Studying sensorimotor integration in insects

Sensorimotor integration is a field rich in theory backed by a large body of psychophysical evidence. Relating the underlying neural circuitry to these theories has, however, been more challenging. With a wide array of complex behaviors coordinated by their small brains, insects provide powerful model systems to study key features of sensorimotor integration at a mechanistic level. Insect neural circuits perform both hard-wired and learned sensorimotor transformations. They modulate their neural processing based on both internal variables, such as the animal's behavioral state, and external ones, such as the time of day. Here we present some studies using insect model systems that have produced insights, at the level of individual neurons, about sensorimotor integration and the various ways in which it can be modified by context.

► Insect model systems reveal the neural mechanisms of sensorimotor integration. ► Fly gaze stabilization illustrates cellular basis of visual-motor transformation. ► Fly motion-vision neurons modulate sensitivity and tuning based on behavioral state. ► Cricket song and audition circuit demonstrate corollary discharge at cellular level. ► Locust sky-compass neurons change tuning to match diurnal change in sun's elevation.