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. 2011 Jul 20;106(5):2201–2215. doi: 10.1152/jn.00519.2011

Fig. 4.

Fig. 4.

Bursting activity of the rear HN(L,15) interneuron is time-locked with the front premotor HN(L,4) interneuron and coincides with postsynaptic events in the rear HE(L,17) motor neuron as illustrated in simultaneous extracellular recordings from the HN interneurons during intracellular recording from the HE motor neuron. Inhibitory postsynaptic potentials (IPSPs) in the HE(L,17) motor neuron (A) and inhibitory postsynaptic currents (IPSCs) in the subsequent single-electrode voltage-clamp recording (B) coincide with bursts of action potentials in the HN(15) interneuron. Note that burst activity in the HN(15) interneuron is time-locked and, as seen by comparing A and B, switches phase relations with the HN(4) interneuron (slanted lines). Dotted lines in the HE motor neuron recording refer to −40-mV membrane potential (A) and 0-nA holding current (B). Holding potential: −45 mV (B).