Table 4

Tone nadir to Ca²⁺-free (EGTA) solution

Experiment	n	Control	Experiment	pValue^4-a
l-NOARG (10⁻⁴ M) vs. ODQ (10⁻⁵ M)	6, 5	22.0 ± 5.3^4-151	13.8 ± 3.8^4-151	0.219
TEA/ODQ vs. (20 mM/10⁻⁵ M) TEA/ODQ (tetrodotoxin)	5	20.5 ± 3.3^4-151	34.6 ± 3.9^4-151	0.0035

Initial tone = 100%. Means ± S.E.M.

↵4-a p values were determined by paired comparisons. Values for other groups are not shown; none were significantly different from values in left (control) column.
↵4-151 Significantly different from 0.