An apparatus used in a method for generating an ear electroencephalogram (EEG) signal from an ear of a patient includes: a housing; a first electrode provided on a first portion of the housing received within an ear canal of the ear, such that the first electrode is disposed against a first surface of the ear canal to generate a first ear canal signal; a second electrode provided on a second portion of the housing structured to be received within a concha of the ear when the first portion is received within the ear canal, such that the second electrode is disposed against a surface of concha to generate a concha signal; and electronic circuitry provided within the housing, the electronic circuitry being structured and configured to generate a first in ear signal after receiving the first ear canal signal and the concha signal.

An apparatus used in a method for generating an ear electroencephalogram (EEG) signal from an ear of a patient includes: a housing; a first electrode provided on a first portion of the housing received within an ear canal of the ear, such that the first electrode is disposed against a first surface of the ear canal to generate a first ear canal signal; a second electrode provided on a second portion of the housing structured to be received within a concha of the ear when the first portion is received within the ear canal, such that the second electrode is disposed against a surface of concha to generate a concha signal; and electronic circuitry provided within the housing, the electronic circuitry being structured and configured to generate a first in ear signal after receiving the first ear canal signal and the concha signal.

One aspect relates to a medical electrode, having a conductor, an insulation, which surrounds the conductor at least in some sections over its entire circumference, protrusions in the insulation, electrode segments arranged between the protrusions, and insulating areas arranged between the electrode segments, wherein the electrode segments have steps, wherein the steps engage with the insulating areas.

A biometric information presentation system that enables efficient training by obtaining biometric information without giving a subject a sense of discomfort. The biometric information presentation system uses a garment-type biometric information measuring apparatus including at least fabric having a 20% elongation stress of 20 N or less. A garment pressure of the garment-type biometric information measuring apparatus is 0.1 kPa or more and 1.5 kPa or less. A skin contact-type electrode is provided at a portion of the garment-type biometric information measuring apparatus at which a garment pressure is 0.3 kPa or more. The garment-type biometric information measuring apparatus is worn by the subject. From obtained electrocardiographic information is calculated an RRI, an indicator of parasympathetic activity and indicator of sympathetic activity. The biometric information presentation system presents this calculated result on a terminal device and presents an action based upon the result to achieve the efficient training.

An apparatus for measuring patient data includes a frame having a plurality of electrode hubs. Each hub can include one or more electrode members. The frame can be configured to receive a head of a patient. Each of the electrode hubs can have a single electrode member or a plurality of electrode members that extend from or are connected to an outer member for contacting a scalp of the head of the patient. The outer member can have at least one circuit configured to transmit data received by at least one of the electrode members to a measurement device via a wireless communication connection (e.g. Bluetooth, near field communication, etc.) or a wired communication connection.

A bonding device for a wearable device includes a first bonding structure and a second bonding structure. The first bonding structure includes a first wire connecting member, a first bonding member and an elastic member, and has a plurality of first mechanical structures configured to form a first mechanical bond and a plurality of first electrical contacts configured to form a first electrical bond, and the second bonding structure includes a first signal connecting line, wherein the first wire connecting member, the first bonding member, and the elastic member form the first mechanical bond through the plurality of first mechanical structures; the first wire connecting member, the first bonding member, and the elastic member form the first electrical bond through the plurality of first electrical contacts; and the elastic member is electrically connected to the first signal connecting line to combine the first bonding structure and the second bonding structure.

A conformable garment may fit snugly against, and may exert pressure against, skin in a region of a user's body. The garment may house multiple sensors that touch the user's skin. Each sensor may exposed to the user's skin through a hole in an inner surface of the garment. The garment may include elongated channels. Flexible, stretchable wiring may pass through a hollow central region of each channel. This wiring may provide electrical power to the sensors, and may enable wired communication between the sensors and a main hub. Each sensor may include an integrated chip and may be encapsulated in a waterproof material. Each sensor may output electrical signals that encode digital data and that are transmitted, via the wiring, to a main hub housed in the garment. The encapsulated sensors and the wiring may remain in the garment when the garment is washed.

The disclosure extends to methods, systems, and devices for determining and maintaining a consistent ground and ground saturation resistance in bioelectrical measurements and bio-conductivity testing. The disclosure also extends to methods, systems, and devices for applying and maintaining moisture to aid in acquiring a consistent ground reference during bio-conductance testing. The disclosure includes a conductive device configured to contact skin of a test subject during bioelectric testing. The conductive device itself includes a first conductive portion that is electrically conductive, one or more apertures formed through the first conductive portion, and moistening media that applies a conductive fluid to the skin of the test subject through the one or more apertures.

A system for performing fluid level measurements on a biological subject, the system including at least one substrate including a plurality of microstructures configured to breach a stratum corneum of the subject, at least some microstructures including an electrode, a signal generator operatively connected to at least one microstructure to apply an electrical stimulatory signal to the at least one microstructure and at least one sensor operatively connected to at least one microstructure, the at least one sensor being configured to measure electrical response signals from at least one microstructure. The system also includes one or more electronic processing devices that determine measured response signals, the response signals being at least partially indicative of a bioimpedance and perform an analysis at least in part using the measured response signals to determine at least one indicator at least partially indicative of fluid levels in the subject.

A system for performing fluid level measurements on a biological subject, the system including at least one substrate including a plurality of microstructures configured to breach a stratum corneum of the subject, at least some microstructures including an electrode, a signal generator operatively connected to at least one microstructure to apply an electrical stimulatory signal to the at least one microstructure and at least one sensor operatively connected to at least one microstructure, the at least one sensor being configured to measure electrical response signals from at least one microstructure. The system also includes one or more electronic processing devices that determine measured response signals, the response signals being at least partially indicative of a bioimpedance and perform an analysis at least in part using the measured response signals to determine at least one indicator at least partially indicative of fluid levels in the subject.