develops from has synaptic IO in region receives synaptic input from neuron medulla layer M1 medulla layer M2 medulla layer M3 medulla layer M4 medulla layer M5 medulla layer M6 medulla serpentine layer medulla intrinsic columnar neuron inner photoreceptor cell Notch OFF hemilineage secondary neuron immature medulla intrinsic neuron Mi15 adult cholinergic neuron adult dopaminergic neuron optic lobe narrow field columnar neuron medulla intrinsic neuron Mi15 2015-11-10T17:28:29Z VFB:FBbt_00111285 medullary intrinsic neuron Mi15 Mi15 Medulla intrinsic unicolumnar neuron whose primary neurite splits in the M1 layer, sending vertical branches as far as the M7 layer (Takemura et al., 2013; Takemura et al., 2015; Kind et al., 2021). A process also extends from the distal medulla into the first optic chiasma, where it receives around half of its photoreceptor input (Kind et al., 2021). In central columns, these cells selectively receive input from R8, rather than R7 photoreceptors, but selectivity is not maintained in Mi15 cells of the dorsal rim area (Kind et al., 2021). It seems to be both cholinergic and dopaminergic (Davis et al., 2020). FBbt:00111285 Mi15 fly_anatomy.ontology