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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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Factors Affecting Renal Clearance: Renal Impairment01:17

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Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
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Hepatic impairment, characterized by decreased liver function, does not uniformly mandate adjustments in drug dosage. Whether dosage modifications are necessary depends on various factors related to the drug's metabolism and elimination pathways. If a drug is primarily excreted via the kidneys and bypasses significant hepatic processing, if it undergoes minimal metabolic transformation in the liver, or if it is volatile and primarily expelled through the lungs, dose adjustments may not be...
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Visual System01:26

Visual System

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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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Visual Agnosia01:12

Visual Agnosia

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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
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Photoreceptors and Visual Pathways01:22

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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Updated: Jan 30, 2026

Simulating Pancreatic Neuroplasticity: In Vitro Dual-neuron Plasticity Assay
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Neuroplasticity in visual impairments.

Paulo Ramiler Silva1, Tiago Farias1, Fernando Cascio1

  • 1Neuro-innovation Technology & Brain Mapping Laboratory, Federal University of Piauí, Parnaíba.

Neurology International
|January 29, 2019
PubMed
Summary
This summary is machine-generated.

Visual impairment activates neuroplasticity, enabling the brain to reorganize. This review explores how cortical changes and compensatory sensory effects occur in individuals with vision loss.

Keywords:
Neuroplasticitycentral nervous systemvisionvisual impairments

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Neurobiology

Background:

  • Visual acuity loss can trigger significant brain adaptations.
  • Neuroplasticity, or the brain's ability to reorganize, is a key mechanism.
  • Understanding these changes is crucial for visual impairment research.

Purpose of the Study:

  • To review evidence on neuroplasticity in visual impairments.
  • To explore cortical anatomical and functional changes.
  • To understand the compensatory sensory effects of vision loss.

Main Methods:

  • Systematic review of the PUBMED database.
  • No date or publication status restrictions were applied.
  • Analysis of studies on neuroplasticity and visual impairment.

Main Results:

  • Visual impairment leads to cortical reorganization.
  • Evidence supports neuroplasticity mechanisms in overcoming visual limitations.
  • Non-visual brain areas show cross-modal and multimodal plasticity.

Conclusions:

  • Visual impairment induces compensatory sensory effects.
  • Neuroplasticity plays a vital role in adapting to vision loss.
  • Both congenital and late-onset blindness involve distinct neuroplastic changes.