High-speed volumetric imaging of neuronal activity in freely moving rodents.

Skocek, Oliver; Nöbauer, Tobias; Weilguny, Lukas; Martínez Traub, Francisca; Xia, Chuying Naomi; Molodtsov, Maxim I; Grama, Abhinav; Yamagata, Masahito et al. · Nat Methods · 2018

basic_science · Level V

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Abstract

Thus far, optical recording of neuronal activity in freely behaving animals has been limited to a thin axial range. We present a head-mounted miniaturized light-field microscope (MiniLFM) capable of capturing neuronal network activity within a volume of 700 × 600 × 360 µm<sup>3</sup> at 16 Hz in the hippocampus of freely moving mice. We demonstrate that neurons separated by as little as ~15 µm and at depths up to 360 µm can be discriminated.

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