Type I  Type II  Scheffé:P  n  

n  63  7  
Age  15.6 ± 2.5  15.1 ± 2.0  0.62/0.55  63/7 
Input resistance, GΩ  0.61 ± 0.51  1.25 ± 0.55  0.04/0.007^{*}  54/7 
Time constant, ms  74.6 ± 32.8  69.3 ± 36.5  0.61/0.51  54/7 
Spike width, ms  1.44 ± 0.42  1.86 ± 0.46  0.04/0.01  52/7 
Slope, V/s  209 ± 72  200 ± 93  0.78/0.72  52/7 
Firing threshold, mV  −38.8 ± 12.7  −38.4 ± 6.2  0.44/0.31  52/7 
Spike amplitude, mV  66.43 ± 10.41  78.02 ± 8.64  0.06/0.02  52/7 
Plateau discharge  22.57 ± 20.15  0  0.049/0.01^{*}  49/7 
Difference firing threshold − ADP, mV  7.46 ± 3.6  16.98 ± 4.1  0.0002/>0.001  52/7 
Average firing rate at rest, spikes/s  13.6 ± 6.0  7.2 ± 2.9  0.06/0.02  52/7 
Low/high threshold calcium potentials  ^{+}  —  
Sodium plateau  ^{+}  —  
Delayed inward rectification  ^{+}  ^{+} 

The parameters in the rows 2–11 (age to average firing rate at rest) were taken to compute a oneway multivariate variance analysis (MANOVA). Significance levels for each parameter as yielded by Scheffé posthoc comparison are given for normally distributed variables. For variables not normally distributed (∗), the nonparametric MannWhitney test was applied. ADP, afterdepolarization. Oneway MANOVA, P = 0.000031.