The present invention relates to a physiological recording electrode, and, more particularly, to an EEG (electroencephalography) recording electrode that can be used without the need for numerous steps in preparing the subject's skin and the electrode itself. The invention further relates to a surface feature or penetrator with a size and shape which that will not bend or break, which limits the depth of application, and/or anchors the electrode or other device during normal application; and a packaging system comprising a well and electrolytic fluid for maintaining a coating of said electrolytic fluid on the surface feature or penetrator.

Electrode array for monitoring of physiological parameters and devices including or utilizing same, the electrode array including an active electrode configured to provide an electrical signal and at least two inactive electrodes configured to collect the electrical signal transferred from the active electrode, wherein each of the at least two inactive electrodes are positioned at a different predetermined distance from the active electrode.

A system for providing an electrical interface between a transducer and a transducer support device, the system comprising: a body mounted to the transducer support device, the body comprising an interface-to-transducer coupling region; a interface-to-electronics subsystem coupling region coupled to the body and contiguous with the interface-to-transducer coupling region, the system defining a fluid sealing region surrounding at least one of the interface-to-transducer and the interface-to-electronics subsystem coupling region; the system comprising an operation mode defining a sealed electrical pathway between the transducer and the transducer support device, wherein: the fluid sealing region is coupled to a complementary transducer sealing region, and the elastically deformable coupling region is biased against an electrical contact of the transducer with the fluid sealing region preventing fluid from reaching the electrical contact of the transducer.

A system for providing an electrical interface between a transducer and a transducer support device, the system comprising: a body mounted to the transducer support device, the body comprising an interface-to-transducer coupling region; a interface-to-electronics subsystem coupling region coupled to the body and contiguous with the interface-to-transducer coupling region, the system defining a fluid sealing region surrounding at least one of the interface-to-transducer and the interface-to-electronics subsystem coupling region; the system comprising an operation mode defining a sealed electrical pathway between the transducer and the transducer support device, wherein: the fluid sealing region is coupled to a complementary transducer sealing region, and the elastically deformable coupling region is biased against an electrical contact of the transducer with the fluid sealing region preventing fluid from reaching the electrical contact of the transducer.

A wearable computing device with bio-signal sensors and a feedback module provides an interactive mediated reality (“VR”) environment for a user. The bio-signal sensors receive bio-signal data (for example, brainwaves) from the user and include bio-signal sensors embedded in a display isolator, having a deformable surface, and having an electrode extendable to contact the user's skin. The wearable computing device further includes a processor to: present content in the VR environment via the feedback module; receive bio-signal data of the user from the bio-signal sensor; process the bio-signal data to determine user states of the user, including brain states, using a user profile; modify a parameter of the content in the VR environment in response to the user states of the user. The user receives feedback indicating the modification of the content via the feedback module.

In some embodiments, a display system comprising a head-mountable, augmented reality display is configured to perform a neurological analysis and to provide a perception aid based on an environmental trigger associated with the neurological condition. Performing the neurological analysis may include determining a reaction to a stimulus by receiving data from the one or more inwardly-directed sensors; and identifying a neurological condition associated with the reaction. In some embodiments, the perception aid may include a reminder, an alert, or virtual content that changes a property, e.g. a color, of a real object. The augmented reality display may be configured to display virtual content by outputting light with variable wavefront divergence, and to provide an accommodation-vergence mismatch of less than 0.5 diopters, including less than 0.25 diopters.

A method of monitoring the status of a body of a person during sleep, said method comprising:—retaining in or adjacent the mouth or nose of said person an electronic detector which detects indications of the state of said body,—wirelessly transmitting a first data stream representing said indications to a data receiving means,—transmitting said first data stream from said data receiving means to a data processing means,—processing said first data stream within said data processing means to produce a second data stream representing said indications, or conclusion drawn from said indications, and—displaying a visual representation of said indications or conclusions.

A blink detection apparatus includes an eyelid state index value measurement unit configured to chronologically measure an eyelid state index value, and a signal processing device. The signal processing device is configured to determine that a blink occurs when a change width of the measured eyelid state index value from a baseline that is a reference value of the eyelid state index value in a case where eyelids are in an opened state exceeds a magnitude of a threshold from the baseline, to count the number of times when the change width of the measured eyelid state index value from the baseline exceeds the magnitude of a tentative threshold from the baseline, and to set the threshold to a tentative threshold at which change in the number of times with respect to the tentative threshold is minimal.

A blink detection apparatus includes an eyelid state index value measurement unit configured to chronologically measure an eyelid state index value, and a signal processing device. The signal processing device is configured to determine that a blink occurs when a change width of the measured eyelid state index value from a baseline that is a reference value of the eyelid state index value in a case where eyelids are in an opened state exceeds a magnitude of a threshold from the baseline, to count the number of times when the change width of the measured eyelid state index value from the baseline exceeds the magnitude of a tentative threshold from the baseline, and to set the threshold to a tentative threshold at which change in the number of times with respect to the tentative threshold is minimal.

An apparatus and method for non-invasive determination of airway resistance for the detection of pulmonary airway disease includes providing an apparatus and method wherein changes in a pulsatile blood pressure waveform are detected by PhotoPlethysmoGram (PPG) or Ballistography (BSG) and are automatically determined to reflect decreases in airflow and changes in airway resistance.