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Related Concept Videos

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.
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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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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 Depression01:05

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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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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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Integration of Synaptic Events01:28

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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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Related Experiment Video

Updated: Nov 4, 2025

3D Modeling of Dendritic Spines with Synaptic Plasticity
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Synaptic modifications in learning and memory - A dendritic spine story.

Shaorong Ma1, Yi Zuo1

  • 1Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.

Seminars in Cell & Developmental Biology
|May 22, 2021
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Summary

Recent imaging techniques allow scientists to observe how synapses change, which is key to understanding learning and memory. These studies explore synaptic modifications crucial for cognitive functions.

Keywords:
Dendritic spineLTDLTPLearningMemorySynapse

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biophysics

Background:

  • Synapses are critical neuronal junctions for communication.
  • Synaptic plasticity, or activity-dependent modification, underlies learning and memory.
  • Understanding synaptic changes is fundamental to neuroscience.

Purpose of the Study:

  • To review recent advancements in imaging technologies for studying synaptic modification.
  • To highlight how these technologies illuminate the mechanisms of learning and memory.
  • To focus on imaging studies investigating synaptic changes related to memory formation.

Main Methods:

  • Utilizing high-resolution time-lapse imaging.
  • Employing fluorescent biosensors and actuators.
  • Monitoring and manipulating synaptic structure and function in vitro and in vivo.

Main Results:

  • Recent imaging studies provide unprecedented insights into synaptic plasticity.
  • These studies demonstrate the dynamic nature of synaptic modifications during learning.
  • Advanced imaging reveals specific structural and functional changes at the synapse.

Conclusions:

  • High-resolution imaging is revolutionizing the study of synaptic modification.
  • Understanding these modifications is essential for deciphering the neural basis of learning and memory.
  • Future research will continue to leverage imaging to explore cognitive processes.