Dynamic illumination of spatially restricted or large brain volumes via a single tapered optical fiber.

Dynamic illumination of spatially restricted or large brain volumes via a single tapered optical fiber.
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DOI:
10.1038/nn.4591
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发表时间:
2017-08
影响因子:
25
通讯作者:
Sabatini BL
Sabatini BL
中科院分区:
医学1区
文献类型:
--
作者:
Pisanello F;Mandelbaum G;Pisanello M;Oldenburg IA;Sileo L;Markowitz JE;Peterson RE;Della Patria A;Haynes TM;Emara MS;Spagnolo B;Datta SR;De Vittorio M;Sabatini BL

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Optogenetics promises spatiotemporal precise control of neural processes using light. However, the spatial extent of illumination within the brain is difficult to control and cannot be adjusted using standard fiber optics. We demonstrate that optical fibers with tapered tips can be used to illuminate either spatially restricted or large brain volumes. Remotely adjusting the light input angle to the fiber varies the light-emitting portion of the taper over several millimeters without movement of the implant. We use this mode to activate dorsal versus ventral striatum of individual mice and reveal different effects of each manipulation on motor behavior. Conversely, injecting light over the full numerical aperture of the fiber results in light emission from the entire taper surface, achieving broader and more efficient optogenetic activation of neurons when compared to the standard flat-faced fiber stimulation. Thus, tapered fibers permit focal or broad illumination that can be precisely and dynamically matched to experimental needs.
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