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Related Experiment Videos

Eyelid movements in normal human fetuses.

Boris M Petrikovsky1, Gary Kaplan, Nancy Holsten

  • 1Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Nassau University Medical Center, Third Floor, Women's Pavilion, 2201 Hempstead Turnpike, East Meadow, New York 11554, USA.

Journal of Clinical Ultrasound : JCU
|June 18, 2003
PubMed
Summary

Fetal blinking is a normal activity observed in 89% of healthy fetuses. Vibroacoustic stimulation increased fetal blinking, suggesting it is part of the startle reflex.

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Area of Science:

  • Fetal development
  • Neuroscience
  • Obstetrics

Background:

  • Blinking is a fundamental protective reflex in humans.
  • Understanding fetal reflexes provides insights into neurological development.

Purpose of the Study:

  • To characterize fetal blinking activity.
  • To assess the impact of vibroacoustic stimulation on fetal blinking.

Main Methods:

  • Sonographic observation of blinking in 18 healthy fetuses (33-42 weeks).
  • Analysis of videotaped eye movements in slow motion.
  • Application of fetal vibroacoustic stimulation when clinically indicated.

Main Results:

  • Fetal blinking detected in 89% of fetuses.

Related Experiment Videos

  • Mean blinking frequency: 6.2 movements/hour.
  • Vibroacoustic stimulation increased blinking to 15.3 movements/hour in stimulated fetuses.

    • Conclusions:

    • Blinking is a normal activity in healthy fetuses.
    • Increased blinking with vibroacoustic stimulation suggests a startle reflex response.