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Brain birth and personal identity.

D G Jones1

  • 1University of Otago, Dunedin, New Zealand.

Journal of Medical Ethics
|December 1, 1989
PubMed
Summary
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The concept of "brain birth" is debated for human embryo research ethics. This study suggests brain birth occurs at 24-28 weeks gestation but questions the concept

Area of Science:

  • Neuroscience
  • Embryology
  • Bioethics

Background:

  • The concept of 'brain birth' is significant in determining the ethical status of human embryos.
  • Previous literature places brain birth between 12 days and 20 weeks gestation.
  • The symmetry between brain birth and brain death is often emphasized.

Purpose of the Study:

  • To review existing discussions on brain birth.
  • To outline major brain development features and electroencephalogram (EEG) characteristics in premature infants.
  • To critically evaluate the validity of the brain birth concept.

Main Methods:

  • Review of existing literature on brain birth and brain death.
  • Analysis of key developmental milestones in human brain development.
Keywords:
Analytical ApproachGenetics and ReproductionPhilosophical Approach

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  • Examination of EEG patterns in premature infants.

    • Main Results:

    • If the concept of brain birth is valid, it should be situated between 24-28 weeks gestation.
    • Significant differences exist between the developmental processes of brain birth and the degenerative processes of brain death.
    • The gradual nature of brain development contrasts with the more defined endpoint of brain death.

    Conclusions:

    • The concept of brain birth, as currently understood, is questionable due to the asymmetry between development and death.
    • The timing of brain birth, if considered valid, is likely around 24-28 weeks gestation.
    • Further research is needed to refine or replace the concept of brain birth in ethical and scientific discourse.