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. 2008 Dec 1;587(Pt 2):401–418. doi: 10.1113/jphysiol.2008.159236

Figure 6. Examples of synaptic actions from contralateral group II afferents and the MLF on 3 group II excited interneurons.

Figure 6

Left (A–C), middle (D–F) and right (G–H) panels show intracellular records from three interneurons (upper traces) and the corresponding records of afferent and descending volleys from the cord dorsum (lower traces). A, D and G illustrate EPSPs evoked from ipsilateral group II afferents and antidromic activation of one of these interneurons from the GS motor nucleus (MN). B, E and H show effects of stimuli applied to the contralateral Q nerve at intensity near-maximal for group II afferents (5T) and C, F and I effects evoked from the MLF. Note in C that hardly any PSPs were evoked by even 200 μA stimuli. Voltage calibrations (0.2 mV) are at the beginning of intracellular records. Time calibration in G is for the records in A, D, G and that in I for the remaining records.