A virtual reality and augmented reality system configured for meditation applications including a headset comprising an adjustable strap and a display. The headset further includes heating and cooling elements to provide an immersive virtual reality environment to a wearer. The virtual reality system is operable to determine the physiological condition of the wearer and adjust the virtual reality environment based on the physiological condition of the wearer.

Various embodiments of a user-wearable device can comprise a frame configured to mount on a user. The device can include a display attached to the frame and configured to direct virtual images to an eye of the user. The device can also include a light source configured to provide polarized light to the eye of the user and that the polarized light is configured to reflect from the eye of the user. The device can further include a light analyzer configured to determine a polarization angle rotation of the reflected light from the eye of the user such that a glucose level of the user can be determined based at least in part on the polarization angle rotation of the reflected light.

A biological measuring device includes a light source that emits first light illuminating an area on a living body, an imaging device that detects second light returned from the living body and acquires a first image including at least part of the living body, and a control circuit that controls the light source. If a specific part of the living body is not located in a predetermined coordinate range in the first image, the control circuit restricts emission of the first light from the light source. The predetermined coordinate range is set outside the area.

An optimization system for testing a patient's hearing comprises a controller, an ear piece, and a memory. The controller: provides a series of tones to the ear piece; receives feedback from the patient between each tone; generates a data point to be used in an audiogram after receiving each feedback; after each data point is generated, computes a statistical distribution based on the generated data points; identifies an area of the statistical distribution most in need of additional data; and selects a subsequent tone to provide in the series of tones. Each feedback indicates whether the respective tone was detected or not detected, and each data point is based on the respective feedback. Each subsequent tone provided in the series of tones is a tone represented in the area of the statistical distribution most in need of additional data at the time of selection.

Example headsets and electrodes are described herein. Example electrode units described herein include a housing having a cavity defined by an opening in a side of the housing and an electrode. In some such examples, the electrode includes a ring disposed in the opening and an arm, where the arm has a first portion extending outward from the opening away from the housing and a second portion extending from an end of the first portion toward the housing and into the cavity, and the first and second portions connect at a bend.

A head guard is provided. The head guard includes one or more sensors as part of an sensory input and communications system. The head guard wirelessly communicates data to remote computing devices for intelligent data collection.

A virtual or augmented reality system is disclosed which is capable of both (i) evaluating prospective implantable neurostimulator patient candidates, and (ii) determining optimal stimulation settings for already-implanted neurostimulation patients. Physiological sensors are included with the system to provide objective measurements relevant to a patient's symptoms, such as pain in a Spinal Cord Stimulation (SCS) system. Such objective measurements are determined during the presentation of various virtual or augmented environments, and can be useful to determining which patients are suitable candidates to consider for implantation. Stimulation settings for already-implanted patients may be adjusted while presenting a virtual or augmented environment to the patient, with objective measurements being determined for each stimulation setting. Such objective measurements can then be used to determine optimal stimulation settings for the patient.

A physical area network for detecting head injuries described herein enables significantly improved cranial health monitoring and treatment by utilizing internal (in-body) mechanisms and information and external mechanisms and information.

An article of manufacture for providing a CO.sub.2 monitoring smart facemask assembly according to the present invention includes_a CO.sub.2 sensor component having a CO.sub.2 sensor, a serial data connection, and a power connection, a set of connecting wires, and_a controller unit coupled to the CO.sub.2 sensor component by the set of connecting wires. The controller unit includes a programmable microcontroller, the programmable microcontroller receives a measure of a current CO2 value from the CO.sub.2 sensor component, a battery, one or more visual alarm devices; and_an auditory alarm device and an alarm reset button 207. The microcontroller activates the one or more visual alarm devices and the auditory alarm devices when the current CO.sub.2 value is greater than a pre-defined threshold. This warning will ensure safety of the user and an option to shut the alarm off, thereby after the warning has been acknowledged. The one or more visual alarm devices include one or more LEDs and a display device. The display device shows an alpha-numeric representation of the current CO.sub.2 value measured by the CO.sub.2 sensor component.

According to one aspect of the invention, there is provided a method for assessing blood flow regulation performance based on hemodynamics, comprising the steps of: calculating second biometric information corresponding to a time differential of first biometric information on a hemoglobin concentration measured from a cerebral part of a subject; and assessing blood flow regulation performance of the subject with reference to a response that occurs in the second biometric information in correspondence to a change in a posture of the subject.