Table 1. Effects of 1.4 mM sodium salicylate (NaSal) on action potential properties (n = 10).

Measurements	Before NaSal perfusion			After NaSal perfusion
Threshold (mV)1	−31.3	±	1.4	−29.3	±	1.6*
Amplitude (mV)2	68.0	±	2.7	63.4	±	2.8**
Rise slope (mV/ms)	83.4	±	11.9	72.4	±	11.9*
Decay slope (mV/ms)	−32.6	±	3.1	−29.0	±	2.7**
Half-width (ms)	1.5	±	0.1	1.6	±	0.1*
Threshold current (pA)3	44.5	±	6.7	77.5	±	11.8***

All data are expressed as means ± SEM. *, ** and *** indicate P<0.05, P<0.01 and P<0.001, respectively (paired Student's t-test).

¹The action potential threshold was defined as the membrane potential at which the potential of the membrane began to rise rapidly and the neuron generated only one or two spikes.

²The action potential amplitude was calculated by subtracting the threshold from the peak value of the action potential.

³The threshold current was defined as the minimum current that is required to elicit one or two spikes.