Table 2. Comparison of the duration of the PTZ-induced convulsion.

SEM, standard error of the mean; PTZ, pentylenetetrazole

Specimen number	Group 1	Group 2	Group 3	Group 4	Group 5
1	261	79	5	12	7
2	300	223	23	30	1
3	304	413	38	0	6
4	400	45	88	68	0
5	97	74	2	122	0
6	100	0	0	34	39
7	200	0	44	569	3
8	400	81	0	0	0
Mean, seconds	257.75	114.38	25.00	104.38	7.00
SEM, seconds	41.93	49.27	10.92	67.92	4.68
P value	---	0.022	<0.001	0.038	<0.001