視覚探索における誘目性の定量化

抄録

In the present study we propose an evaluation method for the eye attraction (the probability of gaze following the first saccade) to object in visual search. We measured eye movements during visual search to clear eye attraction phenomena, and particularly investigated the effect of peripheral visual field on eye attraction according to visual feature dimensions. Eye movement data indicated that the probability of gaze following the first saccade gradually weakens in peripheral areas of visual field regardless of any visual feature dimension, and also depends on the number of object of the same visual feature or the same combination as visual feature. Therefore, the ease of gaze following the first saccade was formulated by taking consideration of such functions of eye attraction to object. As a result, our proposed model using the value can estimate the actual probability of gaze following the first saccade with high accuracy.