- 著者
- Kenji YOKOI Katsumi WATANABE Ryo KATO Takashi KAWAI Tadashi SATO Takashi YAMAZAKI Hitoshi YAMAGATA
- 出版者
- Japan Society of Kansei Engineering
- 雑誌
- KANSEI Engineering International (ISSN:13451928)
- 巻号頁・発行日
- vol.6, no.2, pp.13-18, 2006 (Released:2010-06-28)
- 参考文献数
- 24
- 被引用文献数
- 3 5
In this study, we applied a gaze-contingent window method to measure the spatial distribution of visual attention while playing an action video game. The peripheral visual field of a player was restricted to an area around the gaze by masks with various spatial extents. The quantitative relationship between window size and game performance confirmed that superior players had a wider distribution of visual attention than inferior players. An additional analysis of eye movements showed that the mean length of saccadic eye movements (indicating an overt allocation of attention) of inferior players was comparable to that of superior players. These results suggest that the difference in game performance between inferior and superior players may be due to the qualitative difference in the efficiency of covert allocation of visual attention. The present study also indicates the applicability of the gazecontingent window method for the online evaluations of performance and learning during dynamic visual-motor tasks.
- 著者
- Kenji YOKOI Tsuyoshi TOMITA Shinya SAIDA
- 出版者
- 日本感性工学会
- 雑誌
- Kansei Engineering International Journal (ISSN:18840841)
- 巻号頁・発行日
- vol.11, no.3, pp.101-107, 2012 (Released:2012-07-02)
- 参考文献数
- 12
Although many studies have examined eye movements in reading, it is unclear what factors separate fast readers from slow readers. Some studies suggest that effective visual field size should be a dominant factor. However, a direct link between reading speed and effective visual field is under controversial. To clarify this issue, we investigated eye movements in reading in conjunction with speed reading training. Four participants (approx. 600 letters per minute in Japanese) improved thier reading speed through training for half an hour per day for 30 days. Reading performance of Japanese editorial articles was recorded every five days of training by the gaze-contingent window method. In three participants, effective visual field size did not increase in the same manner as reading speed which increased up to 1000 lpm. Instead, we found that in those three participants mean saccadic length became longer due to the reduction of short and unsystematic saccades. On the contrary, one participant showed high correlation between effective visual field and reading speed. Our results suggest that not only the size of the effective visual field but also efficiency of comprehension at a single gaze may be important factors for reading speed. The qualitative discrepancy among individuals suggests the existence of multiple strategies for fast reading.