快適速度で自動縦スクロールする文章の読みにおける縦方向の視線位置

抄録

In reading text that is automatically scrolling vertically, the vertical gaze position is important because it indicates the relation between the scrolling speed and reading speed. We investigated this gaze position at a speed comfortable for the reader. We also investigated the effect of presenting limited information about the text below the text presentation area.

The results showed that participants gazed most frequently at the bottom line in the four-line display, and at the central line in the seven-line display. This suggests that the slower comfortable reading speed for the four-line display is related to reading at the bottom line. Presenting information below the text presentation area did not affect the comfortable reading speed nor the fixation duration. This suggests that the perceptual span of reading texts scrolling automatically does not extend below the reading line.