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Structural changes in visual cortex area 17 in children with aftereffects of perinatal injury to the central nervous

V N Sal'kov1, R M Khudoerkov

  • 1Laboratory of Functional Morphochemistry, Institute of Brain Research, Russian Academy of Medical Sciences, Moscow. neurolab@yandex.ru

Bulletin of Experimental Biology and Medicine
|February 2, 2008
PubMed

Insights

Infants with perinatal brain injury show altered visual cortex development. Structural changes, including increased thickness and decreased neuron density, occur in the first year of life.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Pathology

Background:

  • Perinatal brain injury can impact neurodevelopment.
  • The visual cortex (area 17) is crucial for visual processing.
  • Understanding structural changes in early life is vital.

Purpose of the Study:

  • To investigate structural alterations in the visual cortex (area 17) of infants with perinatal central nervous system injury.
  • To compare these changes with a control group of healthy infants.

Main Methods:

  • Computer-assisted morphometry was used.
  • Autopsied brain specimens from infants were analyzed.
  • Comparison between infants with and without perinatal brain injury.

Main Results:

  • Children with perinatal pathology exhibited uneven increases in visual cortex thickness and specific layers (IV, V, VI+VII) during the first year of life.
  • A decrease in neuronal density was observed.
  • An increase in neuroglia content was noted.

Conclusions:

  • Perinatal brain injury leads to significant, nonspecific structural changes in the developing visual cortex.
  • These structural alterations suggest functional deficits in visual processing associated with perinatal cerebral pathology.

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