著者

吉元 俊輔 青山 一真 梶本 裕之 西川 敦

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.58, no.4-5, pp.147-159, 2020-09-10 (Released:2020-10-30)

参考文献数

46

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Studies about electrical current passing through the body such as bioelectricity measurement, electrical excitation, and electrical stimulus have contributed to the field of medical and biological engineering. To evaluate the applicability of the Clinical Trials Act, stimulus conditions are needed to be designed based on the understanding of safety criteria provided by various organizations, as well as the effects of the electricity applied to the human body. Because electrical current causes various effects such as perception, pain, injury, and fibrillation, safety design is essential. This paper summarizes the effects and safety criteria of the electricity applied to the human body based on the available guidelines. Furthermore, effects and criteria of the electricity applied to the head are discussed. Finally, we present an example of the stimulus evaluation to confirm the applicability of the Clinical Trials Act.

著者

舘 暲 岩田 洋夫 安藤 英由樹 小泉 直也 中村 拓人 吉元 俊輔 白井 暁彦 長谷川 晶一

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誌 (ISSN:13426680)

巻号頁・発行日

vol.24, no.4, pp.39-43, 2019-12-31 (Released:2021-04-08)

著者

吉元 俊輔 黒田 嘉宏 井村 誠孝 大城 理

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.16, no.3, pp.307-315, 2011

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Tactile feedback of the quantified shape feature according the tactual exploration with an interface is required. Electrotactile display fits together with an input interface because of its small and simple stimulator. The level of the self-similarity is one of the quantified shape features of an object. In order to present a self-similar object, the electrotactile display which can control the sensation of the skin indentation is required. In this study, we proposed the representation of the skin indentation by modulating with pulse rate of the uni-stimulus to present self-similarity of an object. To calculate the stimulus according to the tactual tracing of an arbitrary surface, the simplified skin indentation is estimated and modulated by the pulse rate. Furthermore, the developed electrotactile mouse had an anode and a ground electrodes to present the stimulus at a fingertip during the manipulation. The relationship between pulse rate and the sensory intensity of the skin indentation and the discrimination of the dimension of the self-similarity were examined. The results indicated that electrotactile pulse rate modulation of the skin indentation was effective below the pulse rate 100pps, and users could discriminate the level of the self-similarity.