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    Optogenetics enables experimental control over neural activity using light. Channelrhodopsin and its variants are typically activated using visible light excitation but can also be activated using infrared two-photon excitation. Two-photon excitation can improve the spatial precision of stimulation in scattering tissue but has several practical limitations that need to be considered before use. Here we describe the methodology and best practices for using two-photon optogenetic stimulation of neurons within the brain of the fruit fly, Drosophila melanogaster, with an emphasis on projection neurons of the antennal lobe.


    Mehmet Fişek, James M Jeanne. Two-Photon Optogenetic Stimulation of Drosophila Neurons. Methods in molecular biology (Clifton, N.J.). 2021;2191:97-108

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    PMID: 32865741

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