According to an embodiment of the disclosure, an add-on structure communicates with the mobile device to provide supplemental features to the mobile device for the conducting of one or more oculomotor tests at high signal to noise ratio. The add-on structure includes a stimuli providing portion. An application loaded upon the mobile device coordinate the interaction of the mobile device and add-on structure in the conducting of the oculomotor test. At least one of the add-on structure or the mobile device includes an infrared (IR) sensor and an at least one IR illuminator.

A method of deception detection based upon ocular information of a subject provides a video camera configured to record a close-up view of a subject's eye. A cognitive state model is configured to determine a high to a low cognitive load experienced by the subject. An emotional state model is configured to determine a high to a low state of arousal experienced by the subject. After asking a question, the ocular information is processed to identify changes in ocular signals of the subject. The cognitive state and emotional state models are evaluated based solely on the changes in ocular signals where a probability of the subject being either truthful or deceptive is estimated for a binary output.

A method of assessing operational risk based upon ocular information of a subject includes providing a video camera recording a close-up view of a subject's eye. The ocular information is processed to identify changes in ocular signals of the subject through the use of convolutional neural networks. Changes in ocular signals are evaluated from the convolutional neural networks by a machine learning algorithm. A duty fitness result is determined for the subject where the duty fitness result is either fit for duty, unfit for duty or more information needed. The results can then be displayed to the subject and/or to a supervisor.

A method of discovering relationships between iris physiology and cognitive states and/or emotional states of a subject includes providing a computing device and a video camera to record a close-up view of the subject's eye. A first light is held to the lower eyelid skin and a second light a distance away illuminating the stroma of the eye. The first and second light are electronically synced together and configured to flash alternatively. The user engages in a plurality of tasks while recording ocular information which is processed to identify correlations between the responses in the iris musculature and the distortions in the stroma through the use optimized algorithms. One can then identifying at least one predictive distortion is identified in the stroma capturable solely with a visible-spectrum camera correlating to a predicted responses in the iris musculature.

A method to optimize learning based upon ocular information of a subject includes providing a video camera for recording a close-up view of a subject's eye. A first electronic display shows a plurality of educational subject matter to the subject. A second electronic display shows an output to an instructor. Changes in ocular signals of the subject are processed through the use optimized algorithms. A cognitive state model determines a low to a high cognitive load experienced by the subject. The cognitive state model is evaluated based on the changes in the ocular signals for determining a probability of the low to the high cognitive load experienced by the subject. The probability of the low to the high cognitive load experienced by the subject is displayed to the instructor.

A system for transdermal alcohol sensing to be worn near a skin surface of a user, including: an alcohol sensor; a microporous membrane; a housing coupled to the alcohol sensor and the membrane, defining a volume between the alcohol sensor and a first membrane side, and fluidly isolating the volume from a second membrane side opposing the first membrane side; an electronics subsystem electrically coupled to the alcohol sensor, operable to power and receive signals from the alcohol sensor; and a fastener operable to position the second membrane side proximal the skin surface.

A system for transdermal alcohol sensing to be worn near a skin surface of a user, including: an alcohol sensor; a microporous membrane; a housing coupled to the alcohol sensor and the membrane, defining a volume between the alcohol sensor and a first membrane side, and fluidly isolating the volume from a second membrane side opposing the first membrane side; an electronics subsystem electrically coupled to the alcohol sensor, operable to power and receive signals from the alcohol sensor; and a fastener operable to position the second membrane side proximal the skin surface.

A portable wearable eye movement monitoring system, device and method are disclosed. The system comprises a sensor electrode array (22a, 22b) configured to be attached substantially about each of a plurality predetermined positions on a user's face, a logging unit 30 and a battery power source. The sensor electrode array (22a, 22b), when worn, is positioned laterally about the user's head with respect to the user's eyes whereby the portable wearable eye movement monitoring system is substantially outside the user's field of vision. The sensor electrode array (22a, 22b) is configured to obtain data on eye movements of the subject. The logging unit (30) is configured to communicate with the sensor electrode array (22a, 22b) to receive the obtained data and record the data in a data store, the battery power source being configured to power the wearable monitoring system for a plurality of days whereby data on eye movements of the subject is captured substantially continuously for said plurality of days.

Optokinetic nystagmus (OKN) is an eye movement elicited by the tracking of moving objects in a visual field. It is characterized by an alternating smooth pursuit in one direction and saccadic movement in the other direction. The presence or absence of OKN indicates whether or not the moving stimulus was visible to the observer, without the explicit cooperation of the observer. It can be a tool for objective visual acuity assessment for patients such as young children who lack cognitive, attentional and language capabilities. Since the patient's head movement and unstable eye gaze may occur during the test, which often brings noises and irrelevant activities in the responses, making recognition of presence/absence of the OKN a challenging task. The present invention, using a dynamic velocity threshold (DVT) filter, provides a system and method for a quick and reliable OKN test and quantitative assessment of visual acuity.

Embodiments herein relate to devices and related systems and methods for motion sickness prevention and mitigation. In an embodiment, a method of preventing or mitigating motion sickness in a subject is included, the method tracking motion of the subject using a first motion sensor; estimating a vestibular system input based on tracked motion of the subject; tracking head position of the subject using the first motion sensor; estimating a visual system input based on tracked head position of the subject; estimating consistency between the vestibular system input and the visual system input; and initiating a responsive measure if the estimated consistency crosses a threshold value. Other embodiments are also included herein.