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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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Plasticity00:58

Plasticity

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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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Related Experiment Video

Updated: Dec 25, 2025

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches
10:34

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches

Published on: October 18, 2024

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Swimming exercise enhances brain plasticity in fish.

Daan Mes1, Arjan P Palstra2, Christiaan V Henkel3

  • 1Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, Oslo, Norway.

Royal Society Open Science
|March 29, 2020
PubMed
Summary

Sustained swimming exercise enhances brain plasticity and neurogenesis in juvenile Atlantic salmon. This study reveals exercise-induced increases in cognition-related neuronal markers, supporting fish brain health.

Keywords:
Atlantic salmonbdnfdorsolateral palliumhippocampusneurogenesispcna

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Area of Science:

  • Neuroscience
  • Fish Biology
  • Exercise Physiology

Background:

  • Mammalian studies confirm exercise enhances brain plasticity and cognition.
  • This phenomenon is understudied in fish species.
  • Understanding exercise effects on fish brains is crucial for aquaculture and conservation.

Purpose of the Study:

  • To investigate if sustained swimming exercise improves brain plasticity in juvenile Atlantic salmon.
  • To identify molecular markers associated with exercise-induced brain changes in fish.

Main Methods:

  • Whole telencephalon transcriptome mapping in exercise-trained vs. control salmon.
  • Telencephalic region-specific microdissections for target gene analysis.
  • Gene ontology (GO) analysis to identify enriched functional categories.

Main Results:

  • 1772 transcripts showed differential expression between groups.
  • GO analysis revealed enrichment in neuronal excitability, signaling, proliferation, and neurite outgrowth.
  • Increased expression of proliferating cell nuclear antigen (PCNA), synaptotagmin (SYT), and brain-derived neurotrophic factor (BDNF) in specific brain regions.

Conclusions:

  • This study provides the first direct evidence linking swimming exercise to enhanced neurogenesis and neural plasticity in the teleost telencephalon.
  • Exercise significantly impacts molecular pathways related to cognition in fish.
  • Findings open avenues for future research on exercise-induced neuroplasticity in fish.