Systems and methods for measuring reactions of head, eyes, eyelids and pupils

Abstract

Systems and methods are provided to measure reaction times and / or responses for head, eye, eyelid movements, and / or changes in pupil geometry. The system includes eyewear or headwear including one or more eye-tracking cameras for monitoring the position and geometry of at least one eye and its components of the user, one or more scene cameras for monitoring the user's surroundings, and one or more processors to determine reaction times. Optionally, the system may include one or more of a multi-axis accelerometer to monitor head movements, light sources to trigger visual evoked responses, and / or electronic inputs that may be used to indicate the time of occurrence of external reference events. Measured reaction times and other measurements may be monitored for use in a range of applications. Responses and reaction times may be measured continuously over extended periods, even over a lifetime to measure consequences of the aging process.

Description

technical field [0001] The present invention relates to apparatus and methods for unobtrusively measuring reaction times and / or other responses and subsequent changes in the device wearer's head, eyes, eyelids and / or pupils following an event generated in the device wearer's general environment . Background technique [0002] An individual's response to a spontaneously or intentionally generated event involves multiple complex neural and physiological steps including detection, conduction of neural pathways, synaptic connections, perception, cognition, and neuromuscular control. Normal activity or disturbance of any anatomical structures or chemical reactions involved in these steps, as well as physiological awareness and training, can affect an individual's response magnitude and reaction time. Unobtrusive devices that measure reaction times and / or other responses of individuals over brief (i.e., seconds to minutes) or extended (i.e., days or even years) periods of time ha...

AI Technical Summary

Problems solved by technology

Head / eye trackers generally become unobtrusive as the distance from the eyes increases; however, it becomes increasingly difficult for head / eye trackers to accurately measure the wearer's head and / or eye position, due to the need for higher spatial resolution of the camera

In addition, the wide range of head movements can cause a complete loss of the ability to track the position of the wearer's eyes and eye components

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