Article
Head movement behaviour during an auditory guided visual search task (en)
* Presenting author
Abstract:
Active sound localisation is a multisensory process that incorporates information from the sensorimotor system on the position of the head, alongside the acoustic cues obtained from an incoming sound stimulus. Models for human sound localisation that include head motion have been proposed earlier, but they do not define any constraints on the executed head movements. For a more complete model, a separate movement model is required to describe natural head motion. Studies on natural head movements have shown that head movement is task-dependent, so a model for one task may not be applicable to another. For example, in tasks that include vision, the eyes provide additional rotational degrees of freedom, which may affect movements made with the head. Similarly, movement of the torso may decrease the need to make larger rotations with the head. The goal of the current study is to investigate head movement behaviour during an auditory guided visual search task in a seated position. Additionally, we tested with constraints on eye and torso movements, to investigate their influence on head motion.