Figure 2.

Memory retention performance dependent on group. Note the significant increase in performance after 26 weeks of resveratrol (triangles, black, n = 23) compared with placebo (circles, gray, n = 23; p = 0.038). Memory retention was defined as the number of correct words immediately recalled after the fifth learning trial of the auditory verbal learning task subtracted from those correctly recalled after the 30 min delay. Raw scores were standardized into z-scores and multiplied by −1 to create positive relations. Triangles/circles indicate mean retention z-scores dependent on group and time point; error bars indicate SE. *p < 0.05 according to paired t test of differences between baseline and follow-up in memory scores between the resveratrol and placebo group-matched pairs.