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Functional Brain Systems: Reticular Formation01:13

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The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
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Socioemotional Development during Infancy01:30

Socioemotional Development during Infancy

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Socio-emotional development in infancy is primarily shaped by early emotional responses and social connections, with temperament playing a central role. Temperament refers to the consistent patterns in an individual's emotional and behavioral responses, observable even in infancy. By examining temperament, researchers can better understand an infant's unique ways of interacting with the world, influencing subsequent personality and socio-emotional growth.
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Functional Divisions of the Nervous System01:23

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The nervous system, responsible for sensing, integrating, and responding to various stimuli, is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The PNS has two functional divisions: the sensory or afferent division and the motor or efferent division.
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The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
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Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
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Video Experimental Relacionado

Updated: Feb 24, 2026

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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Comunalidad y variabilidad en redes funcionales en niños menores de 5 años

Jiaxin Cindy Tu, Chenyan Lu, Trevor K M Day

    bioRxiv : the preprint server for biology
    |February 23, 2026
    PubMed
    Resumen

    Las redes cerebrales individualizadas, incluidas las áreas del lenguaje, emergen en niños pequeños antes de los cinco años. Esta arquitectura cerebral funcional temprana es estable y está vinculada al desarrollo cognitivo, ofreciendo información sobre el desarrollo típico.

    Palabras clave:
    redes cerebralesdesarrollo infantilneuroimagenconectividad funcionaldesarrollo cognitivo

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    Área de la Ciencia:

    • Neurociencia
    • Neurociencia del Desarrollo
    • Neurociencia Cognitiva

    Sus antecedentes:

    • La cognición humana depende de las redes cerebrales funcionales, pero su trayectoria de desarrollo temprana y las diferencias individuales no se comprenden bien.
    • Los métodos tradicionales que promedian datos de participantes pueden enmascarar la organización específica de la edad y la variabilidad individual cruciales, especialmente en las regiones cerebrales en desarrollo.

    Objetivo del estudio:

    • Desarrollar una referencia funcional apropiada para la edad para estimar redes cerebrales individualizadas en niños pequeños a partir de datos de fMRI en estado de reposo.
    • Investigar la emergencia y estabilidad de la arquitectura de redes cerebrales funcionales individualizadas en la primera infancia.
    • Explorar la relación entre la organización de la red cerebral temprana y las habilidades cognitivas.

    Principales métodos:

    • Se desarrolló una referencia funcional novedosa y apropiada para la edad para capturar la estructura común en niños pequeños preservando la variabilidad individual.
    • Se utilizaron datos de imágenes de resonancia magnética funcional (fMRI) en estado de reposo de cohortes de niños de 8 a 60 meses de edad.
    • Se analizó la topografía de la red, la estabilidad longitudinal, la conectividad dentro de la red y la lateralización del lenguaje en relación con la capacidad verbal.

    Principales resultados:

    • Se identificaron redes cerebrales funcionales individualizadas, incluidas subdivisiones más finas y lateralización emergente del lenguaje, en niños de hasta 8 meses de edad, mucho antes de los cinco años.
    • La organización de la red demostró estabilidad longitudinal, observándose una mayor consistencia en las regiones sensoriales en comparación con las cortezas de asociación.
    • La conectividad dentro de la red más fuerte, cuando se define por la topografía individualizada, explicó la varianza relacionada con la edad y vinculó las redes de lenguaje lateralizadas a la izquierda con la capacidad verbal normalizada por edad.

    Conclusiones:

    • Las redes cerebrales funcionales relevantes para el comportamiento emergen mucho antes en el desarrollo de lo que se reconocía previamente.
    • El análisis de redes individualizadas proporciona un enfoque más sensible para estudiar el desarrollo temprano del cerebro y su vínculo con la cognición.
    • Estos hallazgos establecen una base para investigar el neurodesarrollo temprano típico y identificar posibles biomarcadores tempranos.