How Many Objects are You Worth? Quantification of the Self-Motion Load on Multiple Object Tracking

Frontiers in Psychology

Laura E. Thomas¹ 

关键词: multiple object tracking;    spatial updating;    self-motion;   

DOI  :  10.3389/fpsyg.2011.00245

学科分类：心理学（综合）

来源: Frontiers

【 摘 要 】

Perhaps walking and chewing gum is effortless, but walking and tracking moving objects is not. Multiple object tracking is impaired by walking from one location to another, suggesting that updating location of the self puts demands on object tracking processes. Here, we quantified the cost of self-motion in terms of the tracking load. Participants in a virtual environment tracked a variable number of targets (1–5) among distractors while either staying in one place or moving along a path that was similar to the objects’ motion. At the end of each trial, participants decided whether a probed dot was a target or distractor. As in our previous work, self-motion significantly impaired performance in tracking multiple targets. Quantifying tracking capacity for each individual under move versus stay conditions further revealed that self-motion during tracking produced a cost to capacity of about 0.8 (±0.2) objects. Tracking your own motion is worth about one object, suggesting that updating the location of the self is similar, but perhaps slightly easier, than updating locations of objects.

【 授权许可】

CC BY