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The Head-Neck Sensory Motor System$
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Alain Berthoz, Werner Graf, and P. P. Vidal

Print publication date: 1992

Print ISBN-13: 9780195068207

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780195068207.001.0001

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Kinematic Characteristics of Head Trajectory during Horizontal Head Movements in Monkeys

Kinematic Characteristics of Head Trajectory during Horizontal Head Movements in Monkeys

Chapter:
(p.510) Chapter 80 Kinematic Characteristics of Head Trajectory during Horizontal Head Movements in Monkeys
Source:
The Head-Neck Sensory Motor System
Author(s):

Bertrand Le Goff

Pierre Madic

Philippe Liverneaux

Francis L. Lestienne

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0080

This study concentrates on motor strategies performed by the monkey (Macaca mulatta) for orienting movements in the head-free condition during visual tracking and visual pursuit. This study is based on the assumption that the CNS would induce motor strategies that would reduce the number of degrees of freedom. This is to simplify the central control of movements. The materials and methods of the study include the experimental procedure, the surgery techniques, the electromyographic recording, and the recording of head movements. The results present the involvement of the head in gaze shifts, the head trajectory and muscular synergy, the notable elements of head trajectories, and the kinematic variability and similarity. It is concluded that muscular synergies could be used by the CNS to simply the control of complex structure through motor programs with few independent parameters.

Keywords:   Macaca mulatta, electromyographic recording, head movements, head trajectories, visual pursuit, visual tracking

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