Saccadic flight strategy facilitates collision avoidance: closed-loop performance of a cyberfly

Biological cybernetics
Jens Peter LindemannM Egelhaaf

Abstract

Behavioural and electrophysiological experiments suggest that blowflies employ an active saccadic strategy of flight and gaze control to separate the rotational from the translational optic flow components. As a consequence, this allows motion sensitive neurons to encode during translatory intersaccadic phases of locomotion information about the spatial layout of the environment. So far, it has not been clear whether and how a motor controller could decode the responses of these neurons to prevent a blowfly from colliding with obstacles. Here we propose a simple model of the blowfly visual course control system, named cyberfly, and investigate its performance and limitations. The sensory input module of the cyberfly emulates a pair of output neurons subserving the two eyes of the blowfly visual motion pathway. We analyse two sensory-motor interfaces (SMI). An SMI coupling the differential signal of the sensory neurons proportionally to the yaw rotation fails to avoid obstacles. A more plausible SMI is based on a saccadic controller. Even with sideward drift after saccades as is characteristic of real blowflies, the cyberfly is able to successfully avoid collisions with obstacles. The relative distance information contained in t...Continue Reading

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Citations

Mar 8, 2013·PLoS Computational Biology·Andrea CensiMichael H Dickinson
Dec 14, 2011·Sensors·Birthe BabiesRalf Möller
Sep 13, 2011·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Y-S HungM R Ibbotson
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Aug 20, 2014·Frontiers in Computational Neuroscience·Alexander SchwegmannMartin Egelhaaf
Jun 29, 2017·Arthropod Structure & Development·Julien R Serres, Franck Ruffier
Dec 28, 2017·PLoS Computational Biology·Jinglin LiMartin Egelhaaf
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Jun 23, 2012·The Journal of Experimental Biology·Roland KernMartin Egelhaaf
May 18, 2010·The Journal of Experimental Biology·Finlay J StewartBarbara Webb
Jun 29, 2010·The Journal of Experimental Biology·Bart R H GeurtenMartin Egelhaaf

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