has characteristic has soma location receives synaptic input in region sends synaptic output to region receives synaptic input from neuron adult optic lobe neuron medulla layer M1 medulla layer M3 medulla serpentine layer medulla layer M8 posterior lateral protocerebrum adult visual projection neuron cell body rind of adult anterior medulla medulla-lobula visual projection neuron 1 2022-03-15T14:14:29Z MTe50 mapped to ML-VPN1 in Bates et al. (2025) - doi:10.1101/2025.07.31.667571, but cell numbers do not match. FBbt:00052138 fly_anatomy.ontology Visual projection neuron with its cell body near the anterior proximal medulla and an axonal projection following that of the medulla-lobula neuron 1 (Kind et al., 2021). It has wide-field dendritic arborization in the medulla, spanning tens of columns, ramifying at the border of layers M7/M8, then sending vertical projections to M3 and then to M1, and expanding laterally in each of these layers (Kind et al., 2021). Its main synaptic input from photoreceptors is from R8 cells of pale ommatidia (Kind et al., 2021). It projects to the ipsilateral posterior lateral protocerebrum, innervating a region just behind the optic glomeruli (Kind et al., 2021). There are approximately 65 of these cells per optic lobe (Kind et al., 2021). VFB:FBbt_00052138 ML-VPN1 ML-VPN1 photoreceptor cell R8 of pale ommatidium unilateral