Figure 2. Emission properties of TFs in brain slices.
a, Schematic of light delivery in brain tissue through FFs and TFs.
b, left, Image of fluorescence induced by light emission from an FF implanted into cortex in a fluorescein impregnated brain slice. Gray scale represents fluorescence intensity in arbitrary units of a linear scale. right, Normalized fluorescence intensity profile in the tissue starting from the fiber end face
c and d, Bright field images (left) to identify the position of the TFs in the fluorescein impregnated cortical or striatal brain slice used for acquisition of the fluorescence images (middle). Gray scale is the same as in (b). right, Normalized profiles of fluorescence intensities beside the taper, starting from the first emission point.
