Table 1.

	Juvenile (<11 gm)	Adult (>50 gm)	p<
Afterdischarge	NO	YES
Resting potential (mV)	−46.9  ± 4.6	−54.1  ± 4.6	N.S.
Spike number in response to 500 msec current pulse	1.2  ± 0.1	3.1  ± 0.9	0.01
Input resistance (MΩ)	2620  ± 529	893  ± 347	0.03
Membrane capacitance (pF)	35.1  ± 5.3	271.3  ± 63.9	0.001
Soma diameter (μm)	12.5  ± 5.3	30.4  ± 1.6	0.001
Peak current density (nA/nF)
Noninactivating delayed-rectifier	117.7  ± 18.3	39.6  ± 5.8	0.0001
Inactivating delayed-rectifier	45.4  ± 8.3	25.3  ± 7.7	0.001
Calcium-dependent potassium (est.)	37.6	14.0
A-type potassium	1.0  ± 0.3	2.6  ± 0.8	0.05
Calcium (basal)	−1.9  ± 0.3	−5.0  ± 0.7	0.03
PKC-activated calcium (est.)	−0.6	−7.2