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Hierarchy of Motor Control01:18

Hierarchy of Motor Control

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Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
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Spinal Cord Electrophysiology
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Assembly and function of spinal circuits for motor control.

Catarina Catela1, Maggie M Shin1, Jeremy S Dasen1

  • 1Neuroscience Institute and Department of Neuroscience and Physiology, New York University School of Medicine, New York, NY 10016;

Annual Review of Cell and Developmental Biology
|September 23, 2015
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Summary

Spinal cord circuits control vertebrate movement by generating diverse neuronal subtypes. Developmental programs specify these neurons, guiding motor circuit assembly and function for complex behaviors.

Keywords:
central pattern generatorinterneuronlocomotionmotor neuronsensory neurontranscription factor

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Motor Control

Background:

  • Vertebrate movement control relies on complex neural communication across the brain and spinal cord.
  • Spinal cord networks, composed of discrete neuronal populations, are crucial for basic locomotor behaviors.
  • Neuronal subtype specification and circuit assembly are key to motor output organization.

Purpose of the Study:

  • To review the impact of developmental programs on motor behaviors.
  • To explore how neuronal subtypes are specified and motor circuits assembled.
  • To connect spinal circuit connectivity with function in motor behavior encoding.

Main Methods:

  • Literature review of recent studies on motor circuit development.
  • Analysis of research on neuronal subtype specification.
  • Synthesis of findings on guidance and synaptic specificity in circuit assembly.

Main Results:

  • Developmental programs generate functionally diverse neuronal subtypes.
  • Progress in understanding neuronal specification and guidance mechanisms.
  • Emerging principles linking locomotor circuit connectivity to function.

Conclusions:

  • Developmental programs are fundamental in specifying motor behaviors.
  • Understanding neuronal subtypes and circuit assembly is crucial for motor control.
  • Research is advancing our knowledge of how spinal circuits encode sophisticated motor behaviors.