Fig. 3

NIR laser-induced heating of brain tissue. a \(\Delta T\) versus laser power time of non-homogenized brain stem (red), cerebrum (gray), and cerebellum (blue) at a laser power, \(P=1\) W. The 806-nm laser irradiation (ON) and without (OFF). The vertical black punctuated line signifies the instance where the laser is turned off. b Steady-state temperature \(\Delta T_\text {ss}\) versus laser power P of non-homogenized brain stem (red circles), cerebrum (gray squares), and cerebellum (blue diamonds). The data are averaged (\(N=5\)) from different animals (except for cerebellum at 0.75 W, for brain stem at 0.5 W and at 0.75 W where \(N=4\)). The error bars denote one weighted standard deviations of the fitted values (Eqs. (1) and (2)) of \(\Delta T_\text {ss}\)