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Related Experiment Video

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A method for assessing nonlinear growth in the fetal cortex.

Rosita Shishegar, Joanne M Britto, Leigh A Johnston

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 9, 2015
    PubMed
    Summary

    Researchers developed a new method to study brain folding during development. This technique identifies regions of differing growth, aiding understanding of brain development and disorders.

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    Area of Science:

    • Neuroscience
    • Developmental Biology
    • Medical Imaging

    Background:

    • Cortical folding into gyri and sulci is a hallmark of higher mammal brains.
    • Understanding cortical folding is crucial for insights into normal brain development and neurodevelopmental disorders.

    Purpose of the Study:

    • To propose and validate a novel method for localizing nonlinearities in cortical folding.
    • To identify regions of differential growth during brain development.

    Main Methods:

    • Utilized spherical harmonic (SPHARM) representation of the cortical surface.
    • Assessed linearity by comparing reconstructed SPHARM surfaces with linearly combined SPHARM coefficients from adjacent time points.
    • Applied the method to MRI data of fetal sheep brains during key developmental stages.

    Main Results:

    • Developed an interpretable quantification of cortical folding development.
    • The method demonstrated low computational cost.
    • Successfully applied to experimental data, revealing patterns of differential growth during early cortical folding.

    Conclusions:

    • The proposed SPHARM-based method effectively localizes nonlinearities in cortical folding.
    • This approach provides a valuable tool for studying brain development and identifying potential origins of neurodevelopmental disorders.