Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal Cord

Part of the development and maturation of the central nervous system (CNS) occurs through interactions with the environment. Through physical activities and interactions with the world, an animal receives considerable sensory information from various sources. These sources can be internally (propri...

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Main Authors: Behdad Tahayori, David M. Koceja
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Neural Plasticity
Online Access:http://dx.doi.org/10.1155/2012/964843
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author Behdad Tahayori
David M. Koceja
author_facet Behdad Tahayori
David M. Koceja
author_sort Behdad Tahayori
collection DOAJ
description Part of the development and maturation of the central nervous system (CNS) occurs through interactions with the environment. Through physical activities and interactions with the world, an animal receives considerable sensory information from various sources. These sources can be internally (proprioceptive) or externally (such as touch and pressure) generated senses. Ample evidence exists to demonstrate that the sensory information originating from large diameter afferents (Ia fibers) have an important role in inducing essential functional and morphological changes for the maturation of both the brain and the spinal cord. The Ia fibers transmit sensory information generated by muscle activity and movement. Such use or activity-dependent plastic changes occur throughout life and are one reason for the ability to acquire new skills and learn new movements. However, the extent and particularly the mechanisms of activity-dependent changes are markedly different between a developing nervous system and a mature nervous system. Understanding these mechanisms is an important step to develop strategies for regaining motor function after different injuries to the CNS. Plastic changes induced by activity occur both in the brain and spinal cord. This paper reviews the activity-dependent changes in the spinal cord neural circuits during both the developmental stages of the CNS and in adulthood.
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spelling doaj-art-efa96e1baeec4d78885ddd48b0ab64382025-02-03T01:07:33ZengWileyNeural Plasticity2090-59041687-54432012-01-01201210.1155/2012/964843964843Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal CordBehdad Tahayori0David M. Koceja1Department of Kinesiology and Program in Neuroscience, Indiana University Bloomington, Bloomington, IN 47405-7109, USADepartment of Kinesiology and Program in Neuroscience, Indiana University Bloomington, Bloomington, IN 47405-7109, USAPart of the development and maturation of the central nervous system (CNS) occurs through interactions with the environment. Through physical activities and interactions with the world, an animal receives considerable sensory information from various sources. These sources can be internally (proprioceptive) or externally (such as touch and pressure) generated senses. Ample evidence exists to demonstrate that the sensory information originating from large diameter afferents (Ia fibers) have an important role in inducing essential functional and morphological changes for the maturation of both the brain and the spinal cord. The Ia fibers transmit sensory information generated by muscle activity and movement. Such use or activity-dependent plastic changes occur throughout life and are one reason for the ability to acquire new skills and learn new movements. However, the extent and particularly the mechanisms of activity-dependent changes are markedly different between a developing nervous system and a mature nervous system. Understanding these mechanisms is an important step to develop strategies for regaining motor function after different injuries to the CNS. Plastic changes induced by activity occur both in the brain and spinal cord. This paper reviews the activity-dependent changes in the spinal cord neural circuits during both the developmental stages of the CNS and in adulthood.http://dx.doi.org/10.1155/2012/964843
spellingShingle Behdad Tahayori
David M. Koceja
Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal Cord
Neural Plasticity
title Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal Cord
title_full Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal Cord
title_fullStr Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal Cord
title_full_unstemmed Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal Cord
title_short Activity-Dependent Plasticity of Spinal Circuits in the Developing and Mature Spinal Cord
title_sort activity dependent plasticity of spinal circuits in the developing and mature spinal cord
url http://dx.doi.org/10.1155/2012/964843
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