. Author manuscript; available in PMC: 2012 Oct 15.

Published in final edited form as: J Neurosci Methods. 2011 Aug 12;201(2):390–398. doi: 10.1016/j.jneumeth.2011.08.011

Table 2.

Characteristics of electrical stimulation algorithms at each frequency delivered to determine current vocalization threshold.^a

	Frequency
	5 Hz	250 Hz	2000 Hz
Stimulus characteristics
Fiber preferentially stimulated	C fiber	Aδ fiber	Aβ fiber
Duration of stimulus at each level	1 s	1 s	1 s
Intensity (minimum–maximum, mA)	0.05–0.5	0.14–0.5	0.4–1.6
Increment intensity (mA)	0.05	0.04	0.1
Respective current vocalization threshold (units)	5–50	14–50	40–160

One current vocalization threshold unit is equal to 100 mili Amperes (mA).