Fig. 3.

Separate ketamine and placebo effects in N = 17 healthy subjects. Shown are positive effects (positive signal correlation of BOLD signal between seed regions and other brain voxels) with second level result maps of seed-to-voxel analyses for all four networks: ECN, SN, DAN and DMN. The seed regions of each network are indicated as green circles. Significant results without additional Bonferroni correction of thresholds. No negative ketamine effects (negative signal correlation of BOLD signals) were observed. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)