TABLE 5.

taVNS (Summary parameters of 22 studies).

	Pulse Width	Frequency	On/Off time	Time administered	Current
Most common Parameter	250 μs (5 uses)	25 Hz (12 uses)	30 s ON (9 uses but variable OFF)	No Common	Supra-Threshold (10 uses)
Range of Parameters	20–500 μs	1–30 Hz	0.5 s – 30 min ON/30–270 s OFF	6 min – 9 mo	0.13–50 mA