Figure 8. Summary of conditioning effects on monosynaptic spinal cord field potentials.

A, modulation of monosynaptic field averaged across all datasets following conditioning stimulation of the PT or peripheral nerve. B, percentage occurrence of individual facilitation effects which were individually significant at the P < 0.05 level. No significant suppression events were observed following stimulation of any peripheral nerve. (PT, three datasets; nerve, eight datasets). C, modulation of monosynaptic field potential plotted against modulation of antidromic cortical field by preceding PT stimuli for interstimulus intervals between 5 and 50 ms. The magnitudes of the conditioning effects are proportional over the range 15–50 ms.