between the groups. In the absence of localized lesions, the amount of neural tissue loss, rather than etiology, may be the critical factor in neuropsychological outcome.
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