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. 2014 Oct 8;26(12):1812–1816. doi: 10.1111/nmo.12453

Figure 2.

Figure 2

Synaptic inputs to Dogiel type I and filamentous myenteric neurons from the human colon. Spontaneous and evoked EPSPs were recorded in Dogiel type I, and in a filamentous neuron (A, scale bar 100 μm). (B) Fast EPSPs induced by focal electrical stimulation of nearby ganglia or internodal strands (n = 5) increased in amplitude when the membrane potentials were offset to more negative levels. (C) Spontaneous fast EPSPs were recorded in eight neurons. These EPSPs provided sufficient depolarization to evoke action potentials in two neurons (C top trace) and were inhibited by addition of hexamethonium (0.2 mM, C bottom trace). (D) An IPSP evoked by electrical stimulation (3 pulses, 20 V) in one neuron.