Table 2.
Summary of material properties used in the head model.
| Tissue | Material constants | Density (kg/m3) | Poisson’s ratio |
|---|---|---|---|
| Brain | µ1 = 53.8 Pa, α1 = 10.1, µ2 = −120.4 Pa, α2 = −12.9 | 1040.0 | ~0.5 |
| CSF | K = 2.1 GPa | 1000.0 | 0.5 |
| Scalp connective tissue | µ1 = 1.30 × 104 Pa, α1 = 24.2 | 1133.0 | ~0.5 |
| Scalp adipose tissue | µ1 = 3.99 × 103 Pa, α1 = 8.8 | 1133.0 | ~0.5 |
| Dura mater,falx, tentorium | Hyperviscoelastic | 1133.0 | 0.499 |
| Pia mater | Hyperviscoelastic | 1133.0 | 0.499 |
| Skull | Age-dependent linear elastic* | 2000.0 | 0.22 |
| Suture | Age-dependent linear elastic* | 1500.0 | 0.22 |
*See Supplementary Methods for details.