ScerGAL4VT025803 drives expression in small subsets of cells in the brain and ventral nerve cord, including the larval Wave neuron.
Optogenetic activation (using Cnoc\ChR1Cs.IVS.20xUAS.Venus with 660 nm (red) light) of Scer\GAL4VT025803 cells in larvae significantly induces backwards locomotion, compared to controls, and can reverse the propagation of muscle contraction part way through peristalsis; the increase in backwards locomotion is significantly suppressed when expression is restricted to a smaller subset of cells using Scer\GAL80tsh-GAL80 or Scer\GAL80ChAT.3.3P.