Figure 5.

shakB² mutation does not abolish lateral excitatory inputs in all glomeruli. (A) A schematic of the antenna-less preparation. Both antennae were removed immediately before experiments, maxillary palps were stimulated with odors, and patch recordings were performed from antennal ePNs lacking direct afferent inputs. (B) In antenna-less wild-type flies, odors evoked lateral excitation in ePNs in these four glomeruli (blue, mean ± SEM). While in DA1 and VA5 glomeruli of antenna-less shakB² mutant flies, these odor-evoked lateral excitatory inputs were abolished and inhibition dominated, ePNs in VC3 and VM5d of shakB² mutant flies showed large lateral excitatory inputs (red, mean ± SEM).