Coding Scheme For Characterising Gaze Behaviour Of Prosthetic Use

During the performance of a task in which detailed visual information is central to its success the centre of the visual field (located at the fovea) is continuously focused on key visual cues within the scene [1]. Studies suggest that the visual behaviour during the performance of a novel and challenging upper limb task changes as subjects become skilled 1 [3]. For example, during the early stages of learning to use a hand-operated tool, gaze closely monitors the tool movement towards the target, to obtain visual feedback on its location. With training, the relationships between arm movements and tool location are established and thus tool location can be predicted from proprioceptive feedback. This leads to a change in gaze behaviour, with fixation increasingly moving to the target, rather than following the tool.