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Alteraciones funcionales cerebrales reversibles inducidas por la exposición a corto plazo a gran altitud
Xinjuan Zhang1,2,3,4, Weiwei Xie5,6, Cunxiu Fan7
1School of Education and Psychology, Minnan Normal University, Zhangzhou, 363000, China.
Brain imaging and behavior
|February 23, 2026
Resumen
La exposición a corto plazo a gran altitud altera la función cerebral y la fisiología. Estos cambios son reversibles, con la función cerebral y los marcadores sanguíneos volviendo a la normalidad después de dos meses a baja altitud.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Medicina de la Altitud Medicina de la Altitud
- Fisiología Fisiología Fisiología.
Sus antecedentes:
- La hipoxia de gran altitud causa cambios fisiológicos y neuronales.
- La dinámica de los cambios en la función cerebral después de una exposición a corto plazo no se entiende completamente.
Objetivo del estudio:
- Investigar los efectos fisiológicos y neuronales de la exposición a corto plazo a gran altitud.
- Evaluar la recuperación de la función cerebral después de regresar a baja altitud.
Principales métodos:
- Los parámetros hematológicos y la actividad funcional cerebral se midieron en tres momentos: antes del ascenso, el día 30 a gran altitud y dos meses después del ascenso.
- Homogeneidad regional evaluada (ReHo), conectividad homotópica espejada voxel (VMHC) y conectividad funcional (FC).
Principales resultados:
- La exposición a gran altitud aumentó el recuento de glóbulos rojos y la hemoglobina, disminuyó SpO2 y alteró ReHo, VMHC y FC en múltiples redes cerebrales (visual, sensorimotor, subcortical, frontoparietal, atención ventral, modo predeterminado).
- Se observaron diferencias significativas en ReHo en el cerebelo, el tronco cerebral, el giro fusiforme, lingüístico y precentral.
- VMHC mostró diferencias significativas en las cortes occipital y postcentral.
Conclusiones:
- Las medidas fisiológicas y funcionales del cerebro demostraron un patrón de recuperación similar.
- La función cerebral y los índices fisiológicos volvieron a los niveles basales dos meses después de regresar a baja altitud.
- Proporciona evidencia de la reversibilidad de las alteraciones funcionales del cerebro después de una exposición a corto plazo a gran altitud.
Palabras clave:
Alta altitud de gran altitud.La hipoxia es la falta de oxígeno.La plasticidad neural.La red sensoriomotriz es una red sensoriomotriz.Más Videos Relacionados
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