Table 1. Comparison of latency to convulsions after PTZ administration.

SEM, standard error of the mean; PTZ, pentylenetetrazole

Specimen number	Group 1	Group 2	Group 3	Group 4	Group 5
1	177	600	317	584	181
2	67	600	600	120	1,137
3	147	560	587	163	244
4	60	5	369	153	600
5	82	600	1,110	548	600
6	104	600	600	500	103
7	600	600	600	181	175
8	178	600	600	600	600
Mean, seconds	176.88	520.63	597.88	356.13	455.00
SEM, seconds	62.67	73.83	84.04	77.22	123.21
P value	---	0.002	<0.001	0.047	0.032