Table 4.

Development of inhibitory paired-pulse ratios

	P8	P16	P27
Stimulation frequency of 5 Hz
IPSP2/IPSP1	0.53 ± 0.06b	0.78 ± 0.03f	0.66 ± 0.03
IPSP5/IPSP1	0.31 ± 0.04b,d	0.68 ± 0.05e	0.53 ± 0.05
IPSP10/IPSP1	0.23 ± 0.03b,d	0.63 ± 0.04e	0.49 ± 0.04
Stimulation frequency of 10 Hz
IPSP2/IPSP1	0.52 ± 0.05c	0.60 ± 0.02	0.64 ± 0.03
IPSP5/IPSP1	0.34 ± 0.05	0.45 ± 0.02	0.45 ± 0.05
IPSP10/IPSP1	0.23 ± 0.04a,c	0.41 ± 0.03	0.38 ± 0.03
Stimulation frequency of 50 Hz
IPSP2/IPSP1	0.33 ± 0.07	0.4 ± 0.06	0.32 ± 0.04
IPSP5/IPSP1	0.06 ± 0.03	0.09 ± 0.04	0.13 ± 0.03
IPSP10/IPSP1	0.07 ± 0.03	0.09 ± 0.04	0.11 ± 0.03

Values are shown as means ± SE; n, number of cells.

^aP < 0.01 and

^bP < 0.001, P8 vs. P16;

^cP < 0.05 and

^dP < 0.01, P8 vs. P27;

^eP < 0.05 and

^fP < 0.01, P16 vs. P27.