FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term adult protocerebral bridge 1 glomerulus-ellipsoid body tile-gall neuron ID (Ontology) FBbt:00047031 (Fly Anatomy)
Definition Interneuron that has dendrites in a single protocerebral bridge (PB) glomerulus, and axon terminals in one tile domain of the ellipsoid body (EB) and either the dorsal or ventral gall (Wolff et al., 2015). PB arbors may spill into neighboring glomeruli (Wolff and Rubin, 2018) and EB terminals may spread slightly into neighboring tiles (Wolff et al., 2015). Neurons that target odd or even numbered PB slices target the dorsal or ventral gall, respectively, with arbors filling the region (Wolff et al., 2015). These neurons are cholinergic (Turner-Evans et al., 2020). They are synapsed by E-PG neurons of the same PB glomerulus and output onto P-EN2 neurons in the EB (Turner-Evans et al., 2020). Its soma is located close to the PB glomerulus it innervates (Wolff et al., 2015). Collectively, all 9 protocerebral bridge glomeruli are targeted by cells of this type (Wolff and Rubin, 2018). It develops from one of the four central complex neuroblasts (Sullivan et al., 2019).[ FlyBase:FBrf0227801 FlyBase:FBrf0240744 FlyBase:FBrf0241592 FlyBase:FBrf0246945 ]
Also Known As "P-EG neuron" ; "PBG1-9.s-EBt.b-D/V GA.b neuron" ; "PEG"
Comment Thought not to arborize in PB G9 by Wolff et al. (2015), this was amended in Wolff and Rubin (2018) and they changed the name from PBG1-8.s-EBt.b-D/V GA.b to PBG1-9.s-EBt.b-D/V GA.b. This neuron was not identified by Lin et al. (2013) (FBrf0221742) and does not correspond to PB1-glomerulus->EBC-IDFPDBSB or any other Lin et al. (2013) type (Wolff and Rubin, 2018).
Links to External Ontologies
VFB:FBbt_00047031
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 adult protocerebral bridge 1 glomerulus-ellipsoid body tile-gall neuron (all annotations which use CV term, excluding "NOT" statements)       5      9
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small field neuron
 |__small field neuron of the central complex__
interneuron                                    |
 |__input/output neuron________________________|
cholinergic neuron                             |
 |__adult cholinergic neuron___________________|
ectodermal derivative                          |
 |__anterior ectoderm derivative_______________|
adult neuron                                   |
 |__adult cholinergic neuron___________________|
adult central complex neuron                   |
 |__small field neuron of the central complex__|
adult interneuron                              |
 |__small field neuron of the central complex__|
CNS neuron                                     |
 |__supraesophageal ganglion neuron____________|
                                               adult protocerebral bridge 1 glomerulus-ellipsoid body tile-gall neuron  14 rec.
                                                |__adult protocerebral bridge glomerulus 1-ellipsoid body tile-dorsal gall neuron
                                                |__adult protocerebral bridge glomerulus 2-ellipsoid body tile-ventral gall neuron
                                                |__adult protocerebral bridge glomerulus 3-ellipsoid body tile-dorsal gall neuron
                                                |__adult protocerebral bridge glomerulus 4-ellipsoid body tile-ventral gall neuron
                                                |__adult protocerebral bridge glomerulus 5-ellipsoid body tile-dorsal gall neuron
                                                |__adult protocerebral bridge glomerulus 6-ellipsoid body tile-ventral gall neuron
                                                |__adult protocerebral bridge glomerulus 7-ellipsoid body tile-dorsal gall neuron
                                                |__adult protocerebral bridge glomerulus 8-ellipsoid body tile-ventral gall neuron
                                                |__adult protocerebral bridge glomerulus 9-ellipsoid body tile-dorsal gall neuron
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Is a supraesophageal ganglion neuron
small field neuron of the central complex
anterior ectoderm derivative
input/output neuron
adult cholinergic neuron
Develops from central complex neuroblast
Part of
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VFB:FBbt_00047031