Table 5.

Mean baseline RMS levels and magnitude of inhibition for each postural condition and stimulus site

	Condition
	Prone	Supine	Sitting	Standing
C7 (Iz)
Baseline RMS (µV)	13.6 ± 5.6	–	8.1 ± 2.6	9.2 ± 3.6
Magnitude of inhibition (%)	− 20 ± 6	–	− 13 ± 9	− 13 ± 8
Mastoid (PO10)
Baseline RMS (µV)	12.9 ± 3.9	7.6 ± 2.4	7.9 ± 3.5	6.8 ± 2.0
Magnitude of inhibition (%)	− 18 ± 12	− 14 ± 8	− 11 ± 11	− 12 ± 12
Sternal (Iz)
Baseline RMS (µV)	–	7.4 ± 2.7	8.3 ± 3.0	8.7 ± 3.5
Magnitude of inhibition (%)	–	− 10 ± 6	− 8 ± 7	− 7 ± 7

The recording electrode studied is given in brackets for each stimulus condition