Table 2. The effects of 2-heptanone and lidocaine on the isolated sciatic nerve of the rat.

Substance	Concentration	IT50 (seconds)	IT0 (seconds)	N
2-heptanone	10 mg/mL	22.3±1.1	195±12	7
	3.41 mg/mL	39.14±4.84	221.88±7.32	12
	2.28 mg/mL	108.9±0.22	358.8±18.07	4
	1.41 mg/mL	109.7±2.87	517.5±25.62	4
IC50	0.469 mg/mL (SEM±0.002)
lidocaine	10.0 mg/mL	12.0±0.95	101.3±2.16	12
	3.41 mg/mL	27.11±3.16	147.50±9.96	12
	2.28 mg/mL	30.9±0.22	186.8±8.07	6
	1.41 mg/mL	32.23±3.16	320.3±14.96	6
IC50	0.337 mg/mL (SEM±0.001).