Olfactory system neuroanatomy

Graphical glossary of adult Drosophila olfactory neuroanatomy and the canonical neuron classes that make up the olfactory pathway, from Figure 1 of Schlegel et al. (2021). The left-hand schematic shows the feed-forward course of olfactory information from antenna and antennal lobe (AL) to mushroom body (MB) and lateral horn (LH), with antennal-lobe receptor neurons (ORNs / ALRNs), antennal lobe local neurons (ALLNs), uniglomerular and multiglomerular projection neurons (uPNs, mPNs), Kenyon cells (KCs), MBONs, DANs, lateral horn neurons (LHNs / LHLNs / LHCENT), and wedge projection neurons (WEDPNs). Click a labelled element to open the corresponding term in Virtual Fly Brain.
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<!-- Left-hand schematic: brain regions -->
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<!-- Left-hand schematic: neuron labels -->
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<!-- Middle column: neuron class definitions (linkable text rectangles) -->
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https://doi.org/10.7554/eLife.66018

Figure reproduced under CC-BY 4.0 from Schlegel P, Bates AS, Stürner T, Jagannathan SR, Drummond N, Hsu J, Serratosa Capdevila L, Javier A, Marin EC, Barth-Maron A, Tamimi IF, Li F, Rubin GM, Plaza SM, Costa M, Jefferis GSXE (2021). Information flow, cell types and stereotypy in a full olfactory connectome. eLife 10:e66018.


Last modified May 7, 2026: Add olfactory system neuroanatomy diagram (Schlegel et al. 2021) (651c5fa)