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Long-term Potentiation01:25

Long-term Potentiation

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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.
Hebbian LTP
LTP can occur when...
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Long-term Potentiation01:35

Long-term Potentiation

58.9K
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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Neuroplasticity01:01

Neuroplasticity

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Long-term Depression01:03

Long-term Depression

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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.
Calcium Ion Concentration Mechanism
If over...
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Long-term Depression01:05

Long-term Depression

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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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Integration of Synaptic Events01:28

Integration of Synaptic Events

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Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
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Video Experimental Relacionado

Updated: Feb 22, 2026

3D Modeling of Dendritic Spines with Synaptic Plasticity
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3D Modeling of Dendritic Spines with Synaptic Plasticity

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Plasticidad sináptica a escala de tiempo conductual: propiedades, elementos y funciones

Jeffrey C Magee1,2

  • 1Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, USA. jcmagee@bcm.edu.

Nature neuroscience
|February 20, 2026
PubMed
Resumen
Este resumen es generado por máquina.

La plasticidad sináptica a escala de tiempo conductual (BTSP) es un nuevo mecanismo cerebral que permite la formación rápida de recuerdos y el aprendizaje. Esta plasticidad en el hipocampo permite el almacenamiento eficiente de la memoria y la generalización de las experiencias.

Palabras clave:
plasticidad sinápticaescala de tiempo conductualaprendizajememoriahipocampopotencial de meseta dendríticaplasticidad dependiente de la espigaasignación de créditoneurocienciaciencia cognitiva

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Área de la Ciencia:

  • Neurociencia
  • Ciencia Cognitiva

Sus antecedentes:

  • Comprender el aprendizaje y la memoria del cerebro es un desafío científico clave.
  • La plasticidad sináptica a escala de tiempo conductual (BTSP) está implicada en el aprendizaje y la memoria basados en la experiencia.
  • La BTSP es una plasticidad fuerte y bidireccional que afecta los pesos sinápticos a lo largo de segundos.

Objetivo del estudio:

  • Explorar el papel de la BTSP en el aprendizaje y la memoria.
  • Elucidar los mecanismos subyacentes a la BTSP, incluida la iniciación del potencial de meseta.
  • Investigar el potencial de la BTSP para el almacenamiento, recuperación y generalización de la memoria.

Principales métodos:

  • Estudios que implican la BTSP en la función del hipocampo.
  • Análisis de la inducción del potencial de meseta por eventos dendríticos únicos.
  • Investigación de mecanismos de control que incluyen la inhibición de retroalimentación local y la entrada del cerebro de orden superior.

Principales resultados:

  • La BTSP se induce por potenciales de meseta dendrítica únicos, a diferencia de los mecanismos de plasticidad tradicionales.
  • La iniciación del potencial de meseta implica inhibición de retroalimentación local y entrada instructiva de orden superior.
  • La BTSP ofrece una asignación de crédito no estándar para la memoria, lo que podría reducir las necesidades de estabilización sináptica.

Conclusiones:

  • La BTSP proporciona un nuevo mecanismo para formar recuerdos de episodios específicos y generalizar a partir de experiencias pasadas.
  • Esta plasticidad puede permitir que las redes del hipocampo almacenen y recuperen información de manera eficiente.
  • La investigación adicional sobre BTSP puede tender puentes entre los niveles de sistemas, cognitivo y molecular de la investigación del aprendizaje y la memoria.