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Changes in effective diffusivity for oxygen during neural activation and deactivation estimated from capillary diameter measured by two-photon laser microscope

Overview of attention for article published in The Journal of Physiological Sciences, June 2016
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Title
Changes in effective diffusivity for oxygen during neural activation and deactivation estimated from capillary diameter measured by two-photon laser microscope
Published in
The Journal of Physiological Sciences, June 2016
DOI 10.1007/s12576-016-0466-z
Pubmed ID
Authors

Hiroshi Ito, Hiroyuki Takuwa, Yosuke Tajima, Hiroshi Kawaguchi, Takuya Urushihata, Junko Taniguchi, Yoko Ikoma, Chie Seki, Masanobu Ibaraki, Kazuto Masamoto, Iwao Kanno

Abstract

The relation between cerebral blood flow (CBF) and cerebral oxygen extraction fraction (OEF) can be expressed using the effective diffusivity for oxygen in the capillary bed (D) as OEF = 1 - exp(-D/CBF). The D value is proportional to the microvessel blood volume. In this study, changes in D during neural activation and deactivation were estimated from changes in capillary and arteriole diameter measured by two-photon microscopy in awake mice. Capillary and arteriole vessel diameter in the somatosensory cortex and cerebellum were measured under neural activation (sensory stimulation) and neural deactivation [crossed cerebellar diaschisis (CCD)], respectively. Percentage changes in D during sensory stimulation and CCD were 10.3 ± 7.3 and -17.5 ± 5.3 % for capillary diameter of <6 μm, respectively. These values were closest to the percentage changes in D calculated from previously reported human positron emission tomography data. This may indicate that thinner capillaries might play the greatest role in oxygen transport from blood to brain tissue.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 12 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 2 17%
United States 1 8%
Unknown 9 75%

Demographic breakdown

Readers by professional status Count As %
Researcher 3 25%
Other 1 8%
Professor 1 8%
Student > Doctoral Student 1 8%
Student > Ph. D. Student 1 8%
Other 1 8%
Unknown 4 33%
Readers by discipline Count As %
Medicine and Dentistry 2 17%
Engineering 2 17%
Neuroscience 2 17%
Sports and Recreations 1 8%
Agricultural and Biological Sciences 1 8%
Other 0 0%
Unknown 4 33%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 28 June 2016.
All research outputs
#21,476,880
of 23,975,976 outputs
Outputs from The Journal of Physiological Sciences
#267
of 321 outputs
Outputs of similar age
#313,451
of 357,435 outputs
Outputs of similar age from The Journal of Physiological Sciences
#11
of 11 outputs
Altmetric has tracked 23,975,976 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 321 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.3. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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We're also able to compare this research output to 11 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.