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Related Concept Videos

Lateralization01:28

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
Cerebral Hemispheres01:05

Cerebral Hemispheres

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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Etiology-specific differences in motor function after hemispherectomy.

Nicolien M van der Kolk1, Kim Boshuisen, Ron van Empelen

  • 1Department of Neurology, Radboud University Nijmegen Medical Center, PO Box 9101, 6500HB Nijmegen, The Netherlands. N.vanderkolk@neuro.umcn.nl

Epilepsy Research
|September 15, 2012
PubMed
Summary
This summary is machine-generated.

Predicting motor outcomes after hemispherectomy is challenging. Etiology and preoperative MRI scans can help predict functional motor recovery in children, especially regarding hand function and gross motor skills.

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Area of Science:

  • Pediatric Neurology
  • Neurosurgery
  • Rehabilitation Medicine

Background:

  • Predicting functional motor outcomes after hemispherectomy presents challenges due to varied results.
  • Hypothesized link between plasticity during disorder onset and heterogeneous motor outcomes.
  • Need to identify reliable predictors for motor function post-hemispherectomy.

Purpose of the Study:

  • To identify predictors of functional motor outcome following hemispherectomy.
  • To investigate the influence of etiological factors on motor recovery.
  • To correlate preoperative MRI findings with postoperative motor function.

Main Methods:

  • Study included 35 children undergoing functional hemispherectomy with diverse etiologies (developmental, acquired, progressive).
  • Motor function was assessed preoperatively and 24 months postoperatively.
  • Preoperative MRI scans were analyzed for insular cortex integrity and corticospinal tract status.

Main Results:

  • Children with developmental etiologies showed better preoperative distal arm strength and hand function, but not gross motor skills.
  • Postoperatively, all groups had poor muscle strength and hand function; gross motor function improved in acquired and progressive etiology groups.
  • Loss of hand function and distal arm strength correlated with etiology, intact insular cortex, and ipsilesional corticospinal tract integrity on preoperative MRI.

Conclusions:

  • Postoperative motor function after hemispherectomy is more accurately predicted by etiology and preoperative MRI findings.
  • Children with developmental etiologies are more prone to losing distal arm strength and hand function.
  • Developmental etiology is associated with less gross motor function improvement compared to acquired pathologies.