Evidence map›Paper›PMID 32764808›Full record

ArticlePloS one2020

In vivo two-photon microscopic observation and ablation in deeper brain regions realized by modifications of excitation beam diameter and immersion liquid.

Kazushi Yamaguchi, Ryoji Kitamura, Ryosuke Kawakami, Kohei Otomo, Tomomi Nemoto

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.6field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Advances in Two-Photon Imaging in Plants.Plant & cell physiology · 2021
    Review
  11. Chronic cranial window for photoacoustic imaging: a mini review.Visual computing for industry, biomedicine, and art · 2021
    Review
  12. Article
  13. Review
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Kazushi YamaguchiGraduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan.
Ryoji KitamuraGraduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan.
Ryosuke KawakamiGraduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan.
Kohei OtomoGraduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan.
Tomomi NemotoGraduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan.ORCID 0000-0001-6102-1495
National Institutes of Natural Sciences · JPHokkaido University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In vivo two-photon microscopy utilizing a nonlinear optical process enables, in living mouse brains, not only the visualization of morphologies and functions of neural networks in deep regions but also their optical manipulation at targeted sites with high spatial precision. Because the two-photon excitation efficiency is proportional to the square of the photon density of the excitation laser light at the focal position, optical aberrations induced by specimens mainly limit the maximum depth of observations or that of manipulations in the microscopy. To increase the two-photon excitation efficiency, we developed a method for evaluating the focal volume in living mouse brains. With this method, we modified the beam diameter of the excitation laser light and the value of the refractive index in the immersion liquid to maximize the excitation photon density at the focal position. These two modifications allowed the successful visualization of the finer structures of hippocampal CA1 neurons, as well as the intracellular calcium dynamics in cortical layer V astrocytes, even with our conventional two-photon microscopy system. Furthermore, it enabled focal laser ablation dissection of both single apical and single basal dendrites of cortical layer V pyramidal neurons. These simple modifications would enable us to investigate the contributions of single cells or single dendrites to the functions of local cortical networks.

Indexed as

AnimalsBrainEquipment DesignFemaleMaleMiceMicroscopy, Fluorescence, MultiphotonNeuronsPhotons

Identifiers

PMID32764808
PMCPMC7413496
OpenAlexW3048100439

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.