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Human bipeds use quadrupedal coordination during locomotion


Dietz, V; Michel, J (2009). Human bipeds use quadrupedal coordination during locomotion. Annals of the New York Academy of Sciences, 1164(Basic ):97-103.

Abstract

During evolution, the increased influence of a direct cortical-motoneuronal system in parallel with a more specialized hand function might have replaced phylogenetically older systems that organized locomotor movements. However, recent research indicates that interlimb coordination during human locomotion is organized in a way similar to that in the cat. During locomotion, corticospinal excitation of upper-limb motoneurons is mediated indirectly, via propriospinal neurons in the cervical spinal cord. This allows a task-dependent neuronal linkage of cervical and thoracolumbar propriospinal circuits controlling leg and arm movements during human locomotor activities. During obstacle avoidance steps, an anticipatory quadrupedal limb coordination is up-regulated, with an involvement of proximal arm muscles during the acquisition and performance of this precision locomotor task.

Abstract

During evolution, the increased influence of a direct cortical-motoneuronal system in parallel with a more specialized hand function might have replaced phylogenetically older systems that organized locomotor movements. However, recent research indicates that interlimb coordination during human locomotion is organized in a way similar to that in the cat. During locomotion, corticospinal excitation of upper-limb motoneurons is mediated indirectly, via propriospinal neurons in the cervical spinal cord. This allows a task-dependent neuronal linkage of cervical and thoracolumbar propriospinal circuits controlling leg and arm movements during human locomotor activities. During obstacle avoidance steps, an anticipatory quadrupedal limb coordination is up-regulated, with an involvement of proximal arm muscles during the acquisition and performance of this precision locomotor task.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Balgrist University Hospital, Swiss Spinal Cord Injury Center
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:May 2009
Deposited On:29 Sep 2009 09:24
Last Modified:05 Apr 2016 13:21
Publisher:Wiley-Blackwell
ISSN:0077-8923
Additional Information:The definitive version is available at www.blackwell-synergy.com
Publisher DOI:https://doi.org/10.1111/j.1749-6632.2008.03710.x
PubMed ID:19645886

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