Brain injury : [BI]
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Brain injury : [BI] · Jun 2007
ReviewEvaluation of models that predict short-term outcome after traumatic brain injury.
This study aimed to identify models that predicted the short-term outcome after traumatic brain injury (TBI) from the literature and to evaluate their clinical significance. ⋯ Most of the models included in this study have a good discriminatory power while lacking sufficient calibration. However, they all predict with relative accuracy at the level of individuals. Therefore, current models can be used to predict the survival rate of individual patients and may be useful to inform patients and relatives about the likelihood of a beneficial outcome.
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Brain injury : [BI] · Jun 2007
Long-term electrophysiological changes in athletes with a history of multiple concussions.
This event-related potentials study investigated the long-term effects associated with a history of one or multiple concussions on the N2pc and P3 components using a visual search oddball paradigm. ⋯ This finding suggests that the multi-concussed athletes group showed long-lasting P3 amplitude suppression when compared with single-concussion or non-concussed athletes despite equivalent neuropsychological test scores and post-concussion symptoms self-reports. This pattern of results is important because it shows that 'old' concussions do not cause general or ubiquitous electrophysiological suppression. The specificity of the long-term effects of previous concussions to the P3, along with an intact N2pc response, suggests that further work may allow one to pinpoint the cognitive system that is specifically affected by multiple concussions.