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Neuroplasticity

Neuroplasticity

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.

Plasticity

Plasticity

Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...

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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
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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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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

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Related Experiment Video

Updated: Jun 22, 2026

A Neonatal Mouse Spinal Cord Compression Injury Model

A Neonatal Mouse Spinal Cord Compression Injury Model

Published on: March 27, 2016

Plasticity in the developing brain: implications for rehabilitation.

Michael V Johnston¹

¹Departments of Neurology, Pediatrics and Physical Medicine and Rehabilitation, Kennedy Krieger Institute and Johns Hopkins University School of Medicine, 707 North Broadway, Baltimore, MD 21205, USA. Johnston@kennedykrieger.org

Developmental Disabilities Research Reviews

|June 3, 2009

Summary

This summary is machine-generated.

Neuronal plasticity enables the brain to learn, adapt, and recover from injury. Understanding its mechanisms, like synaptic plasticity, is key to developing better therapies for neurological disorders.

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Unilateral Pyramidotomy of the Corticospinal Tract in Rats for Assessment of Neuroplasticity-inducing Therapies

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Published on: December 15, 2014

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Last Updated: Jun 22, 2026

A Neonatal Mouse Spinal Cord Compression Injury Model

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Published on: March 27, 2016

Unilateral Pyramidotomy of the Corticospinal Tract in Rats for Assessment of Neuroplasticity-inducing Therapies

Unilateral Pyramidotomy of the Corticospinal Tract in Rats for Assessment of Neuroplasticity-inducing Therapies

Published on: December 15, 2014

Area of Science:

Neuroscience
Neurobiology
Cognitive Science

Background:

Neuronal plasticity is the brain's ability to adapt and reorganize.
It's crucial for learning, memory, and recovery from injury.
While often beneficial, it can also contribute to neurological disorders.

Purpose of the Study:

To explore the fundamental mechanisms of neuronal plasticity.
To highlight its role in both adaptive and maladaptive processes.
To discuss clinical applications and future therapeutic potential.

Main Methods:

Review of neurogenesis, programmed cell death, and synaptic plasticity.
Analysis of activity-dependent changes like long-term potentiation/depression.
Examination of structural and functional brain changes using imaging techniques (MRI, PET, TMS).

Main Results:

Synaptic plasticity involves physical changes in neurons and circuits.
Enhanced plasticity in development involves synapse overproduction and pruning.
Clinical examples demonstrate adaptive plasticity in response to training and therapy.

Conclusions:

Neuronal plasticity is a complex process with significant implications for brain function and recovery.
Understanding plasticity mechanisms informs the development of novel therapies for brain injuries and disorders.
Brain stimulation techniques show promise for enhancing plasticity and functional recovery.