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When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
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Updated: Feb 13, 2026

Preparation of Peripheral Nerve Stimulation Electrodes for Chronic Implantation in Rats
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La estimulación de los nervios periféricos sincronizada con la estimulación cerebral facilita la función

Yuki Maruyama1, Sumiya Shibata2, Sho Kojima2

  • 1Graduate School, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-ku, Niigata-shi, Niigata 950-3198, Japan; Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-ku, Niigata-shi, Niigata 950-3198, Japan.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
|February 11, 2026
PubMed
Resumen

La estimulación sincronizada periferocentral (pcSS) mejoró la función somatosensorial al mejorar la discriminación de dos puntos y los potenciales evocados somatosensoriales. Los efectos dependieron del tiempo de estimulación de los nervios periféricos en relación con la estimulación transcraneal de corriente alterna (TACS).

Palabras clave:
Estimulación del nervio mediano.Estimulación sincronizada periferocentral y periférica (pcSS)El potencial evocado somatosensorial evocó el potencial.Estimulación transcraneal de corriente alterna por corriente alterna.Discriminación de dos puntos de la ley.

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Área de la Ciencia:

  • La neurociencia es la neurociencia.
  • Ingeniería Biomédica Ingeniería Biomédica.
  • Ciencias de la Rehabilitación Ciencias de la Rehabilitación.

Sus antecedentes:

  • El desarrollo de nuevas técnicas de neuromodulación es crucial para mejorar la función somatosensorial.
  • La sincronización de la estimulación nerviosa periférica con la estimulación transcraneal de corriente alterna (tACS) ofrece un nuevo enfoque.

Objetivo del estudio:

  • Investigar los efectos neuromoduladores de un nuevo sistema de estimulación periferocentral sincronizada (pcSS).
  • Evaluar el impacto de la PCSS en la función somatosensorial y la excitabilidad de la corteza somatosensorial primaria (S1).

Principales métodos:

  • Veinte adultos sanos participaron en el estudio.
  • pcSS implicó estimular el nervio mediano en fases específicas (0 y π) sincronizadas con tACS aplicado a la derecha S1.
  • La función somatosensorial se evaluó utilizando la prueba de discriminación de dos puntos (TPD), y la excitabilidad S1 se midió a través de potenciales evocados somatosensoriales (SEPs).

Principales resultados:

  • pcSS con fase 0 disminuyó significativamente el umbral de TPD y aumentó la amplitud de SEP, lo que indica una mejora de la función somatosensorial y la excitabilidad S1.
  • No se observaron cambios significativos con la PCSS en la fase π o con la estimulación del nervio mediano sola.

Conclusiones:

  • Los efectos neuromoduladores de la PCSS son dependientes de la fase, lo que pone de relieve la importancia del tiempo preciso.
  • pcSS demuestra potencial como una nueva intervención para la rehabilitación somatosensorial.