Compressed Hadamard microscopy for high-speed optically sectioned neuronal activity recordings

Vicente J. Parot, Carlos Sing-Long, Yoav Adam, Urs L. Böhm, Linlin Z. Fan, Samouil L. Farhi, Adam E. Cohen

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Structured illumination microscopies achieve optical sectioning via differential modulation of in-focus and out-of-focus contributions to an image. Multiple wide-field camera images are analyzed to recreate an optical section. The requirement for multiple camera frames per image entails a loss of temporal resolution compared to conventional wide-field imaging. Here we describe a computational structured illumination imaging scheme, compressed Hadamard imaging, which achieves simultaneously high spatial and temporal resolution for optical sectioning of 3D samples with low-rank dynamics (e.g. neurons labeled with fluorescent activity reporters). We validate the technique with numerical simulations, and then illustrate with wide-area optically sectioned recordings of membrane voltage dynamics in mouse neurons in an acute brain slice and of calcium dynamics in zebrafish brain in vivo.

Original languageAmerican English
Article number144001
JournalJournal Physics D: Applied Physics
Volume52
Issue number14
DOIs
StatePublished - 4 Feb 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 IOP Publishing Ltd.

Keywords

  • microscopy
  • neuronal activity recording
  • optical sectioning

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