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Abnormal motor behaviour in anencephalic fetuses.

G H Visser, R N Laurini, J I de Vries

    Early Human Development
    |November 1, 1985
    PubMed
    Summary
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    Anencephalic fetuses exhibit abnormal fetal movement patterns, characterized by jerky, large-amplitude movements, even early in pregnancy. These qualitative changes occur despite severe central nervous system defects.

    Area of Science:

    • Neuroscience
    • Developmental Biology
    • Fetal Medicine

    Background:

    • Anencephaly is a severe congenital disorder characterized by the absence of a major portion of the brain, skull, and scalp.
    • Fetal movement patterns are crucial indicators of neurological development and well-being.

    Purpose of the Study:

    • To investigate and characterize the movement patterns in anencephalic fetuses.
    • To correlate ultrasound observations of fetal movements with postmortem morphological findings.

    Main Methods:

    • Ultrasound observations of movement patterns in eight anencephalic fetuses.
    • Correlation of observed movements with postmortem morphological examination.

    Main Results:

    • Anencephalic fetuses displayed qualitatively abnormal movements: forceful, jerky, and large-amplitude.

    Related Experiment Videos

  • Movement patterns varied significantly, with some showing burst-pause patterns instead of scattered activity.
  • Isolated arm movements were observed even in fetuses lacking a cervical cord.
  • Fetal lung hypoplasia was noted as early as 16 weeks, associated with hiccups and breathing movements.

    • Conclusions:

    • Abnormal fetal movement patterns are evident early in pregnancy in cases of severe central nervous system defects.
    • The primary abnormality lies in the quality of fetal movements.
    • Fetal movements can persist despite significant alterations in the central nervous system's structure and organization.