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. Author manuscript; available in PMC: 2024 Dec 6.
Published in final edited form as: IEEE Access. 2021;9:26484–26490. doi: 10.1109/ACCESS.2021.3057829

Figure 3.

Figure 3

Plots of the estimated ΔWee percentage against several pulse waveforms for QPS protocols. (a) Stimulus waveforms: 120 µs rectangular unidirectional pulses (i.e. positive phase duration) with four different negative phase durations (100 µs, 150 µs, 200 µs, 250 µs). (b) Stimulus waveforms: 100 µs rectangular unidirectional pulses with four different negative phase durations(100 µs, 150 µs, 200 µs, 250 µs). (c) Stimulus waveforms: 60 µs rectangular unidirectional pulses with four different negative phase durations (100 µs, 150 µs, 200 µs, 250 µs). (d) Stimulus waveforms: 40 µs rectangular unidirectional pulses with four different negative phase durations(100 µs, 150 µs, 200 µs, 250 µs). The stimulus waveforms shown in the left-hand corners are one of the pulses of the stimulation train, which are repeated in the QPS train at different ISI. For each pulse label, the first number indicates the time of the first phase (negative phase duration), and the second number indicates the time of the second phase (positive phase duration).