Masamichi Ohkura

Masamichi Ohkura

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Masamichi Ohkura

Masamichi Ohkura

Publications by authors named "Masamichi Ohkura"

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43Publications

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Wide and Deep Imaging of Neuronal Activities by a Wearable NeuroImager Reveals Premotor Activity in the Whole Motor Cortex.

Sci Rep 2019 Jun 10;9(1):8366. Epub 2019 Jun 10.

Laboratory for Neural Circuit Dynamics of Decision Making, RIKEN Center for Brain Science, Wako, Saitama, 351-0198, Japan.

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http://dx.doi.org/10.1038/s41598-019-44146-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6557893PMC
June 2019

Confocal and multiphoton calcium imaging of the enteric nervous system in anesthetized mice.

Neurosci Res 2019 Feb 18. Epub 2019 Feb 18.

Graduate School of Science and Engineering, Saitama University, Saitama, 338-8570, Japan; Brain and Body System Science Institute, Saitama University, Saitama, 338-8570, Japan; RIKEN Center for Brain Science, Wako, Saitama, 351-0198, Japan; RIKEN Center for Advanced Intelligence Project, Tokyo, 103-0072, Japan. Electronic address:

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http://dx.doi.org/10.1016/j.neures.2019.02.004DOI Listing
February 2019

Super-wide-field two-photon imaging with a micro-optical device moving in post-objective space.

Nat Commun 2018 09 3;9(1):3550. Epub 2018 Sep 3.

Department of Physiology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.

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http://dx.doi.org/10.1038/s41467-018-06058-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6120955PMC
September 2018

Role of tyramine in calcium dynamics of GABAergic neurons and escape behavior in .

Zoological Lett 2018 26;4:19. Epub 2018 Jul 26.

1Brain and Body System Science Institute, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama, 338-8570 Japan.

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http://dx.doi.org/10.1186/s40851-018-0103-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6062986PMC
July 2018

A Critical Neurodevelopmental Role for L-Type Voltage-Gated Calcium Channels in Neurite Extension and Radial Migration.

J Neurosci 2018 06 17;38(24):5551-5566. Epub 2018 May 17.

Department of Neurochemistry, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan,

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http://dx.doi.org/10.1523/JNEUROSCI.2357-17.2018DOI Listing
June 2018

Two-photon calcium imaging of the medial prefrontal cortex and hippocampus without cortical invasion.

Elife 2017 09 25;6. Epub 2017 Sep 25.

Department of Physiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.

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http://dx.doi.org/10.7554/eLife.26839DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643091PMC
September 2017

Fast varifocal two-photon microendoscope for imaging neuronal activity in the deep brain.

Biomed Opt Express 2017 Sep 10;8(9):4049-4060. Epub 2017 Aug 10.

Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan.

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http://dx.doi.org/10.1364/BOE.8.004049DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5611922PMC
September 2017

A new platform for long-term tracking and recording of neural activity and simultaneous optogenetic control in freely behaving Caenorhabditis elegans.

J Neurosci Methods 2017 Jul 12;286:56-68. Epub 2017 May 12.

Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan; Brain and Body System Science Institute, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan. Electronic address:

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http://dx.doi.org/10.1016/j.jneumeth.2017.05.017DOI Listing
July 2017

The integrative role of orexin/hypocretin neurons in nociceptive perception and analgesic regulation.

Sci Rep 2016 07 7;6:29480. Epub 2016 Jul 7.

Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya, 464-8601 Japan.

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http://dx.doi.org/10.1038/srep29480DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4935841PMC
July 2016

Generation and Imaging of Transgenic Mice that Express G-CaMP7 under a Tetracycline Response Element.

PLoS One 2015 6;10(5):e0125354. Epub 2015 May 6.

RIKEN Brain Science Institute, Wako, Saitama, Japan; Brain Science Institute, Saitama University, Saitama, Japan.

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0125354PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4422725PMC
April 2016

A Top-Down Cortical Circuit for Accurate Sensory Perception.

Neuron 2015 Jun 21;86(5):1304-16. Epub 2015 May 21.

Laboratory for Behavioral Neurophysiology, Brain Science Institute, RIKEN, 2-1 Hirosawa, Wako City, Saitama, 351-0198, Japan. Electronic address:

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http://dx.doi.org/10.1016/j.neuron.2015.05.006DOI Listing
June 2015

Comparison of genetically encoded calcium indicators for monitoring action potentials in mammalian brain by two-photon excitation fluorescence microscopy.

Neurophotonics 2015 Apr 30;2(2):021014. Epub 2015 Apr 30.

Dalhousie University , Department of Physiology and Biophysics, Halifax, Nova Scotia B3H 4R2, Canada.

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http://dx.doi.org/10.1117/1.NPh.2.2.021014DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4478877PMC
April 2015

Water-soluble jack-knife prawn extract inhibits 5-hydroxytryptamine-induced vasoconstriction and platelet aggregation in humans.

Food Funct 2015 Feb;6(2):444-9

First Department of Pharmacology, Graduate School of Clinical Pharmacy, Kyushu University of Health and Welfare, Nobeoka, Miyazaki 882-8508, Japan.

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http://dx.doi.org/10.1039/c4fo00716fDOI Listing
February 2015

Rational design of a high-affinity, fast, red calcium indicator R-CaMP2.

Nat Methods 2015 Jan 24;12(1):64-70. Epub 2014 Nov 24.

1] Department of Neurochemistry, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. [2] Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Tokyo, Japan.

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http://dx.doi.org/10.1038/nmeth.3185DOI Listing
January 2015

Reward-timing-dependent bidirectional modulation of cortical microcircuits during optical single-neuron operant conditioning.

Nat Commun 2014 Nov 24;5:5551. Epub 2014 Nov 24.

1] Division of Brain Circuits, National Institute for Basic Biology and the Graduate University of Advanced Studies (Sokendai), Myodaiji, Okazaki, Japan [2] Japan Science and Technology Agency, CREST, Saitama 332-0012, Japan.

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http://dx.doi.org/10.1038/ncomms6551DOI Listing
November 2014

Imaging intraorganellar Ca2+ at subcellular resolution using CEPIA.

Nat Commun 2014 Jun 13;5:4153. Epub 2014 Jun 13.

Department of Pharmacology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-0033, Japan.

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http://www.nature.com/articles/ncomms5153
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http://dx.doi.org/10.1038/ncomms5153DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4082642PMC
June 2014

Large-scale imaging of subcellular calcium dynamics of cortical neurons with G-CaMP6-actin.

Neuroreport 2014 May;25(7):501-6

aGraduate School of Pharmaceutical Sciences, University of Tokyo, Tokyo bBrain Science Institute, Saitama University, Saitama cCenter for Information and Neural Networks, Osaka, Japan.

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http://dx.doi.org/10.1097/WNR.0000000000000126DOI Listing
May 2014

Principal component analysis of odor coding at the level of third-order olfactory neurons in Drosophila.

Genes Cells 2013 Dec 7;18(12):1070-81. Epub 2013 Oct 7.

Institute of Molecular and Cellular Biosciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo, 113-0032, Japan.

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http://dx.doi.org/10.1111/gtc.12094DOI Listing
December 2013

[Ca(2+) imaging of neurons and astrocytes with genetically encoded Ca(2+) indicators].

Nihon Yakurigaku Zasshi 2013 Nov;142(5):226-30

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http://dx.doi.org/10.1254/fpj.142.226DOI Listing
November 2013

[Development of the genetically encoded red fluorescent Ca(2+) indicator R-CaMP1.07].

Nihon Yakurigaku Zasshi 2013 Mar;141(3):175

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http://dx.doi.org/10.1254/fpj.141.175DOI Listing
March 2013

Real-time visualization of neuronal activity during perception.

Curr Biol 2013 Feb 31;23(4):307-11. Epub 2013 Jan 31.

Division of Molecular and Developmental Biology, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan.

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http://dx.doi.org/10.1016/j.cub.2012.12.040DOI Listing
February 2013

LIS1-dependent retrograde translocation of excitatory synapses in developing interneuron dendrites.

Nat Commun 2012 Mar 6;3:722. Epub 2012 Mar 6.

Department of Cellular Neurobiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

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http://www.nature.com/articles/ncomms1736
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http://dx.doi.org/10.1038/ncomms1736DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3316883PMC
March 2012

Derived (mutated)-types of TRPV6 channels elicit greater Ca²+ influx into the cells than ancestral-types of TRPV6: evidence from Xenopus oocytes and mammalian cell expression system.

J Pharmacol Sci 2010 8;114(3):281-91. Epub 2010 Oct 8.

Department of Molecular and Cellular Biology, Nagasaki University Graduate School of Biomedical Sciences, Japan.

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http://dx.doi.org/10.1254/jphs.10169fpDOI Listing
June 2011

Genetic visualization with an improved GCaMP calcium indicator reveals spatiotemporal activation of the spinal motor neurons in zebrafish.

Proc Natl Acad Sci U S A 2011 Mar 7;108(13):5425-30. Epub 2011 Mar 7.

Division of Molecular and Developmental Biology, National Institute of Genetics, Graduate University for Advanced Studies, SOKENDAI, Mishima, Shizuoka 411-8540, Japan.

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http://www.pnas.org/cgi/doi/10.1073/pnas.1000887108
Publisher Site
http://dx.doi.org/10.1073/pnas.1000887108DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3069178PMC
March 2011

Inhibitory effect of lomerizine, a prophylactic drug for migraines, on serotonin-induced contraction of the basilar artery.

J Pharmacol Sci 2009 Oct 26;111(2):221-5. Epub 2009 Sep 26.

Department of Pathophysiology, School of Pharmacy, Showa University, Tokyo, Japan.

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http://dx.doi.org/10.1254/jphs.09205scDOI Listing
October 2009

Rho-kinase, but not protein kinase C, is involved in generation of the spontaneous tone in the resting phase of the isolated pig iris sphincter muscle.

Curr Eye Res 2009 Mar;34(3):177-83

Department of Orthoptics and Visual Sciences, School of Health Sciences, Kyushu University of Health and Welfare, Nobeoka, Miyazaki, Japan.

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http://dx.doi.org/10.1080/02713680802652175DOI Listing
March 2009

Both 5-hydroxytryptamine 5-HT2A and 5-HT1B receptors are involved in the vasoconstrictor response to 5-HT in the human isolated internal thoracic artery.

Clin Exp Pharmacol Physiol 2008 Jul 21;35(7):836-40. Epub 2008 Apr 21.

First Department of Pharmacology, School of Pharmacological Sciences, Kyushu University of Health and Welfare, Nobeoka, Miyazaki, Japan.

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http://dx.doi.org/10.1111/j.1440-1681.2008.04933.xDOI Listing
July 2008

Local subplasma membrane Ca2+ signals detected by a tethered Ca2+ sensor.

Proc Natl Acad Sci U S A 2006 Aug 21;103(35):13232-7. Epub 2006 Aug 21.

Department of Physiology, University of Maryland School of Medicine, Baltimore, 21201, USA.

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http://dx.doi.org/10.1073/pnas.0605757103DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1559782PMC
August 2006

Genetically encoded bright Ca2+ probe applicable for dynamic Ca2+ imaging of dendritic spines.

Anal Chem 2005 Sep;77(18):5861-9

Department of Information Physiology, and Department of Cell Physiology, National Institute for Physiological Sciences, and School of Life Science, Graduate University for Advanced Studies, Okazaki, Aichi 444-8585, Japan.

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http://dx.doi.org/10.1021/ac0506837DOI Listing
September 2005

Activation of cerebellar parallel fibers monitored in transgenic mice expressing a fluorescent Ca2+ indicator protein.

Eur J Neurosci 2005 Aug;22(3):627-35

Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, 2-1 Hirosawa, Saitama 351-0198, Japan.

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http://dx.doi.org/10.1111/j.1460-9568.2005.04250.xDOI Listing
August 2005

Insulin induces internalization of the 5-HT2A receptor expressed in HEK293 cells.

Eur J Pharmacol 2005 Jul;518(1):18-21

First Department of Pharmacology, School of Pharmaceutical Sciences, Kyushu University of Health and Welfare, Yoshino, Nobeoka 882-8508, Japan.

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http://dx.doi.org/10.1016/j.ejphar.2005.06.011DOI Listing
July 2005

Probing calcium ions with biosensors.

Biotechnol Genet Eng Rev 2003 ;20:3-21

Department of Information Physiology, National Institute for Physiological Sciences, Myodaiji, Okazaki, 444-8585, Japan.

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June 2004