Fig. 1From: Specific vagus nerve stimulation parameters alter serum cytokine levels in the absence of inflammationExperimental design and stimulation pulse waveforms. a Experimental timeline. Electrical stimulation pulse trains were applied to the exposed left cervical vagus nerve for 4 min under anesthesia. Following stimulation, the animals were recovered for 2 h, euthanized, and whole blood was collected through cardiac puncture. b Schematic of the charge-balanced stimulation waveforms used during stimulation, with short pulse width (top) and long pulse width (bottom). The actual waveform shapes used in this study are shown to the rightBack to article page