Table 3.

Striatal ¹¹C‐raclopride binding potential of the feedback (FB) and paired associate (PA) groups following the exclusion of one participant in the feedback group who performed at chance on the FB task

	FB (n = 6)		PA (n = 8)
	Control task	Active task	Control task	Active task
R caudate	2.13 ± 0.07	2.12 ± 0.09	2.20 ± 0.11	2.16 ± 0.05
L caudate	2.06 ± 0.08	2.03 ± 0.09	2.17 ± 0.11	2.08 ± 0.05
R putamen	2.64 ± 0.08	2.61 ± 0.09	2.66 ± 0.07	2.66 ± 0.07
L putamen	2.56 ± 0.09	2.48 ± 0.08	2.54 ± 0.07	2.51 ± 0.09
R ventral striatum	1.79 ± 0.04*	1.56 ± 0.10*	1.68 ± 0.08	1.76 ± 0.06
L ventral striatum	1.93 ± 0.07	1.80 ± 0.05	1.88 ± 0.12	1.98 ± 0.06

R = right, L = left.

Numbers shown are mean ± standard error.

^*Significant comparison (P < 0.05).