On the sensitivity of the vibrational response of the human head (Q1271712)

We perform a parametric study based on finite element analysis in order to investigate the sensitivity of the eigenfrequency spectrum of the human head system upon variation of its constitutive material properties. The present work aims to resolve the question of whether or not a spectrum shifting is detectable with current experimental procedures. The human head is modeled as a prolate spheriod consisting of confocal shell representing the scalp-skull system, in contact with the subarachnoidal space which surrounds the brain. The skull is modeled as an isotropic elastic material whereas the brain is assumed to be a frequency dependent viscoelastic body.