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La jerarquía de los ritmos orofaciales se revela a través del latido y la respiración
Jeffrey D Moore1, Martin Deschênes, Takahiro Furuta
1Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA.
Nature
|April 30, 2013
Resumen
Los comportamientos de mordisqueo y olfateo de los roedores están coordinados por centros respiratorios en la médula ventral. Este circuito neuronal asegura que los movimientos faciales como el pestañeo estén sincronizados con los patrones de respiración.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Biología del comportamiento Biología del comportamiento.
- El control del motor es el control del motor.
Sus antecedentes:
- Arrojar y oler son comportamientos exploratorios clave en los roedores.
- Los mecanismos neuronales que coordinan estos patrones motores orofaciales no se comprenden bien.
Objetivo del estudio:
- Para investigar el control neuronal de los comportamientos coordinados de golpear y oler.
- Identificar las regiones cerebrales responsables de generar y sincronizar estos movimientos con la respiración.
Principales métodos:
- Técnicas de trazado anatómico.
- Análisis del comportamiento de las acciones exploratorias de roedores.
- Registros electrofisiológicos de la actividad neuronal.
- Manipulaciones farmacológicas de los circuitos neuronales.
Principales resultados:
- Identificó una región medular ventral específica que impulsa rítmicamente la prolongación de vibrissae.
- Se demostró que el complejo pre-Bötzinger restablece la salida neuronal de esta región durante la inspiración.
- Se estableció un vínculo directo entre los ciclos respiratorios y la coordinación de golpear / oler, con una relación uno a uno durante el olfato de alta frecuencia.
Conclusiones:
- Los centros respiratorios en la médula ventral coordinan el movimiento y el olfato.
- El complejo pre-Bötzinger actúa como una señal de sincronización crítica para los patrones motores orofaciales.
- Los núcleos respiratorios pueden servir como un reloj maestro para los comportamientos coordinados por la respiración.
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