has soma location fasciculates with receives synaptic input in region sends synaptic output to region receives synaptic input throughout supraesophageal ganglion neuron adult protocerebral bridge 1 glomerulus-fan-shaped body-lateral accessory lobe neuron https://github.com/FlyBase/drosophila-anatomy-developmental-ontology/issues/1097 FlyBrain_NDB:10254 pb-fb-idfp neuron heavy fibers HFS PFI neuron VFB:FBbt_00003635 horizontal fiber system neuron Adult central complex neuron that connects a glomerulus of the protocerebral bridge (PB) to a column of the fan-shaped body (FB) and then exits the FB laterally to arborize in the lateral accessory lobe (Hanesch et al., 1989; Lin et al., 2013; Wolff et al., 2015; Hulse et al., 2021). Dendritic arborizations are found throughout the targeted PB glomerulus, but in some cases may extend into neighboring glomeruli (Wolff et al., 2015; Hulse et al., 2021). Arbors in the FB are mainly postsynaptic or mixed and arbors outside of the PB and FB are mainly presynaptic for most of these cell types (Hulse et al., 2021). These neurons follow an approximate nine-column organization in the fan-shaped body (Hulse et al., 2021). pb-fb-vbo neuron fly_anatomy.ontology FBbt:00003635 The specific 'horizontal fiber system neurons' described by Hanesch et al. (1989) probably correspond to PFR (protocerebral bridge-fan-shaped body-round body) type a neurons (Wolff et al., 2015). Lin et al. (2013) consider HFS to be equivalent to their PFI neurons - any neuron connecting PB, FB and IDFP (lateral accessory lobe/crepine). protocerebral bridge glomerulus fan-shaped body adult lateral accessory lobe pb-fb tract cell body rind of adult protocerebral bridge fan-shaped body extrinsic columnar neuron