Cm31a [FBbt_20007256]

Adult central medulla intrinsic neuron of the Cm31a group (Nern et al., 2025). It receives input in the ipsilateral medulla layer M5, medulla layer M6, medulla serpentine layer and medulla layer M8 (Nern et al., 2025). It sends output to the ipsilateral medulla layer M5, medulla layer M6, medulla serpentine layer and medulla layer M8 (Nern et al., 2025). Its predicted neurotransmitter is GABA (Eckstein et al., 2024; Nern et al., 2025). There are approximately 2 of these cells per hemisphere (Nern et al., 2025).

Tags:

Cm31a

ID: FBbt_20007256

Adult GABAergic Nervous system Visual system

Cell type identified in multiple EM datasets (Matsliah et al., 2025; Schlegel et al., 2024; Dorkenwald et al., 2024; Nern et al., 2025). Synapse locations are given where each cell of this type in neuprint has at least 10 connections. Other information from Nern et al. (2025) supplements.

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## Classification

Relationships

receives synaptic input in region: medulla layer M5, medulla layer M6, medulla layer M8, medulla serpentine layer
sends synaptic output to region: medulla layer M5, medulla layer M6, medulla layer M8, medulla serpentine layer

Alternative Names

Synonym	Scope	Reference
Sm41	related synonym	Nern et al., 2025
Cm31a	exact synonym	Nern et al., 2025
Sm41	exact synonym	Schlegel et al., 2024
Cm31b	exact synonym	Berg et al., 2025
Sm41	exact synonym	Bates et al., 2025
CB3841	related synonym	Nern et al., 2025
Cm31b	exact synonym
CB3841	related synonym	Schlegel et al., 2024
Sm41	related synonym	Matsliah et al., 2024

List all available images of Cm31a (8 total)

Thumbnail	Name	Tags
	Cm31b_L (MaleCNS:12513)	Nervous_system, GABAergic, Adult, Visual_system
	Cm31b_R (MaleCNS:10518)	Nervous_system, Adult, GABAergic, Visual_system
	ME.4	Nervous_system, Visual_system, Adult, GABAergic
	ME.4	Nervous_system, Visual_system, Adult, GABAergic
	ME.5	Nervous_system, Visual_system, GABAergic, Adult