Table 1. functional responses.

Voxel count	Z	Coordinates	Anatomical region
A) Tapping: SLEEP [ L - U ] - WAKE [ L - U ] (increases, contrast 1)
7	3.6	20 -30 -28	cerebellar culmen
5	3.5	-24 -22 0	globuspallidus
6	3.5	10 -16 58	medial superior frontal gyrus (SMA)
6	3.4	18 64 2	frontal pole
B) Tapping: SLEEP [ L - U ] - WAKE [ L - U ] (decreases, contrast 1)
18	3.7	-22 -6 72	PMC
C) Monitor: SLEEP [ L - U ] - WAKE [ L – U ] (increases, contrast 2)
15	3.4	-32 -36 -2	posterior hippocampus

MNI coordinates for the peak voxels of clusters surviving at p=0.001 uncorrected and k=5.

Abbreviations: SMA = supplementary motor area, PMC = premotor cortex.