Fig. 1.
The mean change scores are shown for each group of volunteers over four time periods, for digits forward, digits back, word recall, and word generation. Error bars indicate 1 SD. P is the repeated measured ANOVA for group × time comparisons. T15 is conducted 15 min, T40 is conducted 40 min, D1 and D3 are conducted on days 1 and 3 after baseline.