title: Learning the optimal control of coordinated eye and head movements.
abstract: Various optimality principles have been proposed to explain the characteristics of coordinated eye and head movements during visual orienting behavior. At the same time, researchers have suggested several neural models to underly the generation of saccades, but these do not include online learning as a mechanism of optimization. Here, we suggest an open-loop neural controller with a local adaptation mechanism that minimizes a proposed cost function. Simulations show that the characteristics of coordinated eye and head movements generated by this model match the experimental data in many aspects, including the relationship between amplitude, duration and peak velocity in head-restrained and the relative contribution of eye and head to the total gaze shift in head-free conditions. Our model is a first step towards bringing together an optimality principle and an incremental local learning mechanism into a unified control scheme for coordinated eye and head movements.
authors.affiliation: Frankfurt Institute for Advanced Studies (FIAS), Goethe University Frankfurt, Germany. saeb@fias.uni-frankfurt.de
authors.forename: Sohrab
authors.initials: S
authors.lastname: Saeb
authors.forename: Cornelius
authors.initials: C
authors.lastname: Weber
authors.forename: Jochen
authors.initials: J
authors.lastname: Triesch
mesh_terms: D000222:Adaptation, Physiological; D019295:Computational Biology; D005133:Eye Movements / Q000502:physiology*; D019416:Head Movements / Q000502:physiology*; D006801:Humans; D007858:Learning / Q000502:physiology; D008959:Models, Neurological; D012149:Restraint, Physical; D012438:Saccades / Q000502:physiology; D014796:Visual Perception / Q000502:physiology
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