Model describing the non-linear interaction of air speed and optic flow.
The plots indicated by dashed lines show the input-output relationships at various stages of the model. (a) Response to air speed, (b) Modulation of gain of the optic flow path way by air speed, (c) Response to optic flow, (d) Measured response, (e) Predicted response. Abbreviations: AS – air speed, OF – optic flow, AbP – Abdomen pitch. Model details are shown in Supp. 5.a.