著者

金 相賢 盛川 浩志 河合 隆史

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.21, no.1, pp.121-129, 2016

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The effects of moods and emotions on correlations with direction methods for stereoscopic 3D images are the focus of this study. Specifically, we investigated the sense of fear in different 2D and 3D conditions as well as the different directing methods involved. Directional techniques were sorted into three categories according to the dynamic characteristics of the focus object in 3D space along the Z-Axis, XY-Axis, and Fixed-Axis directions. The emotional value of fear was characterized in terms of two values, valence and arousal, which were measured using the Self-Assessment Manikin (SAM) and skin potential reaction (SPR). The results indicated considerable differences in terms of viewing condition, directing method, and gender. SAM measurements indicated low valence and high arousal scores in 3D viewing condition. Furthermore, the effects of directing methods depended on the center and range of 3D space. Depth representation was a more important factor for female than male subjects. The SPR frequency increased during viewing Z-Axis direction in 3D condition.

著者

盛川 浩志 太田 文也 金 相賢 河合 隆史

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.21, no.4, pp.617-625, 2016 (Released:2017-02-01)

参考文献数

12

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This paper reports on the effect of the physical state of the body on touch sensations caused by collisions with virtual objects. The collision of a virtual object with a user's body in a virtual environment may cause an illusory touch, or haptic, sensation. We hypothesize that a real-world touch sensation of moving air on skin may augment an illusory touch sensation created by the visual representation of a collision with an object in a virtual scene. To assess this hypothesis, we performed experiments evaluating touch sensation in three conditions: with the user's body covered, with the user's body uncovered, and when blowing air onto the user. Our results showed that a touch sensation was strongly induced in the condition where the user's body was uncovered. Furthermore, the effect of blowing air onto the user differed depending on the body part that was stimulated and the representation of the virtual object. These results suggest that the top-down and bottom-up information for illusory touch sensation such as the user's physical state and the touch sensation of the air on skin had affected each other.

著者

百武 隼汰 盛川 浩志

出版者

一般社団法人 日本人間工学会

雑誌

人間工学 (ISSN:05494974)

巻号頁・発行日

vol.59, no.Supplement, pp.P2E1-11, 2023-09-07 (Released:2023-11-17)

著者

盛川 浩志 河合 隆史

出版者

ヒューマンインタフェース学会

雑誌

ヒューマンインタフェース学会論文誌 (ISSN:13447262)

巻号頁・発行日

vol.10, no.2, pp.191-198, 2008-05-25 (Released:2019-09-04)

参考文献数

25

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The 'body image' is a sense of ownership of our own body. Some report shows the body image is induced by the integration of cross-modal perception, such as, visual, tactile and proprioceptive perception. Other report indicates that synchronized cross-modal stimuli could induce the body image to visible object and subjects experienced that the visible object was recognizable as a part of their body. Accordingly, the development of new interface system for virtual reality is expected by using the body image. However, the body image is subjective experience and is hard to observe objectively. In this paper, we examine whether the measurement of brain activation using Near Infra-red Spectroscopy (NIRS) would able to observe the body image which is induced by cross-modal stimulation. In this experiment, the brain activation was measured around the temporal lobe to the occipital lobe, and asynchronously visual and proprioception stimuli have given to the subjects synchronously to change their body image. As a result, brain activities were observed around the Superior Temporal Sulcus (STS), the inferior parietal areas and the Extrastriate Body Area (EBA) which is reported that related to distinction of other body. Controversially, Subjects reported that they experienced the body image to the CG model displayed as visual stimuli. Our result shows there are some possibilities that the body image would be induced by some inconsistent cross-modal stimuli.

著者

星野 直紀 小宮山 摂 盛川 浩志

雑誌

第79回全国大会講演論文集

巻号頁・発行日

vol.2017, no.1, pp.287-288, 2017-03-16

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弓道の訓練において、初心者が個人で練習することは、指導者の有無や場所などの制約が多く、効果的な練習は困難である。本研究ではモーションキャプチャを用いた弓道練習システムを提案する。弓道経験者の射の動きを正規化した手本データをもとに射形の誤りを検出する既存のシステムに加え、訓練者の行っている射の段階を自動認識するシステムと、視覚的にわかりやすいフィードバックを実装し、より実用的なシステムを作成した。

著者

金 相賢 盛川 浩志 三家 礼子 渡邊 克巳 河合 隆史

出版者

ヒューマンインタフェース学会

雑誌

ヒューマンインタフェース学会論文誌 (ISSN:13447262)

巻号頁・発行日

vol.18, no.4, pp.329-338, 2016-11-25 (Released:2019-07-01)

参考文献数

34

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We evaluated the effects of disparity conditions such as degree of crossed/uncrossed disparity on the preference occurring during the cognitive process of preference judgment by using psychological and physiological indices. First, we performed paired comparisons of 20 novel shapes without disparity in order to select eight stimuli with minimum bias during preference judgment. Second, we investigated the effects of parallax characteristics on the feeling of preference by using 24 stimuli created by adding three disparity conditions (0.3°, -0.3° and -1.1°) to the eight previously determined stimuli. Moreover, psychological indices were determined by paired comparisons of preference judgment and physiological indices were determined by measurements of eye movement, eye fixation time, and view count during the process of preference judgment. The paired comparisons showed that the participants preferred higher crossed disparity and higher parallax angles. The eye movement measurements showed that eye fixation time and view count increased during conditions of crossed disparity rather than uncrossed disparity, and this increase was directly proportional to the degree of parallax angle. We argue that the reasons for this may be related to the attraction of the crossed disparity and the familiarity and novelty that complements the addition of parallax.

著者

金 相賢 盛川 浩志 渡邊 克己 河合 隆史

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.21, no.4, pp.675-683, 2016 (Released:2017-02-01)

参考文献数

22

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In this study, the effects on concentration of attention, cognitive activity such as memory was examined in consideration of humans' cognitive characteristic over 3D images about the partial 3D image which changed a part of picture. The experiment of concentration of attention was carried out by measuring reaction time in visual search task using a simple visual target and eye fixation while viewing natural color image. On the other hand, the experiment of cognitive effect such as memory, the searching time until the changes are recognized were computed using the change blindness subject. That needs the cognitive activity of comparing by memorizing a picture temporarily while turning a look for detection of change. As a result, it was suggested by the partial 3D image that an object has the cognitive effect which is easy to go up to consciousness and to remain in memory.