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Las sinapsis eléctricas contribuyen a la retención de la memoria declarativa dependiente del sueño

Gordon B Feld1,2,3,4,5,6, Niels Niethard5,7, Jianfeng Liu5

  • 1Clinical Psychology, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.

The European journal of neuroscience
|January 23, 2026
PubMed
Resumen
Este resumen es generado por máquina.

Las sinapsis eléctricas son cruciales para consolidar los recuerdos verbales durante el sueño. El bloqueo de estas conexiones con mefloquina afectó la retención de la memoria y alteró las oscilaciones del sueño en hombres sanos.

Palabras clave:
sinapsis eléctrica/unión gapmemoriasueñoconsolidación de la memoria de sistemas

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Área de la Ciencia:

  • Neurociencia; Ciencia del Sueño; Investigación de la Memoria

Sus antecedentes:

  • El sueño es vital para la consolidación de la memoria, pero los mecanismos neurofisiológicos subyacentes, en particular el papel de las sinapsis eléctricas (uniones gap), siguen sin estar claros.; Las sinapsis eléctricas facilitan la comunicación neuronal directa, lo que podría influir en las oscilaciones cerebrales durante el sueño.

Objetivo del estudio:

  • Investigar el papel de las sinapsis eléctricas en la consolidación de la memoria dependiente del sueño.; Determinar si el bloqueo de las sinapsis eléctricas afecta la retención de la memoria declarativa verbal y sensoriomotora.

Principales métodos:

  • Hombres jóvenes sanos recibieron mefloquina (bloquea las sinapsis eléctricas) o placebo antes de dormir, antes de la vigilia o después de dormir.; Se evaluó la retención de la memoria de pares de palabras y secuencias sensoriomotoras.; Los registros de EEG analizaron el acoplamiento de husos del sueño y oscilaciones lentas.; Los modelos de ratas examinaron la actividad de ondas agudas/rizos del hipocampo.

Principales resultados:

  • La administración de mefloquina antes de dormir afectó la retención de la memoria declarativa verbal y alteró el acoplamiento de los husos del sueño a las oscilaciones lentas.; La retención de la memoria no se vio afectada cuando la mefloquina se administró antes de la vigilia o después de dormir.; La retención de la memoria sensoriomotora se vio mejorada por la mefloquina, independientemente del sueño.; La mefloquina no alteró la actividad de ondas agudas/rizos del hipocampo en ratas.

Conclusiones:

  • Las sinapsis eléctricas apoyan específicamente la consolidación dependiente del sueño de la memoria declarativa verbal.; El acoplamiento eléctrico mejora la coordinación oscilatoria entre los husos del sueño y las oscilaciones lentas, crucial para la consolidación de la memoria.; Los efectos de la mefloquina en la memoria sensoriomotora sugieren vías de consolidación distintas.