. Author manuscript; available in PMC: 2011 Jul 1.

Published in final edited form as: Clin Neurophysiol. 2010 Mar 31;121(7):1072–1079. doi: 10.1016/j.clinph.2009.12.038

Table 2. Characteristics of the C fiber nociceptors and sympathetic efferents.

		CRPS I (13 patients)				CRPS II (11 patients)
C fiber subtype		N	CV (m.s⁻¹)	Slowing (%)		N	CV (m.s⁻¹)	Slowing (%)
C fiber subtype		N	CV (m.s⁻¹)	after “pause”	2 Hz	N	CV (m.s⁻¹)	after “pause”	2 Hz
CMH	1a	18	0.72±0.16	1.06±0.16	28.1±7.63	17	0.74±0.19	1.21±0.71	30.9±13.6
MIA	1b	8	0.47±0.17	4.36±1.16	34.4±13.7	11	0.48±0.24	3.86±1.20	39.8±22.5
Sympathetic	4	18	0.63±0.19	1.67±1.54	4.74±1.93	4	0.51±0.35	1.20±0.54	4.80±0.18

CV = conduction velocity; CMH = mechano-sensitive C fiber nociceptor; MIA = mechano-insensitive C fiber nociceptor; Sympathetic = sympathetic efferent C fiber; Slowing = activity-dependent slowing of CV; “pause” refers to the 3-min period of 1/30 Hz stimulation, following which stimulation at 0.25 Hz resumed; 2 Hz = refers to the end of the 3-min period of stimulation at 2-Hz.