Effect of neck range of motion limitations on the use of head controls

Computer head controls provide an alternative means of computer access for people with disabilities. Reduced neck range of motion due to disability was found to be correlated with reduced accuracy and speed in icon selection using head controls. Five alternative interfaces were developed and evaluated to determine their potential to compensate for a user's reduced neck range of motion. Based on the final results of this evaluation, one interface method will be selected. The parameters of this interface will be automatically tuned to an individual user's limitations and abilities. The interface will be further evaluated in order to determine its effectiveness in helping people operate a computer using head controls.