Increase stimulation amplitude until the subject says, “STOP ”(deactivate the hand switch)

Activate hand switch again and record the EIC for 5 sec on the Kincom Simultaneously record the phase charge from the digital display of the VMS II stimulator

Repeat the 5 sec of EIC 10 times (10 bouts) with 30 sec rest between bouts

On each Odd bout (3, 5, 7, 9) ask the subject if she/he can tolerate more stimulation. If “YES ”increase amplitude until the subject says “STOP"

During bout 10 record EIC and Phase charge

At the end of each session ask the subject to report what prevented her/his from taking more stimulation (pins/needles, muscle cramps, other noxious sensation)

Repeat sessions on every other day for a total of six sessions over two weeks