electrically_synapsed_to vertical system neuron vertical system neuron 3 vertical system neuron 4 VS4 VFB:FBbt_00007520 FBbt:00007520 Electrical coupling was shown indirectly by neurobiotin dye coupling in vertical system cells labelled using the P{GAL4}DB331 driver (FBti0115113) (Joesch et al., 2008). Due to its morphology and functional similarity, this cell is judged to be homologous to the VS2-VS6 cells in the blowfly (Scott et al., 2002). fly_anatomy.ontology Vertical system neuron with both dorsally and ventrally sweeping major branches and whose dorsal dendritic tree extends anteriorly and posteriorly. Unlike VS3, its dorsal dendrites curve so that they extend directly dorsally or even medially and have only a few simple anterior projections (Scott et al., 2002). Its receptive field of vision is in between the receptive fields of VS3 (more frontal) and VS5 (more lateral). It is electrically coupled to VS3 and VS5 (Joesch et al., 2008). VS4 neuron VS4 LPT08 vertical system neuron 5