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Neuroplasticity01:01

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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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The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
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Updated: Dec 29, 2025

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Asymmetrical Brain Plasticity: Physiology and Pathology.

M Esteves1, E Ganz1, N Sousa1

  • 1Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal; Clinical Academic Center - Braga, Braga, Portugal.

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Brain laterality, the brain

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • The brain exhibits inherent structural and functional asymmetry.
  • Language processing is known to be asymmetrical, with links to memory and emotion.
  • Brain laterality is increasingly understood as plastic and adaptive.

Purpose of the Study:

  • To review and critically assess current literature on brain laterality.
  • To emphasize the role of environmental factors and training in asymmetrical plasticity.
  • To explore compensatory mechanisms in aging and following lesions.

Main Methods:

  • Review of contemporary imaging studies.
  • Analysis of morphological and functional laterality research.
  • Examination of plasticity in response to learning, training, and aging.

Main Results:

  • Laterality is plastic and adaptive, influenced by learning and training.
  • Increased task complexity recruits contralateral regions, indicating functional reserve.
  • Reduced asymmetry correlates with successful aging and compensatory mechanisms after lesions.

Conclusions:

  • Brain laterality is a dynamic, adaptable feature.
  • Environmental factors and training significantly influence brain asymmetry.
  • Loss of asymmetry can be a compensatory mechanism for cognitive function.