TABLE 1.

Region of Interest (ROI) Coordinates

Brain Region	X	Y	Z
Left primary motor cortex (LM1)	−46	−10	40
Right primary motor cortex (RM1)	54	−10	36
Left rolandic operculum (LRO)	−54	−8	20
Right rolandic operculum (RRO)	54	−8	20
Supplementary motor area (SMA)	4	−2	58
Cingulate cortex (CING)	−6	8	40
Left auditory cortex (LAUD)	−56	−14	4
Right auditory cortex (RAUD)	56	−26	2

Note. Networks nodes were selected from the image data obtained from healthy control participants. The center of mass of each ROI is presented here as a stereotactic coordinate in a standard brain template in Talairach space (Talairach & Tournoux, 1988). The ROIs extended 5 mm in each direction from the center of mass. Positron emission tomography counts of regional cerebral blood flow were averaged from the voxels in the ROIs from the rest, solo, and chorus conditions from each of the three repeated trials.