ER1 [FBbt_00003650]

R-neuron that passes through the ellipsoid body canal, entering the neuropil from the posterior part of the canal and projecting outwards and slightly anteriorly (Omoto et al., 2018). Its terminals define the boundary between the inner and outer posterior layers of the ellipsoid body (Omoto et al., 2018). Unlike most other R-neurons, its dendritic branches are found on the lateral surface of the lateral accessory lobe, rather than the bulb (Omoto et al., 2018).
ER1 ER1 ER1 ER1

ER1

ID: FBbt_00003650

Adult GABAergic lineage EBa1 DALv2 secondary neuron

R-neuron that passes through the ellipsoid body canal, entering the neuropil from the posterior part of the canal and projecting outwards and slightly anteriorly (Omoto et al., 2018). Its terminals define the boundary between the inner and outer posterior layers of the ellipsoid body (Omoto et al., 2018). Unlike most other R-neurons, its dendritic branches are found on the lateral surface of the lateral accessory lobe, rather than the bulb (Omoto et al., 2018).

This R1 neuron, identified by Renn et al, (1999), is now thought to be distinct from the R1 neuron identified by Hanesch et al. (1989), which is most likely one of the R3 neurons (Omoto et al., 2018). Ofstad et al. (2011) use two drivers stated to target R1 neurons, both of which were shown to target subclasses of R3, and not R1, by Omoto et al. (2018).

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## Classification

Relationships

Alternative Names

Synonym Scope Reference
EBIRP I-O-LAL.s narrow synonym Franconville et al., 2018
L-Em neuron narrow synonym Franconville et al., 2018
L-Ei neuron narrow synonym Franconville et al., 2018
R1 neuron exact synonym Renn et al., 1999
ER1 exact synonym Scheffer et al., 2020
ER1_b exact synonym Scheffer et al., 2020
ebR1 exact synonym
ER1_a exact synonym Scheffer et al., 2020
EBMRP I-O-LAL.s narrow synonym Franconville et al., 2018
ER1 exact synonym Schlegel et al., 2024