Systems and methods for assessing reaction performance based on surface biopotentials

Inventors

Ang, Dexter • Cipoletta, David • Valk, Henry

Assignees

Pison Technology Inc

Abstract

Systems and methods for gesture control are described. In some embodiments, a system for assessing a reaction performance of a user engaging with an interactive digital program based on biopotentials detected at an external surface of a skin portion of the user may be provided. The system may include the wearable device comprising one or more electrodes configured to be disposed adjacent to an external surface of the skin portion. A first timestamp may be determined indicating a first time at which a stimulus condition is presented to the user. A second timestamp may be determined indicating a second time at which the biopotential signals indicate an intention by the user to perform a responsive action in response to the stimulus condition. A subject response time for the user may be determined based at least on the first timestamp and the second timestamp.

Core Innovation

The invention assesses a reaction performance of a user engaging with an interactive digital program based at least in part on biopotentials detected at an external surface of a skin portion. The system includes one or more processors and a wearable device worn by the user, and the wearable device includes one or more electrodes disposed adjacent to the external surface of the skin portion, where the skin portion includes peripheral nerve tissue biologically coupled to a central nervous system of the user.

The system obtains biopotential signals generated at least in part by the peripheral nerve tissue. It determines a first timestamp indicating a first time at which a stimulus condition based on a graphical display is presented to the user during the interactive digital program, and it determines a second timestamp indicating a second time at which the biopotential signals indicate an intention by the user to perform a responsive action in response to the stimulus condition.

The system determines a subject response time based at least on an amount of time between the first timestamp and the second timestamp. In described implementations, biopotential signal analysis selects intention-indicative samples to set the second timestamp, multiple subject response times per session are used to derive an aggregate measure and a reaction-performance score, and reaction-performance metrics can include actions per minute, completion time, decision-making speed, response time, and time-to-target.

The document also discusses additional components for improving reaction-performance assessment, including timestamping using a monotonic clock and digitization using analog-to-digital converters, and optional use of additional sensing such as an IMU for gesture prediction that can drive downstream animation sequences. It further describes registering and using timing to support reaction-performance assessment during the interactive digital program and contrasts noise reduction and system latency relative to general CPU/display/input latency.

Claims Coverage

The independent claims are two: one system claim and one method claim. Together they define an end-to-end workflow with two key timestamps and determining subject response time from the time difference.

Across the independent claims, the core coverage ties reaction-performance assessment in an interactive digital program to electrodes on external skin over peripheral nerve tissue, a first timestamp for graphical stimulus presentation, a second timestamp when biopotentials indicate intention to respond, and computing subject response time from the timestamp difference. Dependent claims further narrow timestamp derivation and extend the workflow to multiple response times, aggregate measures, reaction-performance scoring metrics, and optional additional components such as IMU-based gesture prediction and monotonic-clock/ADC timestamping.

Stated Advantages

Documented Applications