receives synaptic input in region sends synaptic output to region medulla layer M4 medulla layer M6 distal medullary amacrine neuron distal medullary amacrine neuron Dm7 Dm7 Pre- versus postsynaptic innervation judged by scoring of terminal morphology from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB. Dm7 Distal medullary amacrine neuron that branches in layer M6. The branches spread along the layer, forming an arbor in M6 with terminals of mixed morphology. Some collaterals from this arbor extend to M4 where they also spread to form an arbor with terminals of mixed morphology. FlyBrain_NDB:10087 VFB:FBbt_00003774 fly_anatomy.ontology FBbt:00003774 optic lobe wide-field columnar neuron