Table 2.

Statistical comparison (paired t test) of activity at final study between each of the Phase 2 conditions (tested, restudied, or neither tested nor restudied)

Region	t-statistic	z-score	p-value
Tested versus restudied
Anterior PFC	1.98	1.88	0.06
Dorsolateral PFC	2.55	2.36	0.02
PIPL/dorsal AG	3.90	3.38	<0.001
Precuneus	3.73	3.27	0.001
Middle cingulate	2.87	2.62	0.01
Tested versus neither tested nor restudied
Anterior PFC	−1.87	−1.79	0.07
Dorsolateral PFC	−2.95	−2.69	0.01
PIPL/dorsal AG	4.63	3.85	<0.001
Precuneus	6.44	4.82	<0.001
Middle cingulate	3.67	3.22	0.001
Restudied versus neither tested nor restudied
Anterior PFC	−3.61	−3.19	0.001
Dorsolateral PFC	−4.57	−3.82	<0.001
PIPL/dorsal AG	1.65	1.59	0.11
Precuneus	3.66	3.21	0.001
Middle cingulate	2.01	1.92	0.06

Corresponding data are plotted in Figure 3. Region coordinates (x, y, z) in MNI space: anterior PFC (−47, 37, −3); dorsolateral PFC (−49, 12, 25); pIPL/dorsal AG (−44, −56, 46); precuneus (−8, −73, 36); middle cingulate (−1, −24, 33).