Time course of spatial retention memory performances after mild TBI.

<p>Spatial retention memory was evaluated during the probe trial in the Barnes maze, performed on unoperated, sham-operated and TBI mice with (A) the percent time spent in the target sextant and (B) the distance traveled. Data were expressed as means ± S.E.M. Differences were analyzed with univariate t test in order to compare the % time spent in the target sextant to the theoretical value 16.67% (dotted line; i.e. when the mouse spent equal time within each sextant). *<i>p</i> < 0.05 <i>vs</i> sham-operated.