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. Author manuscript; available in PMC: 2014 Jul 22.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2012;2012:5730–5733. doi: 10.1109/EMBC.2012.6347296

Figure 3.

Figure 3

Measured pacing threshold voltage (blue line; left ordinate) and threshold charge (red line; right ordinate) vs. pulse duration determined experimentally in a rabbit using a square stimulus at the Left Ventricular Apex. Threshold charge was also measured for exponential pulses delivered at the Left Ventricular Apex from the designed relaxation oscillator (vertical bar at time constant = 0.375ms).