立體深度的注意力攫取效果

Abstract

立體深度上的高對比是否能攫取注意力，目前瞭解仍有限。實驗一請實驗參與者從四個字母中搜尋目標物，操弄目標物或其他一個字母（干擾物）的立體深度。實驗二請實驗參與者閱讀新聞網頁，操弄網頁右側網路廣告的立體深度。兩個實驗結果顯示，正像差（出現在螢幕後），負像差（出現在螢幕前）置入干擾物會對主要任務有負面效果：實驗一拖長找到目標物的反應時間，實驗二降低對新聞內文的記憶。眼動模式發現正像差較早被看到，但負像差有較強的重複攫取注意力與攫取後維持注意力。結論指出立體深度會攫取注意力，但記憶效果不佳。

Whether high contract in stereoscopic depth can capture attention is not yet fully understood. Experiment 1 asked participants to search for a target letter among three non-target letters. The depth of either the target letter or one of the non-target letters was manipulated. Experiment 2 asked participants to read online news. The depth of a display ads on the right side of online news was manipulated. The results showed that compared with positive disparity (the object appearing in front of the screen), negative disparity (the object appearing behind the screen) had negative effects on the performance of the primary task: it took longer to find the target letter in Experiment 1; news memory was worse in Experiment 2. Eye movement pattern found that negative disparity resulted in high revisit and sustained attention. It is concluded that negative disparity elicits stronger attentional capture than positive disparity.