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Proceedings Articles

Task-Dependent Representation of Moving Objects Within Working Memory in Obstacle Avoidance

, PhD & , PhD
Pages 78-82 | Received 14 May 2010, Accepted 19 May 2010, Published online: 15 Sep 2010
 

Abstract

Purpose: The purpose of the study was the quantitative analysis of the working memory representation of dynamic objects related to gaze movement behavior.

Methods: Eighteen subjects participated in a virtual street-crossing paradigm. The primary task was collisions avoidance. To investigate the representation format, during a sub-task subjects were asked to reconstruct the traffic scene from memory.

Results: The distribution of cars positioned during the sub-task reveals a task-dependent (i.e., collision-relevant) representation of about four cars. In contrast, analysis of gaze behavior did not show a preference for collision-prone cars.

Conclusion: Subjects avoided collisions efficiently by applying a gaze strategy adequate to create a representation that fulfills the demands of the task. Collision-prone cars are more likely to be represented in memory, but not more likely to be fixated.

ACKNOWLEDGMENT

Declaration of Interest: The authors report no conflict of interest.

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