A device with rotatable footpads for use with interactivity systems and method for same are disclosed. The apparatus may comprise a stanchion for supporting two footpads, wherein the two footpads rotate on an axis passing through the stanchion; a plurality of sensors that detect the rotation of each footpad; and a controller transmitting signals from the plurality of sensors representing the rotation of each footpad to a virtual reality system. The method for using the apparatus may comprise stabilizing footpads by a mechanical means detecting the rotation of the footpads on an axis passing through the footpads via sensors of the footpads that detect rotation of the footpads; and transmitting a digital representation of the rotation of the footpads to a interactivity system.

Various embodiments provide systems and methods for identifying impairment using measurement devices.

A feedback device for measuring pressure related information, and for providing that information in a way that is useful to the wearer of the device. At least one sensor detects pressure information and transmits at least one pressure information signal to a signal processing subsystem. The signal processing subsystem converts the received pressure information signal into at least one stimulation control signal. The signal processing subsystem then transmits the stimulation control signal to at least one stimulator, which provides stimulation to a wearer of the device reflecting the stimulation control signal received from the signal processing subsystem.

In one aspect, the disclosure features methods for estimating a vestibular function of a subject. The methods include moving the subject along a first direction parallel to the direction of gravity, receiving a first input set from the subject, the first input set indicating the subject's perception of the first direction, and estimating a first parameter related to a first vestibular function of the subject based on the first input. The methods further includes changing an orientation of the subject with respect to the earth, moving the subject along a second direction after changing the orientation of the subject, and receiving a second input set from the subject, the second input set indicating the subject's perception of the second direction.

Systems and methods for assessing ocular cyclotorsion are provided utilizing an inter-aural axis location assembly, with a first gyroscope connected to the inter-aural axis location assembly, and a camera assembly for retinal imaging, with a second gyroscope connected to the camera assembly. A processor is utilized to calculate angles between the disc-foveal line, skull-horizontal axis, and earth-horizontal axis for use in determining ocular cyclotorsion, and the determinations or calculations may be used to generate a diagnostic report that may be provided via an output device.

Methods and apparatus for controlling any aspect of a virtual environment in a mobile or wearable device are described, where the user is performing a gait activity such as walking, jogging or running, and the controlling is performed leveraging the gait characteristics of the user. For example, the gait characteristics may include velocity and stride length, and the sensors utilized to obtain any contextual information may be accelerometers.

A method for measuring the gaze direction and postural sway of a subject is disclosed herein. The system generally includes an eye movement tracking device, a head position detection device, a postural sway detection device, and a data processing device operatively coupled to the eye movement tracking device, the head position detection 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, the position of the head of the subject is measured using the head position detection device, and the postural sway of the subject is measured using the postural sway detection device. A method for measuring the eye movement and/or eye position and postural sway of a subject during a balance test and/or a concussion screening test and a method for assessment of a subject are also disclosed herein.

A berg balance testing apparatus includes: a floor frame that is a stage on which the examinee takes movements; a plurality of first sensors that is disposed in sections divided to have a predetermined area on the floor frame and senses positions of the feet of the examinee; a second sensor that is disposed at a predetermined distance from the first sensors and senses movements of the examinee; a controller that performs a berg balance test on movements of the examinee on the basis of information sensed and transmitted by the first sensors and the second sensor; and a display that receives berg balance test guide and test result information from the controller and outputs the information through images.

A person's fall risk may be determined based on machine learning algorithms. The fall risk information can be used to notify the person and/or a third party monitoring person (e.g. doctor, physical therapist, personal trainer, etc.) of the person's fall risk. This information may be used to monitor and track changes in fall risk that may be impacted by changes in health status, lifestyle behaviors or medical treatment. Furthermore, the fall risk classification may help individuals be more careful on the days they are more at risk for falling. The fall risk may be estimated using machine learning algorithms that process data from load sensors by computing basic and advanced punctuated equilibrium model (PEM) stability metrics.

In one embodiment, one or more suspension systems of a vehicle may be used to mitigate motion sickness by limiting motion in one or more frequency ranges. In another embodiment, an active suspension may be integrated with an autonomous vehicle architecture. In yet another embodiment, the active suspension system of a vehicle may be used to induce motion in a vehicle. The vehicle may be used as a testbed for technical investigations and/or as a platform to enhance the enjoyment of video and/or audio by vehicle occupants. In some embodiments, the active suspensions system may be used to perform gestures as a means of communication with persons inside or outside the vehicle. In some embodiments, the active suspensions system may be used to generate haptic warnings to a vehicle operator or other persons in response to certain road situations.