Fig 8. Spontaneous switches between up- and down-activity states for components in a nodulus and the contralateral part of the protocerebral bridge.

We detected these components in all flies examined (genotype: UAS_ArcLight and from top to bottom: nsyb-Gal4, nsyb-Gal4, Cha-Gal4, and GMR57C10-Gal4, nsyb-Gal4). The images on the right present the two components (in different colors) at two different z planes (at the level of the noduli and fan-shaped body and at the level of the protocerebral bridge). Note that the flies were not walking in those experiments. See also S24 Fig. Cha-Gal4, choline acetyltransferase-Gal4; nsyb-Gal4, nSynaptobrevin-Gal4.