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. Author manuscript; available in PMC: 2021 May 1.
Published in final edited form as: Exp Neurol. 2020 Feb 3;327:113220. doi: 10.1016/j.expneurol.2020.113220

Figure 1: Implanted VNS activates the vagus nerve at low intensities.

Figure 1:

a) VNS delivered via an implanted cuff electrode produces reductions in SpO2 as a function of stimulation intensity (n=8). b) The threshold intensity for generating a significant drop in SpO2 was approximately 0.5 mA. c) VNS delivered via an implanted cuff electrode produces minimal muscle activation as a function of stimulation intensity (n=8). * denotes intensities at which the mean response significantly differed from zero with p<0.05.