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Related Concept Videos

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 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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Neural Circuits01:25

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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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Related Experiment Video

Updated: Jun 14, 2025

Inducing Long-Term Plasticity of Intrinsic Neuronal Excitability in Neurons of the Dorsal Lateral Geniculate Nucleus
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Neuronal enhancers fine-tune adaptive circuit plasticity.

Eric C Griffith1, Anne E West2, Michael E Greenberg1

  • 1Department of Neurobiology, Harvard Medical School, Boston, MA, USA.

Neuron
|August 29, 2024
PubMed
Summary

Transcriptional enhancers fine-tune brain plasticity by regulating gene expression. Their dynamic activation and enduring changes offer insights into neural circuit sculpting and cognitive dysfunction mechanisms.

Keywords:
circuit plasticityenhancergene regulationmetaplasticityneuronal activitytranscriptional memory

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Neuronal activity-regulated gene expression is vital for adaptive brain function.
  • Transcriptional enhancers are key regulators of precise gene transcription patterns.

Purpose of the Study:

  • To explore the role of enhancer dynamics in activity-dependent cellular plasticity.
  • To investigate how enhancer specificity and modularity can be used for genetic access to cell states.
  • To understand the contribution of enduring enhancer state changes to metaplasticity.

Main Methods:

  • Analysis of transcriptional enhancer function in neuronal plasticity.
  • Exploiting enhancer specificity for targeted gene manipulation.
  • Investigating stimulus-induced changes in enhancer states.

Main Results:

  • Enhancer dynamics enable fine-tuning of activity-dependent cellular plasticity.
  • Enhancer specificity and modularity allow selective genetic access to cell states.
  • Enduring enhancer changes contribute to cell-wide metaplasticity.

Conclusions:

  • Activity-dependent enhancer function is crucial for understanding brain plasticity.
  • Targeted enhancer manipulation provides a method for evaluating gene function.
  • Further exploration of enhancers is needed to uncover mechanisms of cognitive dysfunction.