Table 8.

Comparison between fitting test spectra with subject-specific models and the general Colin 27 model. Ranges of errors (%) in the fitted OPs correspond to 68% confidence intervals. Spectra of detectors 1 to 6 were used.

Fitting model	${\mu }_{a,\text{scalp}}$	${\mu }_{s,\text{scalp}}^{\prime }$	${\mu }_{a,\text{skull}}$	${\mu }_{s,\text{skull}}^{\prime }$	${\mu }_{a,\mathrm{GM}}$	${\mu }_{s,\mathrm{GM}}^{\prime }$
Each subject’s own model	−15∼17	−7∼7	−19∼42	−15∼12	−28∼21	−27∼78
Colin 27	−32∼92	−34∼13	−1∼162	−42∼70	−44∼57	−73∼42