Cited by 303Functional Brain Connectivity StudiesAdvanced MRI Techniques and ApplicationsOptical Imaging and Spectroscopy Techniques

Entrainment of Arteriole Vasomotor Fluctuations by Neural Activity Is a Basis of Blood-Oxygenation-Level-Dependent “Resting-State” Connectivity

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Mateo, Celine, Knutsen, Per M., Tsai, Philbert S., Shih, Andy Y., Kleinfeld, David·2017·Neuron

Abstract

Resting-state signals in blood-oxygenation-level-dependent (BOLD) imaging are used to parcellate brain regions and define "functional connections" between regions. Yet a physiological link between fluctuations in blood oxygenation with those in neuronal signaling pathways is missing. We present evidence from studies on mouse cortex that modulation of vasomotion, i.e., intrinsic ultra-slow (0.1 Hz) fluctuations in arteriole diameter, provides this link. First, ultra-slow fluctuations in neuronal signaling, which occur as an envelope over γ-band activity, entrains vasomotion. Second, optogenetic manipulations confirm that entrainment is unidirectional. Third, co-fluctuations in the diameter of pairs of arterioles within the same hemisphere diminish to chance for separations >1.4 mm. Yet the diameters of arterioles in distant (>5 mm), mirrored transhemispheric sites strongly co-fluctuate; these correlations are diminished in acallosal mice. Fourth, fluctuations in arteriole diameter coherently drive fluctuations in blood oxygenation. Thus, entrainment of vasomotion links neuronal pathways to functional connections.

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  • The mean delays (around 1.5 s) found were somewhat shorter than the ones found in the above study (about 1.9-2 s)29, with significant inter-episodes variability.

    “Although the mean delays (around 1.5 s) we found were somewhat shorter than the ones found in the above study (about 1.9–2 s)29, we found significant inter-episodes variability, which might explain this discrepancy, apart from the notable experimental set-up differences (species, head-fixed vs. head-free) and arousal state (sleep vs. wakefulness).”

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Authors
Mateo, C., Knutsen, P. M., Tsai, P. S., Shih, A. Y., & Kleinfeld, D.
Affiliations
  • University of California San Diego (US)
  • Medical University of South Carolina (US)
Corresponding author
Kleinfeld, David
Venue
Neuron
Publisher
Elsevier BV
Published
2017-11
Volume
96
Issue
4
Pages
936-948.e3
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2766937272
Cited by
303
References
87
Citations by year
2026: 24 · 2025: 37 · 2024: 37 · 2023: 30 · 2022: 37 · 2021: 39 · 2020: 37 · 2019: 31 · 2018: 27 · 2017: 4
FWCI
15.53
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • United States National Institute of Mental Health (MH108503, MH111438)
  • United States National Institute of Neurological Disease and Stroke (NS082097, NS097265)
  • United States National Institute of Biomedical Imaging and Bioengineering (EB003832)
  • United States National Institute of General Medical Sciences (GM12345)
  • United States National Science Foundation (PHY-153264, OIA-1539034)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Optical Imaging and Spectroscopy Techniques
Keywords
neural entrainment, resting-state functional connectivity, BOLD signal, blood oxygenation, gamma oscillations, optogenetic manipulation, cerebral cortex, functional connectivity
MeSH terms
Animals, Arterioles, Cerebral Cortex, Corpus Callosum, Magnetic Resonance Imaging, Male, Mice, Transgenic, Neural Pathways, Oxygen, Rest, Vasodilation, Mice, Neuroimaging, Gamma Rhythm

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