part of anterior optic tubercle synaptic neuropil subdomain small unit of anterior optic tubercle 2021-04-21T14:29:51Z lower unit of AOTU FBbt:00051217 lower unit of anterior optic tubercle fly_anatomy.ontology VFB:FBbt_00051217 AOTUsu Region of the adult anterior optic tubercle that receives input from neurons that project from the medulla (Timaeus et al., 2020). It consists of the anterior optic tubercle excluding the medial zone (large unit) (Timaeus et al., 2020). It can be further subdivided based on the innervation patterns of medulla-tubercle and tubercle-bulb neurons (Timaeus et al., 2020). AOTU SU