bIPS [FBbt_20004075]

Adult interneuron with its soma posterior-ventral to the gnathal ganglia (Schlegel et al., 2024; Dorkenwald et al., 2024). It is a putative embryonic-born neuron (Schlegel et al., 2024; Dorkenwald et al., 2024). It has postsynapses in the ipsilateral inferior posterior slope, where it is targeted by ipsilateral horizontal system neurons and contralateral H2 neurons (Schlegel et al., 2024; Dorkenwald et al., 2024; Erginkaya et al., 2025). It has presynapses in the contralateral inferior posterior slope, where it outputs to HSN and HSE cells (Schlegel et al., 2024; Dorkenwald et al., 2024; Erginkaya et al., 2025). It is GABAergic (Eckstein et al., 2024; Erginkaya et al., 2025). There are 2 of these cells per organism (Erginkaya et al., 2025).

Tags:

bIPS

ID: FBbt_20004075

Adult GABAergic Nervous system Visual system primary neuron

Cell type from FlyWire (Schlegel et al., 2024; Dorkenwald et al., 2024), renamed and identified in hemibrain and at light level by Erginkaya et al. (2025). Soma location based on the closest annotated neuropil region. Mapped to FlyWire CB0268 based on body IDs and Codex annotations (2025-05-06).

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## Classification

Relationships

bearer of: bilateral
has soma location: cell body rind of adult gnathal ganglion
receives synaptic input from neuron: horizontal system neuron, lobula plate tangential neuron H2
receives synaptic input in region: inferior posterior slope
sends synaptic output to cell: dorsal giant horizontal cell HSN, equatorial giant horizontal cell HSE
sends synaptic output to region: inferior posterior slope

Alternative Names

Synonym	Scope	Reference
adult bilateral IPS neuron	exact synonym	Erginkaya et al., 2025
PS321	exact synonym	Berg et al., 2025
adult CB0268 neuron	exact synonym	Schlegel et al., 2024
CB0268	exact synonym	Bates et al., 2025
bIPS	exact synonym	Erginkaya et al., 2025
CB0268	exact synonym	Schlegel et al., 2024
CB0268	exact synonym

List all available images of bIPS (8 total)

Thumbnail	Name	Tags
	IPS.35	Nervous_system, primary_neuron, Adult, GABAergic, Visual_system
	IPS.35	Nervous_system, primary_neuron, Adult, GABAergic, Visual_system
	IPS.40	Nervous_system, primary_neuron, Visual_system, GABAergic, Adult
	PS321(hb1932497911)_R (MaleCNS:12072)	Nervous_system, primary_neuron, Adult, GABAergic, Visual_system
	PS321(hb1963869636)_L (MaleCNS:11919)	Nervous_system, primary_neuron, Adult, GABAergic, Visual_system