Video Experimental Relacionado
Updated: Jul 1, 2025
05:28
Electrophysiology on Isolated Brainstem-spinal Cord Preparations from Newborn Rodents Allows Neural Respiratory Network Output Recording
Published on: November 19, 2015
8.6K
Control del tronco cerebral de la vocalización y su coordinación con la respiración
Jaehong Park1,2, Seonmi Choi1, Jun Takatoh1
1Department of Brain and Cognitive Sciences, McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Science (New York, N.Y.)
|March 7, 2024
Resumen
Los investigadores identificaron neuronas específicas para la vocalización en el núcleo retroambiguo (RAmVOC) que controlan el cierre de las cuerdas vocales y las vocalizaciones ultrasónicas del ratón (USV). Estas neuronas VOC coordinan la vocalización con la respiración, con la inspiración prevaleciendo sobre el cierre de las cuerdas vocales.
Área de la Ciencia:
- La neurociencia
- Investigación de la vocalización
- Control de las vías respiratorias
Sus antecedentes:
- La fonación requiere un control preciso de los músculos laríngeos coordinado con la respiración.
- Los mecanismos neuronales para la coordinación vocal-laríngea-respiratoria no se comprenden completamente.
Objetivo del estudio:
- Identificar los circuitos neuronales que controlan la adducción de las cuerdas vocales y las vocalizaciones ultrasónicas (USV) en ratones.
- Investigar el papel de las neuronas del núcleo retroambiguo en la producción vocal y la coordinación respiratoria.
Principales métodos:
- Identificación de las neuronas premotoras específicas de la vocalización en el núcleo retroambiguo (RAmVOC) en ratones.
- Manipulación experimental de la actividad neuronal y las sinapsis inhibidoras.
- Análisis de los patrones de vocalización y coordinación de las fases respiratorias.
Principales resultados:
- Las neuronas RAmVOC son necesarias y suficientes para el cierre de las cuerdas vocales y la producción de USV.
- La duración de la activación de RAmVOC influye en la longitud de la sílaba USV y la expiración.
- La entrada inhibidora de las puertas del complejo preBötzinger RAm durante la inspiración, asegurando la coordinación vocal-respiratoria.
Conclusiones:
- El núcleo retroambiguo contiene neuronas premotoras excitadoras cruciales para la vocalización.
- Un circuito neuronal que involucra RAm y sus entradas inhibidoras gobierna la coordinación vocal-respiratoria.
- La interrupción de la puerta inhibidora conduce a la descoordinación entre la vocalización y la respiración.
Videos de Conceptos Relacionados
01:22Physiology of Respiration II: Neurogenic Control of Respiration
643
The neurogenic control of respiration coordinates various neural networks and pathways to regulate breathing rate and depth, meeting the body's oxygen and carbon dioxide exchange requirements. This system adapts to physiological and environmental conditions, ensuring optimal breathing patterns.
Central Control
The brainstem is the primary site of central control, hosting respiratory centers:
Central Control
The brainstem is the primary site of central control, hosting respiratory centers:
643
01:18Neural Control of Respiration
2.4K
The neural regulation of respiration is a meticulously coordinated process primarily controlled by the respiratory centers located within the brainstem. These centers, composed of specialized neurons, transmit nerve impulses that control the contraction and relaxation of our respiratory muscles.
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
2.4K
01:23Physiological Control of Respiration
2.1K
Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
2.1K
01:21Brainstem: Control Centers of Medulla
1.6K
The medulla oblongata is a crucial part of the brainstem responsible for controlling various autonomic and involuntary functions. It contains several nuclei, including the olivary, cuneate, gracile, and solitary nuclei.
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
1.6K
01:19Brainstem
2.0K
The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
2.0K
01:17Other Factors Affecting Respiration Centers
845
Breathing is primarily an involuntary activity regulated by the brainstem respiratory centers. However, it can also be consciously controlled, allowing us to hold our breath or take deeper breaths when needed. This voluntary control is facilitated by the cerebral motor cortex, which bypasses the medullary centers to stimulate the respiratory muscles directly.
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical...
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical...
845