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    Biorheology. 1997 Nov-Dec;34(6):377-85.

    Linear viscoelastic properties of bovine brain tissue in shear.

    Source

    Department of Mechanical and Mechatronic Engineering, University of Sydney, New South Wales, Australia. bilston@mech.eng.usyd.edu.au

    Abstract

    We report the results from a series of rheological tests of fresh bovine brain tissue. Using a standard Bohlin VOR shear rheometer, shear relaxation and oscillating strain sweep experiments were performed on disks of brain tissue 30 mm in diameter, with a thickness of 1.5-2 mm. The strain sweep experiment showed that the viscoelastic strain limit is of the order of 0.1% strain. Shear relaxation data do not indicate the presence of a long-term elastic modulus, indicating fluid-like behavior. A relaxation spectrum was calculated by inverting the experimental data and used to predict oscillatory response, which agreed well with measured data.

    PMID:
    9640354
    [PubMed - indexed for MEDLINE]

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