Table 1.

Comparison of conduction velocities of SARs and RARs

SARs		RARs
Range, m/s (n)	Mean, m/s	Range, m/s (n)	Mean, m/s	Species	Reference
8–35* (10)	20.2	8–12* (4)	9.1	Cat	Knowlton and Larrabee, 1946 (16)
14–59 (57)	36 ± 1.3	16–37 (10)	25 ± 2.2	Cat	Paintal, 1953 (24)
5–68.5 (100)	32.3 ± 11.8	12–40 (41)	23.3 ± 7.1	Dog	Sampson and Vidruk, 1975 (26)
17–66 (27)	32.0 ± 2.0	11–52 (29)	31.9 ± 1.7	Dog	Jonzon et al., 1988 (15)

RARs, rapidly adapting receptors; SARS, slowly adapting receptors. For a mean of 9 m/s, the highest possible conduction velocity of RARs is 12 m/s (if the individual ones were 8, 8, 8, and 12 m/s). The lowest possible conduction velocity of SARs is 8 m/s. n in the parentheses refers to the number of afferents tested.

^*This is assumed according to the text.