著者

上原 皓

出版者

筑波大学 (University of Tsukuba)

巻号頁・発行日

2020

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2019

著者

上原 皓 河本 浩明 今井 壽正 白井 誠 曾根 政富 野田 幸子 佐藤 栄人 服部 信孝 山海 嘉之

出版者

公益社団法人 日本生体医工学会

雑誌

生体医工学 (ISSN:1347443X)

巻号頁・発行日

vol.57, no.6, pp.206-214, 2019-12-10 (Released:2020-02-29)

参考文献数

34

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Gait festination (GF) is one of the representative locomotion disturbances associated with Parkinsonism, which induces pulsion caused by increased stepping velocity. Fear of falling over and involuntary symptoms caused by GF can have a significant impact on quality of life. Considering previous interventional strategies for GF and their utility in daily life, physical intervention using a wearable system to assist postural disorder and the hastening phenomenon is necessary for patients with GF. The purpose of this study was to develop a wearable system that can assist the patient in extending the trunk and generating internal rhythm. Another objective was to confirm the effectiveness of the system for preventing GF by conducting a gait experiment in a Parkinsonism patient. To design an assistive method, we simulated lateral swing in the standing position based on features of Parkinsonism, and defined the mechanism and power configurations for the system. A power unit at the back of the waist transmits a cyclic force to the chest by a link in the frontal plane. A gait experiment was performed in a Parkinsonism patient with GF to confirm that reduction of the gait cycle is prevented by using the system. The result showed that the linear trendline slope of reduction of the gait cycle decreased. In addition, the maximum stooping angle decreased by half, and the cyclic assistance of the system and gait cycle were harmonized. These results suggest that the system developed is effective in preventing GF by supporting posture and generating internal rhythm.

著者

石川 優 牟田 将史 田丸 順基 中田 英輔 上原 皓 星野 准一

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.19, no.2, pp.227-236, 2014-06-30 (Released:2017-02-01)

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In this paper, we propose the method for creating multi-view movable fogscreen, and then implement it in our system called "HANASUI". "HANASUI" displays handheld-like fireworks through a fog screen instead of sparkles. Our method generates projection data dynamically from a virtual space and then casts it with multiple projectors, tracking the marker attached to the device which spouts fog at the fogscreen with infrared cameras and infrared floodlights. Finally we conducted a survey to verify the capabilities of "HANASUI" and its potential for art and entertainment purposes.