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Spatial attention in children with perinatal stroke.

Timothy Adamos1, Leanne Chukoskie1, Jeanne Townsend1

  • 1Department of Neurosciences, University of California San Diego Health Sciences, La Jolla CA USA.

Behavioural Brain Research
|October 4, 2021
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Summary

Children with early brain damage, particularly left hemisphere stroke, show significant spatial attention deficits. These findings highlight distinct neural networks for attention development versus maintenance in young individuals.

Keywords:
Perinatal strokePosner taskSpatial attentionSpatial discriminationSpatial neglect

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Pediatric Neurology

Background:

  • Spatial neglect is common after adult right hemisphere damage.
  • Less is understood about spatial inattention following early brain damage in children.

Purpose of the Study:

  • To investigate hemispatial neglect and attention in children with perinatal stroke (left hemisphere (LH) or right hemisphere (RH)).
  • To compare attentional performance between children with LH lesions, RH lesions, and controls.

Main Methods:

  • Utilized a Posner-based cueing task (E-task) to assess attention orienting, disengagement, and reorienting.
  • Administered a visual perception task to measure visual processing speed.
  • Included children with perinatal LH or RH lesions and typically developing controls.

Main Results:

  • Children with LH lesions exhibited slowed visual perception.
  • Both LH and RH lesion groups showed reduced accuracy on the E-task compared to controls.
  • LH lesions led to broader attentional deficits (orienting, disengagement) on both sides; RH lesions primarily impaired contralesional attention.

Conclusions:

  • Children with LH lesions displayed more extensive attentional deficits than those with RH lesions.
  • Suggests that developing spatial attention may rely on different neural networks than attention maintenance.