Table 1. Material properties of tissues in the head model.

Tissue	Young’s modulus E (Pa)	Poisson’s ratio ν	Density ρ (kg/m3)	Yield stress σy (Pa)	Tangent modulus Et (Pa)
(a) Elastic and elasto-plastic bodies
Skin	1.67 × 107	0.420	1300	–	–
Falx cerebri	3.15 × 107	0.450	1130	–	–
Dura mater	3.15 × 107	0.450	1130	–	–
Tentorium cerebelli	3.15 × 107	0.450	1130	–	–
Skull	8.75 × 109	0.261	1456	4.18 × 107	4.62 × 109

Tissue	Bulk modulus K (Pa)	Short-term shear modulus G0 (Pa)	Long-term shear modulus G∞ (Pa)	Density ρ (kg/m3)	Decay factor β [s-1]
(b) Viscoelastic bodies
Brain	2.19 × 109	1.25 × 104	2.5 × 103	1040	80
Soft tissue	2.19 × 109	1.25 × 104	2.5 × 103	1040	80
Eyes	2.19 × 109	1.25 × 104	2.5 × 103	1040	80
CSF	2.19 × 109	5.0 × 102	–	1040	5.0 × 105
Ventricle	2.19 × 109	5.0 × 102	–	1040	5.0 × 105