Postural and locomotor control systems and their interactions. Shigemi MORI 1 1Department of Physiology, Asahikawa Medical College pp.271-285
Published Date 1986/4/10
DOI https://doi.org/10.11477/mf.1431905781
  • Abstract
  • Look Inside

To initiate and terminate locomotor movements both in the biped and quadruped, a smooth transition from and to standing is necessary, standing being another active motor behavior. Such a transition is possibly established at least by two different control mechanisms; one is "neuromechanical" or "automatic" control mechanisms and the other "volitional" control mechanisms. The decerebrate locomotor preparation seems to be mainly provided with automatic control mechanisms for the regulation of both posture and locomotion. Under appropriate circumstances, it exhibits machine-like locomotor movements with necessary postural adjustments. In contrast, an intact cat without any restraint is able to circumbent all obstacles and anticipates necessary conditions, and deals with unexpected purturbations by means of reflex adaptation of posture. For locomotion, therefore, functional integration of neuronal structures involved in postural control and locomotor control is desirable. Thus, the question arises as to whether or not separate systems exist for postural control and for initiation of locomotion. Sherrington (1910) formulated this problem as "posture follows movement like a shadow". However, a relatively little infor-mation has been available as to the interactions between posture and locomotion.

Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.


電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院