alexa An EEG severity index of traumatic brain injury.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Thatcher RW, North DM, Curtin RT, Walker RA, Biver CJ,

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Abstract EEG spectral analyses were conducted from 19 scalp locations for patients with mild (n=40), moderate (n=25), and severe (n=43) traumatic brain injury (TBI), 15 days to 4 years after injury. Severity of TBI was judged by emergency hospital admission records (Glasgow Coma Score and duration of coma and amnesia). Highest-loading EEG variables on each factor that differed significantly between severe and mild TBI by univariate t-test were entered into a multivariate discriminant analysis, yielding 16 variables. Discriminant analysis between mild and severe TBI groups showed classification accuracy of 96.39\%, sensitivity 95.45\%, and specificity 97.44\%. The EEG discriminant score also measured intermediate severity in moderate TBI patients. Results were cross-validated in 503 VA patients. Significant correlations between EEG discriminant scores, emergency admission measures, and post-trauma neuropsychological test scores validated the discriminant function as an index of severity of injury and a classifier of the extremes of severity. This article was published in J Neuropsychiatry Clin Neurosci and referenced in Journal of Addiction Research & Therapy

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