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Pattern visual evoked potential performance in preterm preschoolers with average intelligence quotients.

Jing-Jing Feng1, Xiu Xu, Wei-Ping Wang

  • 1Department of Child Health Care, Children's Hospital of Fudan University, Shanghai, China.

Early Human Development
|November 27, 2010
PubMed
Summary

Preterm preschoolers, even with average intelligence, show visual-spatial perception deficits. Pattern reversal visual evoked potential (PRVEP) testing can objectively identify these visual processing issues in children.

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Area of Science:

  • Neuroscience
  • Developmental Pediatrics
  • Ophthalmology

Background:

  • Preterm infants often experience visual perceptual and visual-motor impairments.
  • Visual perceptual deficits can significantly impact daily functioning.
  • Limited research connects electrophysiological visual system assessments with spatial information processing in preterm preschoolers of average intelligence.

Purpose of the Study:

  • To investigate the pattern reversal visual evoked potential (PRVEP) responses to varying spatial frequencies in preterm preschoolers.
  • To compare these PRVEP responses between preterm and normal children.

Main Methods:

  • Included 20 very low birth weight (VLBW), 41 low birth weight (LBW), and 41 normal children (ages 4-6).
  • All participants had average intelligence quotients (assessed via WPPSI) and no major disabilities.

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  • PRVEP was recorded at five spatial frequencies (108', 54', 27', 13', 7') using a neuroelectrophysiological device.

    • Main Results:

    • LBW and VLBW groups scored lower in verbal, performance, and overall intelligence compared to controls, though within the average range.
    • VLBW group showed significantly prolonged P100 latencies at all spatial frequencies; LBW group showed delays at 13' and 7' check sizes.
    • P100 amplitudes were significantly smaller in VLBW and LBW groups across all spatial frequencies, with VLBW amplitudes being the lowest.

    Conclusions:

    • Preterm preschoolers with average cognitive abilities are susceptible to visual-spatial perception deficits, particularly with complex visual information.
    • PRVEP serves as an objective and practical tool for detecting visual perception problems in children.