Figure 10. Timing of extracellularly recorded responses evoked by PT and MLF stimuli in three commissural interneurones.

A–C, superimposed extracellular records from a commissural interneurone obtained at the same location as the records of field potentials in Fig. 3A and B. D–F, extracellular records from another commissural interneurone and averaged records of the corresponding field potentials (grey traces, at a higher amplification). G–I, extracellular (top) and intracellular (middle) records from the third interneurone. Bottom traces in all panels are from the cord dorsum. The numbers above records in A–F indicate by which stimuli the field potentials and the spikes were evoked.