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Mean (±standard error of the mean) time (sec) maintaining balance on an elevated narrow beam before and after TBI or sham injury (*p≤0.0009 versus TBI+STD+vehicle; **p≤0.001 versus all TBI groups). No other group comparisons were significant (p≤0.47; TBI, traumatic brain injury; EE, environmental enrichment; STD, standard environment).
