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Neuroplasticity01:01

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Long-term Potentiation01:25

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Long-term Potentiation01:35

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Role of Neurotransmitters in Memory01:23

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Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
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Long-term Depression01:03

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Video Experimental Relacionado

Updated: Jan 7, 2026

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording
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Plasticidad mediada por astrocitos: mecanismos multiescala que vinculan la dinámica sináptica con el aprendizaje y la

Masaya Yamamoto1,2, Tetsuya Takano1,2,3

  • 1Kyushu University Institute for Advanced Study, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.

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|December 24, 2025
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Resumen

Los astrocitos influyen significativamente en el aprendizaje y la memoria al modular la función sináptica a través de la señalización de calcio y la gliotransmisión. Las nuevas técnicas de imagen revelan cómo estas células gliales interactúan con las sinapsis para formar y estabilizar las huellas de la memoria.

Palabras clave:
dinámica del calcio de los astrocitosplasticidad mediada por astrocitosaprendizaje y memoriasinapsis tripartita

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Área de la Ciencia:

  • Neurociencia
  • Biología Celular
  • Biología Glial

Sus antecedentes:

  • Los astrocitos son células gliales cruciales involucradas en la plasticidad sináptica, el aprendizaje y la memoria.
  • Los procesos astrocíticos perisinápticos interactúan con las sinapsis neuronales, ampliando la diversidad sináptica.
  • La señalización del calcio (Ca2+) astrocítico, la gliotransmisión y la traducción local impactan la eficacia sináptica y la formación de la memoria.

Objetivo del estudio:

  • Revisar los mecanismos de las interacciones astrocito-sinapsis en la regulación del cálculo del circuito.
  • Destacar las técnicas avanzadas de imagen y transcriptómica para analizar las interacciones astrocito-sinapsis in vivo.
  • Sintetizar cómo los astrocitos leen la actividad neuronal, influyen en las sinapsis y coordinan los estados de la red.

Principales métodos:

  • Técnicas de imagen in vivo de superresolución y volumétricas.
  • Transcriptómica espacial para análisis específicos de tipo celular y de compartimento.
  • Revisión de mecanismos clásicos y emergentes de la función astrocítica.

Principales resultados:

  • Los astrocitos participan activamente en la función sináptica, el aprendizaje y la consolidación de la memoria.
  • El análisis detallado de las interacciones astrocito-sinapsis ahora es posible in vivo.
  • Los dominios astrocíticos (microdominios, folletos multisinápticos) y los conjuntos de redes regulan el cálculo del circuito.

Conclusiones:

  • Los astrocitos son parte integral de la lógica multicelular de la formación y estabilización de la memoria.
  • La comprensión de los roles de los astrocitos ofrece información sobre los trastornos neurológicos y psiquiátricos.
  • Los modelos de memoria asociativa neurona-astroctio proporcionan marcos teóricos para los roles astrocíticos en la memoria.