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Related Concept Videos

Vision01:24

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each other using neurotransmitters at specific junctions called synapses. Neurons come in many shapes that often relate to their function, but most share three main structures: an axon and dendrites that extend out from a cell body.
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Related Experiment Video

Updated: Oct 24, 2025

Isolation and Culture of Mouse Cortical Astrocytes
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Homeostatic Regulation of Astrocytes by Visual Experience in the Developing Primary Visual Cortex.

Liang-Liang Wang1, Dan Xu1, Yujian Luo1

  • 1Department of Neurology of the First Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University School of Medicine, Hangzhou 310027, China.

Cerebral Cortex (New York, N.Y. : 1991)
|August 16, 2021
PubMed
Summary

Astrocytes in the visual cortex adapt to sensory input. Long-term visual deprivation alters astrocyte density and connections, suggesting homeostatic plasticity in these critical brain cells.

Keywords:
astrocyteexperienceplasticitypostnatal developmentprimary visual cortex

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Sensory experience is crucial for shaping brain circuits during development.
  • Astrocytes, once considered passive support cells, are increasingly recognized for their active role in neural circuit organization.
  • The response of astrocytes to sensory experience during postnatal development remains largely unexplored.

Purpose of the Study:

  • To investigate the maturation and plasticity of astrocytes in the primary visual cortex (V1) during postnatal development.
  • To determine how different types of visual experience affect astrocyte anatomy and physiology.
  • To elucidate the role of astrocytes in experience-dependent cortical circuit refinement.

Main Methods:

  • Profiling astrocyte maturation across different postnatal stages in V1.
  • Inducing visual experience manipulations (monocular and binocular deprivation) during the critical period.
  • Analyzing anatomical changes (astrocyte density) and physiological coupling (gap junctions) in V1 astrocytes.

Main Results:

  • Binocular deprivation had a more pronounced effect on reactive astrocytes in V1 than monocular deprivation.
  • Long-term binocular deprivation led to a reduction in reactive astrocyte density in V1 layer 2/3.
  • Simultaneously, long-term binocular deprivation strengthened gap junction coupling between astrocytes.

Conclusions:

  • Cortical astrocytes exhibit homeostatic plasticity in response to prolonged sensory input alterations.
  • Astrocyte plasticity may collaborate with neuronal plasticity to refine cortical circuits during postnatal development.
  • These findings highlight astrocytes as key players in experience-dependent brain development.