Properties of neuronal facilitation that improve target tracking in natural pursuit simulations.

ABSTRACT: Although flying insects have limited visual acuity (approx. 1°) and relatively small brains, many species pursue tiny targets against cluttered backgrounds with high success. Our previous computational model, inspired by electrophysiological recordings from insect 'small target motion detector' (STMD) neurons, did not account for several key properties described from the biological system. These include the recent observations of response 'facilitation' (a slow build-up of response to targets that move on long, continuous trajectories) and 'selective attention', a competitive mechanism that selects one target from alternatives. Here, we present an elaborated STMD-inspired model, implemented in a closed loop target-tracking system that uses an active saccadic gaze fixation strategy inspired

SUBMITTER: Bagheri ZM 

PROVIDER: S-EPMC4528576 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature