Visual input to the efferent control system of a fly's "gyroscope".

@article{Chan1998VisualIT,
  title={Visual input to the efferent control system of a fly's "gyroscope".},
  author={Wai Pang Chan and Frederick R. Prete and Michael H. Dickinson},
  journal={Science},
  year={1998},
  volume={280 5361},
  pages={
          289-92
        }
}
Dipterous insects (the true flies) have a sophisticated pair of equilibrium organs called halteres that evolved from hind wings. The halteres are sensitive to Coriolis forces that result from angular rotations of the body and mediate corrective reflexes during flight. Like the aerodynamically functional fore wings, the halteres beat during flight and are equipped with their own set of control muscles. It is shown that motoneurons innervating muscles of the haltere receive strong excitatory… 

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...

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