Three-dimensional binocular eye-hand coordination in normal vision and with simulated visual impairment.

ABSTRACT: Sensorimotor coupling in healthy humans is demonstrated by the higher accuracy of visually tracking intrinsically-rather than extrinsically-generated hand movements in the fronto-parallel plane. It is unknown whether this coupling also facilitates vergence eye movements for tracking objects in depth, or can overcome symmetric or asymmetric binocular visual impairments. Human observers were therefore asked to track with their gaze a target moving horizontally or in depth. The movement of the target was either directly controlled by the observer's hand or followed hand movements executed by the observer in a previous trial. Visual impairments were simulated by blurring stimuli independently in each eye. Accuracy was higher for self-generated movements in all conditions, demonstrating that mo

SUBMITTER: Maiello G 

PROVIDER: S-EPMC6693328 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature