Spatial Encoding of Translational Optic Flow in Planar Scenes by Elementary Motion Detector Arrays.

ABSTRACT: Elementary Motion Detectors (EMD) are well-established models of visual motion estimation in insects. The response of EMDs are tuned to specific temporal and spatial frequencies of the input stimuli, which matches the behavioural response of insects to wide-field image rotation, called the optomotor response. However, other behaviours, such as speed and position control, cannot be fully accounted for by EMDs because these behaviours are largely unaffected by image properties and appear to be controlled by the ratio between the flight speed and the distance to an object, defined here as relative nearness. We present a method that resolves this inconsistency by extracting an unambiguous estimate of relative nearness from the output of an EMD array. Our method is suitable for estimation of re

SUBMITTER: Lecoeur J 

PROVIDER: S-EPMC5895815 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature