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A model of reaching via subriemannian geodesics in Engel-type group

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arxiv 2301.05765 v1 pith:ZIMPU4HZ submitted 2023-01-13 math.OC

classification math.OC
keywords reachingwillgeodesicsmodelgeometricmovementsselectivesub-riemannian
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In this paper, we propose a model of arm reaching movements expressed in terms of geodesics in a sub-Riemannian space. We will choose a set of kinematic variables to which motor cortical cells are selective with the purpose of modelling the specific task of reaching. Minimizing trajectories will be recovered as suitable geodesics of the geometric spaces arising from the selective behaviour of M1 neurons. We will then extend this model by including the direction of arm movement. On this set, we will define a suitable sub-Riemannian metric able to provide a geometric interpretation of two-dimensional task-dependent arm reaching movements.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Abelian instances of nonabelian symplectic reduction

    math.SG 2025-10 conditional novelty 6.0 of 10

    Symplectic reduction by a Lie group G coincides with reduction by an abelian normal subgroup A whenever the two reduced spaces have equal dimension, provided the momentum isotropy group is connected.

  2. A sub-Riemannian model of neural states in the primary motor cortex

    q-bio.NC 2024-12 reject novelty 5.0 of 10

    A sub-Riemannian distance on movement fragments is proposed to reproduce the eight motor-cortex neural states of Kadmon-Harpaz et al., but the reported tests are synthetic only.

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