Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Kyuichi Niizeki"'
Autor:
Seiichi Morokuma, Toshinari Hayashi, Masatomo Kanegae, Yoshihiko Mizukami, Shinji Asano, Ichiro Kimura, Yuji Tateizumi, Hitoshi Ueno, Subaru Ikeda, Kyuichi Niizeki
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract Deep learning methods have gained significant attention in sleep science. This study aimed to assess the performance of a deep learning-based sleep stage classification model constructed using fewer physiological parameters derived from card
Externí odkaz:
https://doaj.org/article/1f5a643f6e8045aca78741d4d50bb7f4
Autor:
Ahsan H. Khandoker, Maisam Wahbah, Chihiro Yoshida, Yoshiyuki Kasahara, Kiyoe Funamoto, Kyuichi Niizeki, Yoshitaka Kimura
Publikováno v:
Biology Open, Vol 11, Iss 4 (2022)
This study examines the role of autonomic control of maternal and fetal heart rate variability (MHRV and FHRV) and their heartbeats phase coupling prevalence (CPheartbeat) in mice. The subjects are divided into three groups: control with saline, chol
Externí odkaz:
https://doaj.org/article/bcc334e4f3914fc1870aca8372a278c0
Autor:
Kyuichi Niizeki, Tadashi Saitoh
Publikováno v:
Frontiers in Physiology, Vol 9 (2018)
Phase coupling of respiratory sinus arrhythmia (RSA) has been proposed to be an alternative measure for evaluating autonomic nervous system (ANS) activity. The aim of this study was to analyze how phase coupling of RSA is altered during sleep, in ord
Externí odkaz:
https://doaj.org/article/c95258c6f33a40d3b9ead11188c96da2
Autor:
Kyuichi Niizeki, Tadashi Saitoh
Publikováno v:
Journal of Physical Fitness and Sports Medicine, Vol 3, Iss 1, Pp 11-20 (2014)
Biological rhythms can be entrained by internal oscillatory processes and often become synchronized with each other. For integrated physiological systems, there is evidence to show that coupling can exist between cardiorespiratory and locomotor syste
Externí odkaz:
https://doaj.org/article/a462766b15674fae8f3a9d3c74af5ae8
Publikováno v:
Sensors, Vol 13, Iss 6, Pp 7902-7915 (2013)
A multi-spectral diffuse reflectance imaging method based on a single snap shot of Red-Green-Blue images acquired with the exposure time of 65 ms (15 fps) was investigated for estimating melanin concentration, blood concentration, and oxygen saturati
Externí odkaz:
https://doaj.org/article/6f22a10f1e74489c907d28967cd91435
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 2, Iss 3, Pp 138-148 (2007)
A slider-crank mechanism whose coupler curve is the approximate ellipse is designed so that a man may perform the pedaling of the elliptical motion of the foot. Because the thigh, the shank and the foot constitute the three-link chain, the system of
Externí odkaz:
https://doaj.org/article/a24382bdeb664fc3af4511301014b448
Autor:
Manabu Sato, Satoko Kawauchi, Yoshihisa Aizu, Shunichi Sato, Izumi Nishidate, Kyuichi Niizeki
Publikováno v:
Nippon Laser Igakkaishi. 40:359-368
Autor:
Izumi Nishidate, Yuta Aoki, Daniel McDuff, Kyuichi Niizeki, Hideaki Haneishi, Chihiro Tanabe, Yoshihisa Aizu, Kazuya Nakano
Publikováno v:
Scientific Reports
Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
Peripheral hemodynamics, measured via the blood volume pulse and vasomotion, provide a valuable way of monitoring physiological state. Camera imaging-based systems can be used to measure these peripheral signals without contact with the body, at dist
Autor:
Kyuichi Niizeki, Yoshiyuki Kasahara, Kana Nakanishi, Miyabi Fukase, Ahsan H. Khandoker, Yoshitaka Kimura, Keiichi Kanda, Kiyoe Funamoto, Chihiro Yoshida
Publikováno v:
EMBC
The aim of this preliminary study is to look how maternal-fetal heart rates and their coupling patterns are influenced by injection of β blocker(propranolol) into pregnant mice. Total of 6 pregnant female mice were divided into two groups [control (
Autor:
Ahsan Khandoker, Chihiro Yoshida, Yoshiyuki Kasahara, Kiyoe Funamoto, Kyuichi Niizeki, Yoshitaka Kimura
Publikováno v:
2019 Computing in Cardiology Conference (CinC).