Figure 4
Intensity dependent effects of unilateral, unbalanced bilateral and balanced bilateral spinal nerve (SN) stimulations on frequency of bladder contractions during electrical stimulation. X-axis is the varied current intensity relative to multiples of motor threshold (Tmot) stimulation. Balanced stimulation had equal intensities on left and right SN. Unbalanced stimulation was delivered at a fixed intensity of Tmot on one side while the current intensity was varied on the SN of the other side. The response of contraction frequency is the mean value as a percentage of pretreatment values (% control) during stimulation. *p < 0.05, vs control without stimulation, Student’s t-test.