Fig. 8.

Quantitative comparisons across wavelengths and model size. Dots represent the average across the 1% of channels with the largest TS values. Error bars represent the standard deviation. Black lines show model results for an average-sized adult dolphin; gray shows results from a juvenile model, 25% smaller than the adult. (a) Jacobian values inside the muscle tissue. (b) Muscle TS index. (c) Power as measured by a $100{\mathrm{mm}}^2$ detector relative to an input fluence rate of $1{\mathrm{mm}}^{-2}{\mathrm{s}}^{-1}$. (d) Difference in light power between a muscle at rest and a stronger perfused muscle, simulated by increasing the hemoglobin concentration inside the muscle tissue mesh by 10%. (e) Source–detector distances for the selected 1% best channels. (f) Dynamic range, defined as $\mathrm{\Delta }P/P$, showing the required dynamic range that the detector must achieve.