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

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
伴地 芳啓 吉川 佳祐 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.23, no.3, pp.217-227, 2018 (Released:2018-09-30)
参考文献数
20

The authors examined the effects of chair swiveling with the psycho-physiological effects of viewing short segments of 360° videos using a head-mounted display (HMD) in terms of the type of content. Twenty participants viewed 360° videos with varying features using an eye-tracking HMD consisting of a smartphone fitted in a case containing optics. Ten participants were seated on a swivel chair and the others on a fixed one. Objective indexes on gaze and body rotation and subjective indexes on simulator sickness, emotional reaction and immersion were measured. It was found that the features of content, especially camera motion, affect psychological effects like discomfort and observation behavior, and chair swiveling affects the behavior looking around, the reception of visual information and emotional response. It turns out that the rotating chair, which is easy to think that it supports the action the user sees, does not necessarily contribute to the user experience.
著者
山添(池下) 花恵 河合 隆史 宮尾 益知
出版者
日本教育工学会
雑誌
日本教育工学会論文誌 (ISSN:13498290)
巻号頁・発行日
vol.32, pp.13-16, 2008
参考文献数
11
被引用文献数
1

本研究では,学習障害児の視覚的な認知特性に着目し,コンピュータ上での視覚的訓練方法を考案した.具体的には,漢字1文字を字画に分解し,再構成させる方法(分割・再構成法)である.漢字を細分割化し,視覚的に字画の形状を区別できるようにすることが,小児の書字スキルにどのように影響するかを調べた.学習障害児に,分割・再構成法による書字学習と視写法による書字学習を行い,訓練効果を比較した.その結果,短時間の訓練において,習得した漢字の構成に関する記憶は,分割・再構成法で長期間保持されることがわかった.視覚性の記憶が優位な学習障害児において,本法を用いた学習の有効性が示唆された.
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

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.