Apparatus, system, and computer-readable media measure electroencephalography (EEG) signals or ERG signals generated from a device that presents a series of images on a timing cycle to a subject. The apparatus comprises a Central Processing Unit (CPU), Power Supply Unit (PSU), Random Access Memory (RAM), and a hard drive (HDD). The apparatus further includes at least one electrode and a photo-sensor like a photodiode for conversion of light into electric current. The CPU is operable with software for converting the EEG or ERG signals evoked from the visual stimuli to provide data and retrieving the status of EEG signals.

A textile-based hydrogel electrode comprises a textile-based backing layer, a conductive structure coupled to the textile-based backing layer, and a hydrogel body in contact with at least a first portion of the conductive structure, wherein the first portion of the conductive structure and the hydrogel body form an ionic interface configured to generate an electrical signal through the conductive structure corresponding to a biopotential change proximate to the textile-based hydrogel electrode.

A wearable device for administering an electroretinography examination to a wearer can have a housing that defines a first and a second compartment. Each of the first and second compartments can comprise: a stimulation light source, a focal light source, an active electrode that is configured to engage skin of the wearer, and a reference electrode that is spaced from the active electrode and configured to engage skin of the wearer. A processor can be communicatively coupled to the stimulation light source, the active electrode, and the reference electrode of each of the first and second compartments of the housing. A memory can be in communication with the processor. The device can perform a method comprising: causing the stimulation light source of the first compartment to flash; and storing a signal from the active electrode of the first compartment. The housing can further comprise a ground electrode.

A wearable device for administering an electroretinography examination to a wearer can have a housing that defines a first and a second compartment. Each of the first and second compartments can comprise: a stimulation light source, a focal light source, an active electrode that is configured to engage skin of the wearer, and a reference electrode that is spaced from the active electrode and configured to engage skin of the wearer. A processor can be communicatively coupled to the stimulation light source, the active electrode, and the reference electrode of each of the first and second compartments of the housing. A memory can be in communication with the processor. The device can perform a method comprising: causing the stimulation light source of the first compartment to flash; and storing a signal from the active electrode of the first compartment. The housing can further comprise a ground electrode.

The present invention relates to a non-invasive transdermal apparatus for measuring complex impedance of body tissue. The apparatus comprises: at least two electrodes coupled, in use, to the surface of the skin; a signal source to deliver an electrical potential to the electrodes; a monitor to detect changes in the signal passing through body tissue between the electrodes; and a processor operatively coupled to the signal source and monitor and configured to: use the signal source to apply a potential to the electrodes to reduce the electrical impedance of the stratum corneum; and use the monitor to measure complex transdermal impedance AC signals corresponding to and dispersion spectra.

Embodiments of the present disclosure are directed to a wearable phototherapy eye device. In an example, phototherapy can be controlled by varying an emission property of light emitted from the wearable phototherapy eye device to a user eye. In particular, the wearable phototherapy eye device includes a light source oriented to emit the light towards the user eye. The wearable phototherapy eye device also includes controls, such as electrical, mechanical, and/or electro-mechanical controls, to vary the emission property of the light based on an emission target associated with a sleep phase.

Device with an electrode arrangement with a plurality of electrodes for measuring electric signals on a face surface of a head of a user and behind an ear of the user; and with a carrier structure. The carrier structure at least partially defines a relative position of the electrodes to one another, and the carrier structure is shape-stable within a tolerance range without external force exerted by a user and deformable under external force exerted by the user, in order to change a distance between two adjacently arranged electrodes and/or to area-comprehensively adapt to face and head structures. The carrier structure is configured to position at least a part of the electrode arrangement on the face surface and behind the ear.

A stretchable and flexible sensing device includes a first elastic membrane, a first strain sensor and a processing unit. The first elastic membrane has a first surface, a second surface and a plurality of electrode contacts. The first surface and the second surface are disposed of opposite to each other and the electrode contacts are disposed on the first surface. One of the electrode contacts is as ground terminal. The first strain sensor is disposed on the first surface by printing technology so as to electrically connect to the electrode contacts. The processing unit is electrically connected to the electrode contacts. The processing unit operates according to a stretch resistance value of one of the first strain sensor.

Biometric information about a person may be collected and analyzed to gain insight into the person's physical and/or emotional conditions. The collection and analysis may be performed using a uniquely designed sensing device that includes multiple sets of sensors configured to collect EEG, EOG, EMG, EDA, and/or PPG signals from the person's head and/or facial areas. The sensing device may include a multi-layered facepad and may be coupled to a VR/AR headset and/or a scalp engagement apparatus to monitor the person's physiological and/or neural reactions to audio/visual stimuli.

Biometric information about a person may be collected and analyzed to gain insight into the person's physical and/or emotional conditions. The collection and analysis may be performed using a uniquely designed sensing device that includes multiple sets of sensors configured to collect EEG, EOG, EMG, EDA, and/or PPG signals from the person's head and/or facial areas. The sensing device may include a multi-layered facepad and may be coupled to a VR/AR headset and/or a scalp engagement apparatus to monitor the person's physiological and/or neural reactions to audio/visual stimuli.