Table 1.

Comparison of proportions of motoneurones with EPSPs and IPSPs evoked from the ipsilateral and contralateral NR

1	2	3	4	5
Pathways	Test	Total no	Ipsi NR	Contra NR
Ipsilaterally descending	EPSPs	38	37%	53%
Contralaterally descending	EPSPs	37	38%	19%
Ipsilaterally descending	IPSPs	38	29%	42%
Contralaterally descending	IPSPs	37	0%	0%

Columns: 1, pathways via which facilitation was evoked; 2, tested PSPs; 3, total numbers of motoneurones tested; 4 and 5, percentages of motoneurones in which PSPs were evoked by stimulation (trains of 4–5 stimuli, at 100 μA) of the ipsilateral (4) or the contralateral (5) NR. Ipsilateral and contralateral denote nuclei and tracts with respect to motoneurones. No significant differences were found between percentages of motoneurones affected by stimulation of ipsilateral and contralateral NR via either pathway (Chi-square tests).