Table 4.

Group activations for the increase > decrease instruction contrast. Regions that were present in the Condition X Phase Interaction examining the onset and elaboration phases are noted in the last column with the distance between the peak evident in the t-test and the interaction.

Lobe/Region	BA	H	Talairach			t	k	Condition X Phase Interaction
			x	y	z
Decrease > Increase Instruction
No voxels survived even a liberal threshold of p < .005 and k > 5
Increase > Decrease Instruction
Frontal
Inferior frontal gyrus	10	R	48	49	−1	4.32	5
Middle frontal gyrus	11	R	48	46	−14	4.72	16
	6	R	16	13	58	5.87	19
	10	R	34	50	−8	4.58	13
	10	L	−34	47	0	4.46	13
	47/10	R	40	51	10	4.43	19
Medial frontal gyrus	8	R	2	49	42	4.45	5
Superior frontal gyrus	8	R	30	16	49	4.43	10
Occipital
Middle occipital gyrus	19/18	L	−30	−79	6	6.73	16
	19	L	−22	−85	8	4.85	7
Parietal
Inferior parietal lobe	40	R	46	−48	48	4.66	17	10 mm*
Other
Cerebellum		L	−24	−69	−30	6.27	154
		L	−4	−77	−21	5.05	69
		R	10	−77	−23	5.66	22
		R	36	−76	−32	4.40	10
		R	18	−69	−22	4.40	6
		R	2	−39	−6	3.85	7
		R	28	−67	−24	4.28	12

^*Present in the (decrease instruction > decrease onset) > (increase instruction > increase onset) interaction contrast.