Separating neural influences from peripheral mechanics: the speed-curvature relation in mechanically constrained actions | Zendy

James Hermus | Zendy; Joseph A. Doeringer | Zendy; Dagmar Sternad | Zendy; Neville Hogan | Zendy

Open Access

Separating neural influences from peripheral mechanics: the speed-curvature relation in mechanically constrained actions

Author(s) -

James Hermus,

Joseph A. Doeringer,

Dagmar Sternad,

Neville Hogan

Publication year - 2020

Publication title -

journal of neurophysiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.302

H-Index - 245

eISSN - 1522-1598

pISSN - 0022-3077

DOI - 10.1152/jn.00536.2019

Subject(s) - kinematics , curvature , computer science , biomechanics , trajectory , control theory (sociology) , motor control , physics , artificial intelligence , geometry , classical mechanics , mathematics , neuroscience , control (management) , psychology , astronomy , thermodynamics

Physically interacting with kinematic constraints is commonplace in everyday actions. We report a study of humans turning a crank, a circular constraint that imposes constant hand path curvature and hence should suppress variations of hand speed due to the power-law speed-curvature relation widely reported for unconstrained motions. Remarkably, we found that, when peripheral biomechanical factors are removed, a speed-curvature relation reemerges, indicating that it is, at least in part, of neural origin.

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