Serotonin selectively modulates visual responses of object motion detectors in <i>Drosophila</i>.

ABSTRACT: Serotonin (5-HT) is a hormonal messenger that confers state-level changes upon the nervous system in both humans and flies. In Drosophila, lobula columnar (LC) cells are feature-detecting neurons that project from the optic lobe to the central brain, where each population forms an anatomically distinct glomerulus with heterogeneous synaptic partners. Here, we investigated serotonin's effect on two LC populations with different 5-HT receptor expression profiles. Receptor expression does not predict neuromodulatory effects. LC15 expresses inhibitory 5-HT1A and 5-HT1B receptors, yet serotonin increases the amplitude of calcium responses to visual stimuli. LC12 expresses inhibitory 5-HT1A and excitatory 5-HT2A receptors, yet serotonin application does not influence visual responses. Ser

SUBMITTER: Bertsch DJ 

PROVIDER: S-EPMC12431381 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature