Table 4Parameters of inhibitory postsynaptic potentials elicited from the mesencephalic reticular formation dorsolateral to the red nucleus in normal and axotomized rubrospinal neurons
Normal
Axot-4d
Axot-10w
Number of cells with IPSP
25/25
16/16
10/12#
Amplitude, mV
10.6±3.4(23)
7.4±3.2(16)**
7.6±2.7(10)*
Duration, ms
60.6±22.9(23)
33.7±14(16)**
53.9±22.8(10)
Reversal potential, mV
−74±3.7(23)
−72.8±3.8(16)
−72.4±3.6(10)
Numbers are means±S.D. with number of cells in parentheses for all except the first row. In the first row, number of cells recorded are expressed as number of cells with identifiable IPSP/total number of cells examined in that group. Other abbreviations, see Table 1. *P<0.05, **P<0.01, two-tailed Student's t-test between axotomized groups and corresponding normal controls. #P, 0.05, Chi-Square test between the mark group and normal controls.
