Abstract:
An eye movement measurement device is disclosed herein. The eye movement measurement device includes at least one light source configured to illuminate one or more eyes of a user; at least one video-based sensor configured to detect low speed eye movements of the one or more eyes of the user and output one or more first signals based upon the detected low speed eye movements; at least one non-video-based sensor configured to detect high speed eye movements of the one or more eyes of the user and output one or more second signals based upon the detected high speed eye movements; and a data processing device operatively coupled to the light source, the video-based sensor, and the non-video-based sensor. The data processing device configured to calculate one or more eye movement output values for the one or more eyes of the user using the first and second signals.
Abstract:
A force measurement system is disclosed herein. The force measurement system includes a force measurement assembly configured to receive a subject thereon, a visual display device having an output screen, and one or more data processing devices operatively coupled to the force measurement assembly and the visual display device. In the one or more embodiments, the force measurement assembly is a static force plate and the visual display device is a head-mounted visual display device or a visual display device having an output screen configured to at least partially circumscribe three sides of a torso of the subject. In one or more other embodiments, the force measurement assembly is a displaceable force plate and the visual display device is a head-mounted visual display device.
Abstract:
A balance and/or gait perturbation system is disclosed herein. The balance and/or gait perturbation system includes a balance and/or gait perturbation device, at least one visual display device having an output screen, and one or more data processing devices. The one or more data processing devices are operatively coupled to the balance and/or gait perturbation device and the at least one visual display device, the one or more data processing devices are configured to generate a stochastic signal for controlling a display parameter of one or more scenes on the output screen of the at least one visual display device, and the one or more data processing devices are further configured to display the one or more scenes on the output screen of the at least one visual display device using the stochastic signal such that the one or more scenes perturb a balance and/or gait of the person.
Abstract:
A force measurement system includes a force measurement assembly with a top surface configured to receive at least one portion of the body of a subject and at least one force transducer configured to sense forces and/or moments being applied to the top surface; at least one visual display device having an output screen, the output screen comprising an overhanging top portion so that a top edge of the output screen is not readily visible to the subject; and one or more data processing devices operatively coupled to the force measurement assembly and the at least one visual display device. In one or more embodiments, the force measurement assembly may be in the form of an instrumented treadmill. In one or more further embodiments, the force measurement system may additionally comprise a motion capture system configured to detect the motion of one or more body gestures of the subject.
Abstract:
A system and method for measuring eye movement and/or eye position and postural sway of a subject is disclosed herein. The system generally includes an eye movement tracking device, a postural sway detection device, and a data processing device operatively coupled to the eye movement tracking device and the postural sway detection device. During the execution of the method, the eye movement and/or eye position of the subject is measured using the eye movement tracking device, and the postural sway of the subject is measured using the postural sway detection device. A method for determining a gaze direction of a subject during a balance test and/or concussion screening test, and a method for assessment of a medical condition of a subject are also disclosed herein.
Abstract:
A system for testing the vision of a subject and/or training head-eye coordination associated with the vision of a subject is disclosed herein. The system includes a visual display device having an output screen, the visual display device configured to display one or more visual objects on the output screen so that the one or more visual objects are visible to the subject; and a data processing device, the data processing device operatively coupled to the visual display device, the data processing device being specially programmed to carry out the steps of the vision tests and training procedures. In one or more embodiments, the system may further include a motion sensing device, the motion sensing device configured to measure a velocity or speed of a head of a subject, and the motion sensing device being operatively coupled to the data processing device.
Abstract:
A force measurement system includes an instrumented treadmill with one or more treadmill belts configured to rotate at a plurality of different speeds, one or more speed adjustment mechanisms coupled to the one or more treadmill belts, and at least one force transducer. The force measurement system further includes a data processing device configured to receive one or more signals that are representative of one or more loads being applied to one or more respective surfaces of the one or more treadmill belts by a subject, and to convert the one or more signals into one or more output load components, the data processing device further configured to determine a position of a body portion of the subject and to control the speed of the one or more treadmill belts using the position determined for the body portion of the subject.
Abstract:
A force measurement system includes a force measurement assembly configured to receive a subject thereon; at least one visual display device having an output screen, the output screen of the visual display device configured to at least partially surround the subject disposed on the force measurement assembly, the visual display device configured to display at least one target or marker and at least one displaceable visual indicator, and/or one or more virtual reality scenes, on the output screen thereof; and one or more data processing devices operatively coupled to the force measurement assembly and the visual display device. A method for training a subject disposed on a force measurement assembly is also disclosed herein. A force and motion measurement system including a force measurement assembly, a motion detection system, at least one visual display device, and one or more data processing devices is additionally disclosed herein.