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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Neurogastroenterol Motil. 2018 May 24;30(10):e13380. doi: 10.1111/nmo.13380

Figure 1. Vagus nerve stimulation and imaging sequence.

Figure 1

A. Schematic diagram of the experiment protocol. A bipolar cuff electrode was implanted at the left cervical vagus of a rat. Vagus nerve stimulation was performed during the 4-hour MRI scans. B. Stimulation waveform, paradigm and parameters used in this study. (inter-pulse duration (IPD) = 50ms; pulse amplitude (PA) = 0.6mA; pulse width (PW) = 0.36ms; frequency = 10Hz; 20 seconds on and 40 seconds off) C. Example semi-coronal view images from the 2D multi-slice volumetric scan. The gastrointestinal tract is highlighted by the Gadolinium-labeled meal. D. Fast scans of the antrum with four slices. The position of the slice package was determined from images acquired from the volumetric scan.