Enhancing presence in mixed reality (MR) relies on precise measurement and quantification. While presence has traditionally been measured through subjective questionnaires, recent research links presence with objective metrics like reaction time. Past studies examined this correlation with varying technical factors (object realism and behavior) and human conditioning, but the impact of interaction remains unclear. To answer this question, we conducted a within-subjects study (N=50) to explore the correlation between presence and reaction time across two interaction scenarios (direct and symbolic) with two tasks (selection and manipulation). We found that presence scores and reaction times are correlated (correlation coefficient of $-0.54$), suggesting that the impact of interaction on reaction time correlates with its effect on presence.

翻译：增强混合现实（MR）中的临场感依赖于精确的测量与量化。传统上临场感主要通过主观问卷进行测量，而近期研究将临场感与反应时间等客观指标联系起来。以往研究考察了不同技术因素（物体真实感与行为）及人类条件作用与此关联性的影响，但交互的作用尚不明确。为解答此问题，我们开展了一项被试内研究（N=50），通过两种交互场景（直接式与符号式）和两项任务（选择与操控），探究临场感与反应时间之间的相关性。研究发现临场感评分与反应时间存在相关性（相关系数为$-0.54$），表明交互对反应时间的影响与其对临场感的作用具有关联性。