Fig. 2.
Baseline brain activity predicting conscious perception of subsequent somatosensory stimuli. (A) Increased baseline brain activity in the medial thalamus (Th), dorsolateral prefrontal cortex (DLPF), intraparietal sulcus/posterior parietal cortex (IPS), and aACC 3 sec before stimulus presentation predicts perception of low-intensity sensory stimuli. (B) Decreased baseline activity in the default brain network encompassing posterior cingulate/precuneus (Pr) and bilateral temporoparietal junctions (TP) exerts a facilitatory effect upon perception of subsequent somatosensory stimuli. Contrasts are thresholded at an uncorrected P value of <0.001 on a canonical MR template. Color scales refer to T values of individual voxels. (C) Effect size (i.e., mean and standard deviation of the parameters estimates for baseline effect) in peak voxels of aACC, intraparietal sulcus (IPS), and middle frontal gyrus (DLPF) before stimuli subsequently rated as perceived (P1) or unperceived (P0). ∗, Significant difference between baseline effect sizes thresholded at a P value corrected for multiple comparisons of <0.05.