Transfer functions linking neural calcium to single voxel functional ultrasound signal

Ali Kemal Aydin, William D. Haselden, Yannick Goulam Houssen, Christophe Pouzat, Ravi L. Rungta, Charlie Demené, Mickael Tanter, Patrick J. Drew, Serge Charpak, Davide Boido

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Functional ultrasound imaging (fUS) is an emerging technique that detects changes of cerebral blood volume triggered by brain activation. Here, we investigate the extent to which fUS faithfully reports local neuronal activation by combining fUS and two-photon microscopy (2PM) in a co-registered single voxel brain volume. Using a machine-learning approach, we compute and validate transfer functions between dendritic calcium signals of specific neurons and vascular signals measured at both microscopic (2PM) and mesoscopic (fUS) levels. We find that transfer functions are robust across a wide range of stimulation paradigms and animals, and reveal a second vascular component of neurovascular coupling upon very strong stimulation. We propose that transfer functions can be considered as reliable quantitative reporters to follow neurovascular coupling dynamics.

Original languageEnglish (US)
Article number2954
JournalNature communications
Volume11
Issue number1
DOIs
StatePublished - Dec 1 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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