The ellipsoid body, a doughnut-shaped part of the fly brain, is essential for visual working memory. Gaseous second messengers establish a functional ellipsoid body and act as a short-term aid in orientation behavior.
Zars, T. (2017, March 6). Working Memory: It’s a Gas, Gas, Gas. Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2017.01.005