This invention relates to devices and methods for measuring and/or recording electrical signals from a body, particularly to devices and methods for recording electrical signals from a body while inside a medical imaging device, such as magnetic field scanner, such as a magnetic resonance imaging (MRI) scanner, or a computerized tomography (CT) scanner, and more particularly to devices, such as headpieces with electrodes and conductive pathways, and methods for synthesis of conductive inks used to fabricate the devices, such as with inkjet printer technology. Inkjet compatible inks may be utilized that employ nanoparticle solutions or metalorganic decomposition to generate metallic depositions, such as of silver, without sintering or other secondary processing in predetermined, including customized, layouts.

An exercise feedback system determines sensor data quality of an athletic garment based on bioimpedance data. The athletic garment includes sensors that can generate physiological data and bioimpedance data. An athlete wears the athletic garment while exercising. If the sensors have a stable contact with the skin of the athlete, the sensors generate high quality physiological data. However, if the sensors have unstable or no contact with the skin of the athlete, the sensors generate low quality physiological data. The exercise feedback system uses the magnitude and/or variance of the bioimpedance data to determine whether the physiological data is high or low quality. If the physiological data is high quality, the exercise feedback system may generate and provide feedback based on the physiological data for display to the athlete. The exercise feedback system may also use the bioimpedance data to identify defects in the garment during quality assurance tests.

A method, apparatus and computer program product, the method comprising: obtaining a plurality of electrical signals obtained from a plurality of electrodes distally disposed on a catheter inserted into one or more chambers of a heart of a patient, wherein one or more electrical signals obtained from one or more electrodes of the plurality of electrodes obtains electrical activity in one or more locations within the heart; identifying one or more signals from the plurality of electrical signals as being emitted from one or more disconnected electrode, said identifying utilizing a correlation with a reference signal measured within the heart, wherein the reference signal is associated with a reference electrode; and generating a map of electrical activity within the heart based upon the plurality of electrical signals, excluding one or more electrical signals originating from the disconnected electrodes.

An implantable medical device includes a sensing module configured to receive a cardiac electrical signal via electrodes carried by a medical electrical lead coupled to the implantable medical device and a control module configured to detect a lead issue. The sensing module is configured to produce cardiac sensed event signals and spike detect signals. The control module is configured to determine event intervals defined by consecutive ones of the received cardiac sensed event signals and the received spike detect signals and identify one or more received spike detect signals as lead issue spikes based on at least one of the determined event intervals.

The present invention relates to an apparatus and a method for measuring muscular activity, in particular in relation to bruxism, and providing an electrical stimulation in response to the measured muscular activity through electrodes applied to the skin of an individual, wherein the quality of the connectivity of the electrodes to the skin is monitored and the electrical stimulation signal is changed based on said quality measurement.

An instrument that utilizes body contact electrodes evaluates the quality of the connections made between the electrodes and the body. An electrode contact quality evaluation circuit performs the quality evaluation, such as by determining contact impedances for the electrodes. The corresponding contact quality of each electrode is conveyed to the user.

A system and method for ECG electrode and leadwire connection integrity detection are provided herein. The system includes a plurality of electrodes wherein a uniform spectral energy signal is to be injected into a subset of electrodes of the plurality of electrodes. The system also includes a computing device. The computing device includes a display, and the computing device is communicably coupled to the plurality of electrodes. The computing device is configured to acquire input signals from an electrode and determine a frequency response from the electrode based on the input signal from the electrode. The computing device is also configured to determine impairments in the electrode and leadwire connection using the frequency response.

A biosignal detection apparatus includes: a sensor unit including a plurality of electrodes configured to obtain a biosignal; memory storing one or more instructions; and one or more processors configured to execute the one or more instructions to: determine a time during which arbitrary electrodes of the plurality of electrodes obtain the biosignal, determine a variability of the biosignal obtained by the arbitrary electrodes, and based on the time during which the arbitrary electrodes obtain the biosignal and the variability of the obtained biosignal satisfying a predetermined reference, determine an arrangement of the arbitrary electrodes and learn the arrangement of the arbitrary electrodes.

A biosignal detection apparatus includes: a sensor unit including a plurality of electrodes configured to obtain a biosignal; memory storing one or more instructions; and one or more processors configured to execute the one or more instructions to: determine a time during which arbitrary electrodes of the plurality of electrodes obtain the biosignal, determine a variability of the biosignal obtained by the arbitrary electrodes, and based on the time during which the arbitrary electrodes obtain the biosignal and the variability of the obtained biosignal satisfying a predetermined reference, determine an arrangement of the arbitrary electrodes and learn the arrangement of the arbitrary electrodes.

A wearable device is provided. The wearable device is used by being attached to a user's skin. The wearable device includes a main body unit having a housing and a substrate, the substrate being arranged inside the housing, an electrode unit including a sensing electrode connected to the main body unit, and a patch unit including one or more conductive members, the one or more conductive members being configured to electrically connect the electrode unit to the user's skin. The electrode unit includes a shielding layer that is not electrically connected to the main body unit. The shielding layer is conductive with a floating potential.