electrically_synapsed_to has soma location fasciculates with overlaps receives synaptic input from neuron mesothoracic neuron giant fiber neuron adult posterior dorsal mesothoracic nerve peripherally synapsing interneuron 2010-01-06T06:53:45Z VFB:FBbt_00007408 PSI fly_anatomy.ontology Neuron with its soma located anteriorly and laterally in the rind region of the mesothoracic neuromere (Phelps et al., 2021). It crosses the midline and connects via gap junctions to the giant fiber neuron at the inframedial bridge (Allen et al., 1998). It fasciculates with the posterior dorsal mesothoracic nerve, but terminates within the nerve (King and Wyman, 1980). It synapses onto neighboring motor neurons in this nerve and, unusually, these motor neurons also synapse back onto the PSI (Phelps et al., 2021). There is one of these neurons per hemisphere (Phelps et al., 2021). FBbt:00007408 PSI PSI neuron adult motor neuron adult inframedial bridge adult premotor neuron adult efferent neuron adult VNC neuron cell body rind of adult mesothoracic neuromere