Table 4. The session number at which each of 9 individual subjects exceeded the maximal stimulator output.

	Session	Phase Charge (Ucoul)
Female	6	29.8
Female	3	31.8
Male	5	27.9
Male	5	40.0
Male	1	37.1
Male	2	35.5
Male	4	40.1
Male	6	40.3
Male	3	32.3