Fitts's law is a predictive model of human movement primarily used in human-computerinteraction, ergonomics, and medical assessments. A cervical orientatedassessment allowsassessments of aspects of users such as injuries, concussions, impacts ofequipment as well asergonomic assessments etc. Accordingly, a three-dimensional visual targetacquisition system(3D-VTAS) provides measurements based upon a cervical oriented Fitts' Lawparadigm in amanner which provides for ease of use, high between-day reliability andvalidity based uponhealthy subject's performance. The 3D-VTAS also provides increased dataallowingdetermination / verification if there are movement trajectory or target sizeconfounds betweenthe measurements of a subject's performance and hence assessments of bothhealthy and non-healthyindividuals as well as assessments of ergonomic factors etc. Accordingly,subject andergonomic effects of movement trajectory and target size can be established ineither portableor fixed systems with rapid establishment and configuration.
