Table 3.

Threshold current to elicit the EECP. Seven channels were used simultaneously and the duration of the pulse was a biphasic current pulse, 1 ms/phase with a 1-millisecond interphase delay. The repetition rate was 4 Hz. 0 week means the day of implantation.

Time after implantation	Threshold current (μA)	Threshold charge density per phase (μC/cm2)
0 week	128	48.64
1 week	104	39.52
2 weeks	80	30.40
3 weeks	96	36.48
4 weeks	80	30.40
5 weeks	104	39.52
6 weeks	80	30.40