TABLE 3.

Average RMR changes with bilateral monopolar stimulation of individual DBS contacts during metabolic chamber experiments in 3 patients undergoing LHA DBS^*

Case No.	Contact 0	Contact 1	Contact 2	Contact 3
1	no change	28% increase at 5.5 V	indeterminate	0–5 V no change, >5 V indeterminate
2	indeterminate	indeterminate	indeterminate	indeterminate
3	indeterminate	9% increase at >4 V	indeterminate	indeterminate

^*Stimulation was performed in monopolar mode with the case or pulse generator always acting as the anode (positive contact). Pulse width (90 msec) and frequency (185 Hz) were kept constant during all stimulation settings. Calculations were deemed indeterminate when patient motion made it difficult to ascertain whether RMR changes were due to stimulation or motion.