Table 1Membrane properties of normal and axotomized rubrospinal neurons
Resting membrane potential (mv)
Input resistance
Membrane time constant (ms)
Rheobase, nA
Normal
−64.3±3.8(34)
71.1±25.5(34)
18.5±5.3(34)
0.21±0.14(34)
Axot-3d
−65.8±3.9(28)
59.4±16.7(28)*
13.5±3.4(28)**
0.34±0.25(28)**
Axot-4d
−64.5±4.9(28)
58.6±17.2(36)*
15.9±4.8(31)*
0.35±0.29(36)*
Axot-4w
−65.8±4.6(16)
100.8±34.4(16)**
20.4±4.3(15)
0.17±0.09(16)
Axot-10w
−65.6±4.1(21)
87.6±30.6(21)*
18.5±5.3(21)
0.15±0.08(21)
Values are means±S.D.; number of neurons is in parentheses. Axot-3d, 4d, 4w, and 10w are the four groups examined three days, four days, four weeks and 10 weeks after axotomy.Symbols indicate significance vs comparable control group. *P<0.05, **P<0.01, two-tailed Student's t-test.
