Table 1.

Statistical analysis of spike numbers for LS subpopulations of neurons^a

Tonic cells		Phasic cells		Burst cells
Current (pA)	p	Current (pA)	p	Current (pA)	p
10	0.687003	NA	NA	10	0.459418
20	0.303013	20	0.452063	20	0.408045
30	0.12734	30	0.578307	30	0.484975
40	0.157265	40	0.773888	40	0.650584
50	0.104904	50	0.607294	50	0.915286
60	0.117704	60	0.431423	60	0.934802
70	0.0890973	70	0.674078	70	0.939876
80	0.0790726	80	0.396248	80	0.914621
90*	0.0393411	90	0.430464	90	0.765176
100*	0.0247796	100	0.615486	100	0.61091
110*	0.0262709	110	0.278638	110	0.394572
120*	0.0195994	120	0.225632	120	0.291496
130*	0.0196844	130	0.324088	130	0.248996
140*	0.0139169	140	0.418522	140	0.223559
150*	0.0112489	150	0.261719	150	0.153725
160*	0.0133945	160	0.323187	160	0.201719
170**	0.00693941	170	0.494336	170	0.240875
180**	0.00320534	180	0.316105	180	0.108232
190**	0.00322645	190	0.0864734	190	0.100398
200**	0.00576751	200	0.131641	200	0.255281

^aThe p values for multiple Student's t test analysis of spike numbers at incremental current injections for tonic cells, phasic cells, and burst cells in the LS.

*p < 0.05,

**p < 0.01.