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  • Ectopic expression of a mec...
    Cadoni, Sara; Demené, Charlie; Alcala, Ignacio; Provansal, Matthieu; Nguyen, Diep; Nelidova, Dasha; Labernède, Guillaume; Lubetzki, Jules; Goulet, Ruben; Burban, Emma; Dégardin, Julie; Simonutti, Manuel; Gauvain, Gregory; Arcizet, Fabrice; Marre, Olivier; Dalkara, Deniz; Roska, Botond; Sahel, José Alain; Tanter, Mickael; Picaud, Serge

    Nature nanotechnology, 06/2023, Volume: 18, Issue: 6
    Journal Article

    Remote and precisely controlled activation of the brain is a fundamental challenge in the development of brain-machine interfaces for neurological treatments. Low-frequency ultrasound stimulation can be used to modulate neuronal activity deep in the brain, especially after expressing ultrasound-sensitive proteins. But so far, no study has described an ultrasound-mediated activation strategy whose spatiotemporal resolution and acoustic intensity are compatible with the mandatory needs of brain-machine interfaces, particularly for visual restoration. Here we combined the expression of large-conductance mechanosensitive ion channels with uncustomary high-frequency ultrasonic stimulation to activate retinal or cortical neurons over millisecond durations at a spatiotemporal resolution and acoustic energy deposit compatible with vision restoration. The in vivo sonogenetic activation of the visual cortex generated a behaviour associated with light perception. Our findings demonstrate that sonogenetics can deliver millisecond pattern presentations via an approach less invasive than current brain-machine interfaces for visual restoration.