Afterimages in fly motion vision

Afterimages in fly motion vision

Afterimage-like effects modulate the responses of fly wide-field motion-sensitive cells following adaptation to stationary or slowly moving patterns. The origin of these afterimages is unclear. They have been interpreted as either the result of adaptation in the early visual system or as a direct consequence of the correlation scheme of motion detection. Using a combination of intracellular rec...

Modelling Fly Motion Vision

Dynamic Adaptation in Fly Motion Vision

Sensory neurons process and convey information about our surroundings, providing the physiological basis for how we interact with the external world. In order to understand neuronal responses we must identify the rules governing how sensory information is encoded. It was proposed more than fifty years ago that neural codes constitute efficient representations of the natural world (Attneave, 195...

Fly Vision: Neural Mechanisms of Motion Computation

A wide range of novel approaches are being used to dissect the visual system of the fly, both the neural networks of motion detection and the performance of these networks under complex natural stimulus conditions.

Features and dimensions: Motion estimation in fly vision

We characterize the computation of motion in the fly visual system as a mapping from the high dimensional space of signals in the retinal photodetector array to the probability of generating an action potential in a motion sensitive neuron. Our approach to this problem identifies a low dimensional subspace of signals within which the neuron is most sensitive, and then samples this subspace to v...