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. 2013 Nov 13;111(3):628–640. doi: 10.1152/jn.00457.2013

Fig. 1.

Fig. 1.

A: sequence learning task. Reaction time across random (R) and sequence (S) blocks for catechol-O-methyltransferase (COMT) val158met (vm) genotype. The first (R) block is the familiarization block. The val-val (vv) group exhibited higher reaction time (P = 0.03) compared with the met-met (mm) group in the middle learning phase (S7-R8). This difference was not significant in the post hoc test on the reaction time differences across S7-R8. B: sequence learning task. Average number of errors for COMT val158met genotype. There was no significant difference between the number of errors that each genotype group made.