Figure 1 (a) Stimulation parameter. Repetitive square-wave electric currents of alternating polarity with a pulse width of 0.3 msec and a frequency of 1 Hz were delivered through a pair of electrodes
Figure 1 (a) Stimulation parameter. Repetitive square-wave electric currents of alternating polarity with a pulse width of 0.3 msec and a frequency of 1 Hz were delivered through a pair of electrodes