Skip to main content
. Author manuscript; available in PMC: 2013 Jul 16.
Published in final edited form as: Neuroimage. 2012 Mar 30;61(4):1277–1286. doi: 10.1016/j.neuroimage.2012.03.068

Table 3.

Robustness of PPI Estimates and Significance: 2 Conditions
Models
Model Parameters sPPI sPPI+task
s		 sPPIplus gPPI2 Single
Condition
PPI Effect
1 Condition plus fixation 0.99
(0.01) 		0.99 (0.01) 0.99
(0.01) 		0.99 (0.01) 0.99
(0.01)
2 Conditions (A-B) 0.49
(0.01) 		0.49 (0.01) 0.49
(0.01) 		0.98 (0.02) 0.40
(0.01)
2 Conditions
(effectively the same as
2 Conditions (A-B)) 		0.49
(0.01) 		0.49 (0.01) 0.49
(0.01) 		0.98 (0.02) 0.40
(0.01)
2 Conditions 0.88
(0.02) 		0.88 (0.02) 0.49
(0.01) 		0.98 (0.02) 1.00
(0.01)
2 Conditions plus
fixation 		0.71
(0.03) 		0.58 (0.03) 0.51
(0.01) 		1.02 (0.01) 1.91
(0.01)
No PPI Effect
2 Conditions plus
fixation 		0.15
(0.01) 		0.01 (0.01) 0.01
(0.01)		 0.02
(0.1)		 0.06
(0.01)

Values are the mean and standard errors across seed voxels. For PPI Effect models, bold values indicate tests that were significant for A>B at p<0.05. For No PPI Effect models, bold values indicate tests that were significant for A-B~=0 at p<0.05.