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The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
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El control del cerebro medio de la orientación tridimensional de la cabeza.

Eliana M Klier1, Hongying Wang, Alina G Constantin

  • 1CIHR Group for Action and Perception, York Centre for Vision Research and Department of Psychology, York University, Toronto, Ontario M3J 1P3, Canada.

Science (New York, N.Y.)
|February 16, 2002
PubMed
Resumen

El núcleo intersticial de Cajal integra las señales de postura de la cabeza en el cerebro. Los desequilibrios en esta área pueden causar torticolis, una afección que afecta la posición de la cabeza.

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Área de la Ciencia:

  • La neurociencia es la neurociencia.
  • El control del motor es el control del motor.
  • Oftalmología Oftalmología.

Sus antecedentes:

  • El control neuronal de la postura de la cabeza es poco conocido.
  • Se sabe que el núcleo intersticial de Cajal integra comandos de velocidad ocular para el control de la posición del ojo.

Objetivo del estudio:

  • Para investigar los mecanismos neuronales que controlan la postura de la cabeza.
  • Para identificar las posibles causas de los síndromes clínicos como el torticolis.

Principales métodos:

  • Estimulación eléctrica de las zonas del cerebro medio en monos sin cabeza.
  • Inactivación reversible de las zonas del cerebro medio en monos sin cabeza.

Principales resultados:

  • El núcleo intersticial de Cajal fue identificado como un integrador neuronal para la postura de la cabeza.
  • La estimulación eléctrica y la inactivación proporcionaron información sobre su función.

Conclusiones:

  • El núcleo intersticial de Cajal juega un papel crítico en el mantenimiento de la postura de la cabeza.
  • Los desequilibrios bilaterales en el núcleo intersticial de Cajal pueden ser la base de la torticolis.