Fig. 4.

Mean (± S.E.M.) percentage of time spent in the target quadrant (i.e., where platform was previously located) following a single probe trial 19 days after cortical impact or sham injury. All TBI groups, regardless of treatment or continuous or intermittent administration, were significantly impaired relative to the SHAM controls [**p < 0.05]. No other comparisons were significant. The dotted line represents performance at the chance level (25%).