Výsledky vyhledávání - "Yoichi Onodera"

Hypofrontality and microvascular dysregulation in remitted late-onset depression assessed by functional near-infrared spectroscopy

Autor: Koji Matsuo, Nobumasa Kato, Yoichi Onodera, Tadafumi Kato, Taku Hamamoto, Kenro Muraki

Publikováno v: NeuroImage. 26:234-242

Accumulated evidence suggests the involvement of vascular factors in late-onset depression. Late-onset depression has characteristics of poor outcome, cognitive decline, and high prevalence rather than early-onset depression. The aim of the present s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6a378f1b6b38b8ed844d67c533b2845
https://doi.org/10.1016/j.neuroimage.2005.01.024

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Prefrontal hemodynamic response to verbal-fluency task and hyperventilation in bipolar disorder measured by multi-channel near-infrared spectroscopy

Autor: Nobumasa Kato, Yoichi Onodera, Koji Matsuo, Tadafumi Kato, Akira Watanabe

Publikováno v: Journal of Affective Disorders. 82:85-92

Background: Many neuroimaging studies of patients with bipolar disorder have demonstrated functional hypofrontality (reduced activation of the frontal cortex), although this finding is still controversial. We previously found hypoactivation of the le

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d0417e64b9cf3c05996b972c1e82089
https://doi.org/10.1016/j.jad.2003.10.004

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Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR

Autor: Yukari Tanikawa, Yukio Yamada, Kenji Tanaka, Huijuan Zhao, Angelo Sassaroli, Feng Gao, Yoichi Onodera

Publikováno v: Physics in Medicine and Biology. 47:2075-2093

The optical differential pathlength factor (DPF) is an important parameter for physiological measurement using near infrared spectroscopy, but for the human adult head it has been available only for the forehead. Here we report measured DPF results f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::339975f3c49c6c7d1804b05f61bf12a5
https://doi.org/10.1088/0031-9155/47/12/306

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Time-Resolved Measurements of in vivo Optical Properties of Piglet Brain

Autor: Angelo Sassaroli, Yukio Yamada, Kenji Tanaka, Ryuichiro Araki, Yukari Tanikawa, Yoichi Onodera, Fabrizio Martelli

Publikováno v: Optical Review. 7:420-425

The in vivo optical properties of a piglet brain were measured using a time-resolved system at three different wavelengths (759, 794, 824 nm). To separate the contribution of different head layers to the detected signals, the measurements were acquir

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50cee0fd6da3f35b32bbd0149184be32
https://doi.org/10.1007/s10043-000-0420-3

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Development of High-resolution TV Camera for Real Time Digital Radiography System

Autor: Masayuki Tsuneoka, Fumitaka Takahashi, Yokouchi Hisatake, Yoichi Onodera

Publikováno v: The Journal of the Institute of Television Engineers of Japan. 47:732-738

We have developed a 2000-line TV camera which use a 1-inch SATICON as a real-time digital radiography (DR) systemWe record a 60% amplitude response when 1000 TV lines are at the center of the image, and a 46 dB signal-to-noise ratio using the 2100 li

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0b3366f35d0b2f1eefbd0371048774d
https://doi.org/10.3169/itej1978.47.732

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Development of a Retractor for Monitoring the Oxygenation State of Brain Tissue

Autor: Kaoru Sakatani, Yoichi Onodera, Tomokatsu Hori, Yukio Yamada

Publikováno v: Advances in Experimental Medicine and Biology ISBN: 9781461349648

In the majority of neurosurgical operations, brain refraction is one of the essential techniques. When the stress of retraction becomes too high, because of the occlusion of the blood vessel, saturation of oxygen (SO2) in the retracted tissue would b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c07f5a5fe411885a743b75d0cff31674
https://doi.org/10.1007/978-1-4615-0205-0_36

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Light propagation in adult heads obtained from a time-resolved NIR optical imaging system

Autor: Angelo Sassaroli, Yukio Yamada, Huijuan Zhao, Yukari Tanikawa, Feng Gao, Kenji Tanaka, Yoichi Onodera

Publikováno v: Technical Digest. CLEO/Pacific Rim 2001. 4th Pacific Rim Conference on Lasers and Electro-Optics (Cat. No.01TH8557).

We discussed the influence of optical properties on light propagation in terms of the results of time-resolved NIR brain function experiment using adult heads. The results show that CSF (cerebrospinal fluid) does have some scattering and absorption;

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::781e8ec8970a1fe0ee1ebc01fc7a7d9d
https://doi.org/10.1109/cleopr.2001.967875

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