Circuit diagram of the lateral horn

Schematic overview of olfactory and multimodal input to the adult lateral horn (LH) and the major target neuropils of LH output neurons, based on Frechter et al. (2019). Panel A shows the four antennal-lobe tracts (mALT, mlALT, tALT, lALT) by which projection neurons (PNs) reach the LH. Panel B groups PN axonal arbours in the LH by presumptive sensory modality: excitatory uniglomerular olfactory, inhibitory olfactory, multiglomerular olfactory, multiglomerular + gustatory, gustatory, mechanosensory, thermosensory, and neuromodulatory. Panel E shows the major (AVLP, PVLP, SLP, SIP, SMP) and minor (LH, MB calyx, SCL, IB, ICL, SPS, CRE) target neuropils of core LH output neurons (LHONs). Click a labelled element to open the corresponding term in Virtual Fly Brain.