Figure 7.

Engineering stress-stretch data for samples of brain tissue harvested from the frontal lobe in the sagittal direction compared with the theoretical predictions. The material parameter values used to obtain the theoretical predictions from Equation (19) are summarized in Table 3, while the values of c = −0.8263 J/m³, m₁ = 0.095, r₁ = 1.001, r₂ = 0.8 and γ = 0.1 were used in Equation (26). The experimental data were adapted from [23].