Table 4.

Results of the ROI analysis for each stimulus modality

ROIs	Main effect of A attention	Main effect of A expectation	Interaction A attention × expectation
Primary auditory cortex
Auditory stimuli
F(1,21)	0.148	12.671	0.846
p	0.704	0.002**	0.368
ηp2 (90% CI)	0.007 (0, 0.140)	0.376 (0.106, 0.558)	0.039 (0, 0.223)
Visual stimuli
F(1,21)	4.310	0.213	0.117
p	0.050	0.649	0.736
ηp2 (90% CI)	0.170 (0, 0.383)	0.010 (0, 0.154)	0.006 (0, 0.131)
Primary visual cortex
Auditory stimuli
F(1,21)	0.165	7.213	2.096
p	0.689	0.014*	0.162
ηp2 (90% CI)	0.008 (0, 0.144)	0.256 (0.032, 0.461)	0.091 (0, 0.296)
Visual stimuli
F(1,21)	0.995	0.054	5.062
p	0.330	0.819	0.035*
ηp2 (90% CI)	0.045 (0, 0.233)	0.003 (0, 0.091)	0.194 (0.008, 0.406)

ROIs: primary auditory and primary visual cortex. 90% CI of η_p² is given in parentheses.

**p < 0.01,

*p < 0.05. A, auditory.