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Similarity in Neuronal Firing Regimes across Mammalian Species
Mochizuki, Yasuhiro,Onaga, Tomokatsu,Shimazaki, Hideaki,Shimokawa, Takeaki,Tsubo, Yasuhiro,Kimura, Rie,Saiki, Akiko,Sakai, Yutaka,Isomura, Yoshikazu,Fujisawa, Shigeyoshi,Shibata, Ken-ichi,Hirai, Daich Society for Neuroscience 2016 The Journal of neuroscience Vol.36 No.21
<P>The architectonic subdivisions of the brain are believed to be functional modules, each processing parts of global functions. Previously, we showed that neurons in different regions operate in different firing regimes in monkeys. It is possible that firing regimes reflect differences in underlying information processing, and consequently the firing regimes in homologous regions across animal species might be similar. We analyzed neuronal spike trains recorded from behaving mice, rats, cats, and monkeys. The firing regularity differed systematically, with differences across regions in one species being greater than the differences in similar areas across species. Neuronal firing was consistently most regular in motor areas, nearly random in visual and prefrontal/medial prefrontal cortical areas, and bursting in the hippocampus in all animals examined. This suggests that firing regularity (or irregularity) plays a key role in neural computation in each functional subdivision, depending on the types of information being carried.</P>
INVERSE PROBLEM FOR INTERIOR SPECTRAL DATA OF THE DIRAC OPERATOR
Mochizuki, Kiyoshi,Trooshin, Igor Korean Mathematical Society 2001 대한수학회논문집 Vol.16 No.3
In this paper the inverse problems for the Dirac Operator are studied. A set of values of eigenfunctions in some internal point and spectrum are taken as a data. Uniqueness theorems are obtained. The approach that was used in the investigation of inverse problems for interior spectral data of the Sturm-Liouville operator is employed.
FAR-INFRARED [C II] EMISSION FROM THE CENTRAL REGIONS OF SPIRAL GALAXIES
MOCHIZUKI KENJI The Korean Astronomical Society 2004 Journal of The Korean Astronomical Society Vol.37 No.4
Anomalies in the far-infrared [C II] 158 ${\mu}m$ line emission observed in the central one-kiloparsec regions of spiral galaxies are reviewed. Low far-infrared intensity ratios of the [C II] line to the continuum were observed in the center of the Milky Way, because the heating ratio of the gas to the dust is reduced by the soft interstellar radiation field due to late-type stars in the Galactic bulge. In contrast, such low line-to-continuum ratios were not obtained in the center of the nearby spiral M31, in spite of its bright bulge. A comparison with numerical simulations showed that a typical column density of the neutral interstellar medium between illuminating sources at $hv {\~} 1 eV $ is $N_H {\le}10^{21}\;cm^{-2}$ in the region; the medium is translucent for photons sufficiently energetic to heat the grains but not sufficiently energetic to heat the gas. This interpretation is consistent with the combination of the extremely high [C Il]/CO J = 1-0 line intensity ratios and the low recent star-forming activity in the region; the neutral interstellar medium is not sufficiently opaque to protect the species even against the moderately intense incident UV radiation. The above results were unexpected from classical views of the [C II] emission, which was generally considered to trace intense interstellar UV radiation enhanced by active star formation.
A Fast Response Smectic LCD using Induced Polarization
Mochizuki, Akihiro The Korean Infomation Display Society 2005 Journal of information display Vol.6 No.3
In this paper, a general performance of the PSS-LCD or Polarization Shielded Smectic Liquid Crystal Display is discussed. This smectic base LCD does not use any spontaneous polarization, but uses induced polarization just sa me with current nematic base LCDs. Specific initial molecular alignment as well as specific cell design realizes ext remely fast optical response speed with native wide viewing angle. Moreover, this performance is provided by full compatible electronics for current conventional LCDs. A general performance of the PSS-LCD is introduced herein.
Hiroshi Mochizuki,Sei Takahashi,Hideo Nakamura,Satoshi Nishida,Ryo Ishikawa 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
In this paper, we propose a new modulation method combining code-division multiple access (CDMA) and quadrature amplitude modulation (QAM), called CDMAQAM. It transmits QAM symbols allocated based on a CDMA signal, and it has the benefit that QAM errors can be recovered if they are in a range where they can be absorbed by CDMA demodulation. We applied the method to railway signaling and developed a CDMA-QAM rail transmission system having a transmission speed of 1500 bps using digital signal processors. We also conducted a field experiment using an actual rail and verified that the system can achieve favorable constellation characteristics.
( Mariko Mochizuki ),( Yukari Osada ),( Nami Shimaoka ),( Mayumi Ito ),( Naomi Sannda ),( Junko Fujita ),( Hiroyuki Matumoto ),( Tadashi Matushita ) 대한임상병리사협회 2015 임상미생물검사학회 발표자료집 Vol.2015 No.-
Case The patient was a 45-year-old man. He was diagnosed as having malignant melanoma ten years ago, and received chemotherapy including alkylating agents. After nine years, he developed treatment-related myelodysplastic syndrome / myeloproliferative neoplasm (MDS / MPN), and he received hematopoietic stem cell transplantation. He had recurrence as MDS and re-transplanted. The blood culture after re-transplantation were repeatedly positive for Enterococci and yeast-like fungi of black-colored colony. Micafungin (MCFG) and Fluconazole were added to the treatment with liposomal-amphoterisin B. Hematopoetic stem cell transplantation was performed again due to bone marrow graft failure, however, his condition got worsened and died. Microbiological findings A yeast-like form with budding was found under microscopy, and black-colored colonies were grown on a CHROMagarTM Candida plate (Becton Dickinson). Species identification was not possible using VITEK and ApiC AUX (bioMerieux). Further culture revealed brown filamentous form on the melted chocolate-like colonies, which was strongly suggestive of dimorphic fungi. This fungus was identified as Exophiala dermatitidis by sequence analysis of ITS region of rRNA gene. Susceptibility test using the ASTY (KYOKUTO PHARMACEUTICAL INDUSTRIAL Co., Ltd) showed that, after 72hr growth, a high MIC values of > =16㎍/ml in MCFG and relatively good susceptibility to other antifungal drugs. Discussion Exophiala dermatitidis is a type of pathogenic dematiaceous fungi which was widely found in residential environment. It mainly causes infections of cutaneous and subcutaneous tissue in immunocompromised patients, but sometimes fatal infections such as bloodstream infection. In clinical settings, it is important to speculate this species from morphological features, which will lead to the early diagnosis and treatment especially in immunocompromised cases. Acknowledge Takashi Yaguchi, Aki Hirabayashi, Daizo Kato, Mitsutaka Iguchi, Satoshi Morioka, Tetsuya Yagi