Table 3. Estimated relative NIRS sensitivity (proportions) as a function of depth for a SD separation of 30 mm.
Shell Depth Range (mm) | ||||||||||
Location | N | Scalp | Skull | 0–2.8 | 2.8–5.6 | 5.6–8.4 | 8.4–11.2 | 11.2–14 | 14–16.8 | 16.8–19.6 |
Fp1 | 45 | 0.16 | 0.70 | 0.059 | 0.046 | 0.0202 | 0.0078 | 0.00272 | 0.00079 | 0.00020 |
(0.03) | (0.02) | (0.009) | (0.007) | (0.0032) | (0.0013) | (0.00051) | (0.00017) | (0.00006) | ||
Fp2 | 47 | 0.21 | 0.64 | 0.064 | 0.047 | 0.0190 | 0.0069 | 0.00241 | 0.00073 | 0.00019 |
(0.04) | (0.03) | (0.011) | (0.008) | (0.0039) | (0.0016) | (0.00062) | (0.00022) | (0.00008) | ||
Fz | 66 | 0.26 | 0.52 | 0.047 | 0.046 | 0.0406 | 0.0302 | 0.02048 | 0.01339 | 0.00762 |
(0.02) | (0.02) | (0.004) | (0.004) | (0.0032) | (0.0033) | (0.00307) | (0.00255) | (0.00187) | ||
F3 | 78 | 0.15 | 0.64 | 0.084 | 0.071 | 0.0341 | 0.0145 | 0.00591 | 0.00217 | 0.00071 |
(0.01) | (0.01) | (0.010) | (0.007) | (0.0030) | (0.0016) | (0.00080) | (0.00035) | (0.00013) | ||
F4 | 91 | 0.17 | 0.64 | 0.085 | 0.066 | 0.0273 | 0.0097 | 0.00341 | 0.00111 | 0.00032 |
(0.01) | (0.01) | (0.008) | (0.006) | (0.0024) | (0.0010) | (0.00046) | (0.00019) | (0.00007) | ||
F7 | 76 | 0.65 | 0.21 | 0.055 | 0.046 | 0.0218 | 0.0088 | 0.00318 | 0.00111 | 0.00040 |
(0.06) | (0.03) | (0.012) | (0.009) | (0.0041) | (0.0016) | (0.00062) | (0.00025) | (0.00012) | ||
F8 | 71 | 0.69 | 0.20 | 0.041 | 0.036 | 0.0185 | 0.0077 | 0.00291 | 0.00114 | 0.00048 |
(0.05) | (0.03) | (0.008) | (0.007) | (0.0033) | (0.0015) | (0.00065) | (0.00029) | (0.00015) | ||
C3 | 90 | 0.34 | 0.41 | 0.068 | 0.069 | 0.0520 | 0.0297 | 0.01501 | 0.00713 | 0.00325 |
(0.02) | (0.01) | (0.005) | (0.005) | (0.0044) | (0.0029) | (0.00169) | (0.00087) | (0.00043) | ||
C4 | 83 | 0.36 | 0.46 | 0.052 | 0.053 | 0.0389 | 0.0220 | 0.01047 | 0.00467 | 0.00201 |
(0.02) | (0.01) | (0.005) | (0.005) | (0.0037) | (0.0023) | (0.00126) | (0.00064) | (0.00031) | ||
Cz | 43 | 0.41 | 0.30 | 0.031 | 0.034 | 0.0350 | 0.0358 | 0.03275 | 0.02818 | 0.02398 |
(0.02) | (0.02) | (0.002) | (0.002) | (0.0016) | (0.0014) | (0.00168) | (0.00159) | (0.00132) | ||
P3 | 66 | 0.26 | 0.52 | 0.087 | 0.073 | 0.0359 | 0.0146 | 0.00566 | 0.00210 | 0.00070 |
(0.02) | (0.01) | (0.009) | (0.007) | (0.0044) | (0.0023) | (0.00107) | (0.00047) | (0.00019) | ||
P4 | 65 | 0.25 | 0.49 | 0.095 | 0.081 | 0.0452 | 0.0209 | 0.00901 | 0.00346 | 0.00118 |
(0.02) | (0.01) | (0.007) | (0.005) | (0.0038) | (0.0024) | (0.00129) | (0.00061) | (0.00025) | ||
Pz | 38 | 0.48 | 0.34 | 0.037 | 0.037 | 0.0337 | 0.0253 | 0.01693 | 0.01081 | 0.00683 |
(0.06) | (0.03) | (0.007) | (0.007) | (0.0064) | (0.0051) | (0.00369) | (0.00245) | (0.00159) | ||
O1 | 34 | 0.17 | 0.56 | 0.132 | 0.093 | 0.0333 | 0.0103 | 0.00303 | 0.00084 | 0.00021 |
(0.01) | (0.01) | (0.007) | (0.005) | (0.0027) | (0.0011) | (0.00039) | (0.00013) | (0.00004) | ||
O2 | 43 | 0.19 | 0.51 | 0.133 | 0.096 | 0.0400 | 0.0147 | 0.00528 | 0.00192 | 0.00065 |
(0.01) | (0.02) | (0.009) | (0.005) | (0.0032) | (0.0020) | (0.00111) | (0.00056) | (0.00024) | ||
T3 | 80 | 0.68 | 0.12 | 0.083 | 0.066 | 0.0304 | 0.0112 | 0.00387 | 0.00127 | 0.00038 |
(0.02) | (0.01) | (0.008) | (0.006) | (0.0029) | (0.0011) | (0.00043) | (0.00016) | (0.00006) | ||
T4 | 66 | 0.70 | 0.13 | 0.076 | 0.057 | 0.0264 | 0.0103 | 0.00371 | 0.00123 | 0.00037 |
(0.03) | (0.01) | (0.009) | (0.006) | (0.0030) | (0.0012) | (0.00046) | (0.00016) | (0.00006) | ||
T5 | 62 | 0.35 | 0.49 | 0.078 | 0.052 | 0.0169 | 0.0048 | 0.00134 | 0.00035 | 0.00006 |
(0.03) | (0.02) | (0.012) | (0.008) | (0.0030) | (0.0010) | (0.00034) | (0.00013) | (0.00004) | ||
T6 | 63 | 0.40 | 0.47 | 0.074 | 0.043 | 0.0131 | 0.0036 | 0.00094 | 0.00021 | 0.00002 |
(0.05) | (0.03) | (0.011) | (0.007) | (0.0025) | (0.0008) | (0.00024) | (0.00007) | (0.00002) |