Modelling eye-hand movements in different visual feedback conditions

Viac o knihe

For effective interaction with the environment, individuals use their hands to manipulate objects while their eyes track the tasks. This sensory integration forms a complex control loop that requires measurement of the interplay between visual perception and movement execution. A simple angular reproduction test is insufficient; instead, capturing 3D arm movements and gaze direction is essential. In the study, a robot follows a defined trajectory, and participants are tasked with tracking it using their fingers. A motion analysis system records the upper extremity movements, determining angles at the wrist, elbow, shoulder, and sternoclavicular joint through a biomechanical model. Simultaneously, an Eye-Tracker monitors eye movements during this task. The spatial relationships between the robot, subject, and gaze are established within a common coordinate system. The goal is to develop a mathematical model of eye-hand coordination, characterized by a control loop where proprioception and visual perception are inputs, and finger movement is the output. By examining eye-hand coordination through control loops, the study aims to simulate and analyze dysfunctions related to perception and proprioception. Healthy subjects' trajectories will be compared with those of patients with sensory motor dysfunctions, allowing for a practical tool for quantitative analysis of arm, head, and eye movements, while incorporating proprioceptive sk