Schematic (IMAGE)

RIKEN

Schematic

Caption

Near-infrared (NIR) light applied above the skull can easily pass through brain tissue with minimal scattering and reach deep structures. Up-conversion nanoparticles (UCNPs; blue) in the tissue can absorb this light and locally emit visible light sufficient to activate light-sensitive channels expressed in nearby neurons.

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RIKEN

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credit RIKEN

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