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Fig. 7. Effects of ivn stimulation on the esophageal rhythm. (A)
Intracellular recordings of the VD motor neuron (lower trace) and the LG
neuron (middle trace), and an extracellular recording of the ion,
illustrating the activity of the esophageal motor neuron (OMN; upper trace).
ivn stimulation enhanced OMN activity. (B) Box plots (minimum, lower
quartile, median, upper quartile, maximum) of OMN activity (left, bin width 6
s) and maximum instantaneous firing frequency (right) before (open boxes) and
during (filled boxes) ivn stimulation. (C) Box plots showing spikes
per burst, period, burst duration, mean intraburst spike frequency and duty
cycle of OMN before (open boxes) and after ivn stimulation (filled
boxes). *P<0.05, **P<0.01,
***P<0.001 (Wilcoxon signed-rank test).