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Related Experiment Videos

The initial development of the human brain.

R O'Rahilly, E Gardner

    Acta Anatomica
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Early human brain development begins with the neural groove at stage 8. Major brain subdivisions form as neural fold enlargements, not vesicles, with the telencephalon medium appearing early.

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    Area of Science:

    • Developmental biology
    • Neuroscience
    • Embryology

    Background:

    • The early human brain's development is crucial for understanding neurological formation.
    • Existing data from the Carnegie Collection and published literature provide insights into early embryonic stages.

    Purpose of the Study:

    • To detail the precise timeline and morphological characteristics of early human brain development.
    • To clarify the origins of major brain subdivisions and associated structures.

    Main Methods:

    • Analysis of Carnegie Collection data and published embryological information.
    • Detailed observation and description of embryonic stages (7-12) focusing on neural development.

    Main Results:

    • The neural groove is the first visible sign of the nervous system at stage 8.

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  • Major brain subdivisions originate as enlargements of neural folds at stage 9, not as vesicles.
  • The telencephalon medium appears early, prior to the formation of cerebral vesicles.

    • Conclusions:

    • The study refines the understanding of early human brain formation, emphasizing the role of neural fold development.
    • Clarifies the relationships between neuromeres, otic region, somites, and neural crest.
    • Discusses terminological implications for brain subdivision nomenclature.