Abstract: A virtual or augmented reality based system for assessment and measurement of reaction time is disclosed. In various embodiments the system, methods, and computer program products relate to assessing and measuring a reaction time of a patient/user in virtual reality (VR) or augmented reality (AR) environments. The VR/AR system may provide a sensory stimulus to the patient/user in the VR/AR environment, determine a plurality of motion parameters, and determine a reaction time based on the plurality of motion parameters by applying a time window selection model. In various embodiments, a time window shrinkage model may be applied after the time window selection model.

Abstract: Provided herein are control and monitoring protocols for a virtual or augmented reality environment provided to patients, and which enable a trainer to have real-time monitoring and control of the virtual reality environment. In various embodiments, a virtual environment is provided to a first user at a first location. Data (e.g., biometric data) is collected based on the first user's interaction with the virtual environment while engaging in a training protocol. A real-time mirrored view of the virtual environment is provided to a second user via a network. The data and one or more control tools are provided to the second user. The control tools are configured to adjust one or more parameters of the virtual environment. A selection of at least one of the control tools is received form the second user and the virtual environment is adjusted based on the selection.

Abstract: An extended reality-based system for dynamic assessment of upper extremity impairments is disclosed. A virtual environment is provided to a user. A target path is received. A sensory stimulus is presented to the user. Three-dimensional position information is determined for one or more body part defining a recorded path. A plurality of motion parameters corresponding to a user response to the stimulus are determined by: comparing the recorded path to the target path, determining a smoothness metric of the recorded path, determining starting coordinates and ending coordinates of the path, determining a first time period from presentation of the sensory stimulus to when motion of the one or more body part begins, and determining a second time period for motion between the starting coordinates and the ending coordinates. At least one index indicative of upper extremity impairment from the plurality of motion parameters.

Abstract: A virtual or augmented reality based tracking system for assessment of postural sway is provided. In various embodiments, positional data are collected from a user from a headset and/or one or more hand sensors. The positional data is processed to determine the center of mass of the user. In determining of the center of mass, positional data may be given a higher or lower weight compared to other positional data. A virtual reality environment is presented to the user through the headset and may be altered to simulate unbalancing of the user. The raw position data and center of mass are sent to a remote server. A report of user sway is generated from the center of mass. Nausea reduction may be implemented by narrowing a field of vision of the user.

Abstract: A virtual or augmented reality based tracking system for assessment of postural sway is provided. In various embodiments, positional data are collected from a user from a headset and/or one or more hand sensors. The positional data is processed to determine the center of mass of the user. In determining of the center of mass, positional data may be given a higher or lower weight compared to other positional data. A virtual reality environment is presented to the user through the headset and may be altered to simulate unbalancing of the user. The raw position data and center of mass are sent to a remote server. A report of user sway is generated from the center of mass. Nausea reduction may be implemented by narrowing a field of vision of the user.

Abstract: A virtual or augmented reality based system for assessment and measurement of reaction time is disclosed. In various embodiments the system, methods, and computer program products relate to assessing and measuring a reaction time of a patient/user in virtual reality (VR) or augmented reality (AR) environments. The VR/AR system may provide a sensory stimulus to the patient/user in the VR/AR environment, determine a plurality of motion parameters, and determine a reaction time based on the plurality of motion parameters by applying a time window selection model. In various embodiments, a time window shrinkage model may be applied after the time window selection model.