FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term Y neuron Y4 ID (Ontology) FBbt:00003915 (Fly Anatomy)
Definition Y neuron whose cell body fiber projects through the lobula plate without arborizing. It branches extensively in the second optic chiasm, with one branch doubling back to form a fine terminal arborization in lobula plate layers 1 and 2. Multiple branches arborize in the lobula, reaching most layers, with a mix of terminal morphologies. A branch projects into the medulla where it forms a wide asymmetric terminal arbor that projects mainly along medulla layers M8-M9.[ FlyBase:FBrf0049410 ]
Also Known As "Y14" ; "Y4"
Comment Pre- versus postsynaptic innervation judged by scoring of terminal morphology from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB.
Links to External Ontologies
VFB:FBbt_00003915
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Spanning Tree (Parents/Children)
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  optic lobe intrinsic columnar neuron
   |__Y neuron
       |__Y neuron Y4
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Secondary IDs
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FlyBrain_NDB:10180
VFB:FBbt_00003915