Disclosed examples include those directed to detecting and remediating detachment of electrodes from a patient. In an example, a system calculates a Pearson correlation coefficient between: (1) power spectral density of the noise and (2) power spectral density of a recorded signal (e.g., from an electrode being operated in free-run EMG mode). If the recorded signal correlates with the noise, then the system notifies the user of presence of noise (e.g., the fallen electrode). Otherwise, the recorded signal is considered as the signal of interest (e.g., a valid EMG signal).

The present disclosure relates to a wearable sensor device (10) for arrangement to a skin surface of a subject. The wearable sensor device (10) comprises a base structure (1) which, when the wearable sensor device is arranged to a skin surface of a subject, provides a proximal skin facing surface (7) proximal to the skin surface and a distal skin facing surface (8) distal to the skin surface; one or more electrodes (2a, 2b, 2c, 2d) arranged on a proximal skin facing surface (7) of the base structure (1) and configured to provide an electrical signal containing information of the subject; an electronics module (3) configured to process the electrical signal provided by the one or more electrodes (2a, 2b, 2c, 2d), and electrically conductive tracks (2) electrically connecting said one or more electrodes (2a, 2b, 2c, 2d) to the electronics module (3), wherein the electronics module (3) is arranged on the distal skin facing surface of the base structure (1). A method of manufacturing the wearable sensor device (10) is also provided.

The present disclosure relates to a wearable sensor device (10) for arrangement to a skin surface of a subject. The wearable sensor device (10) comprises a base structure (1) which, when the wearable sensor device is arranged to a skin surface of a subject, provides a proximal skin facing surface (7) proximal to the skin surface and a distal skin facing surface (8) distal to the skin surface; one or more electrodes (2a, 2b, 2c, 2d) arranged on a proximal skin facing surface (7) of the base structure (1) and configured to provide an electrical signal containing information of the subject; an electronics module (3) configured to process the electrical signal provided by the one or more electrodes (2a, 2b, 2c, 2d), and electrically conductive tracks (2) electrically connecting said one or more electrodes (2a, 2b, 2c, 2d) to the electronics module (3), wherein the electronics module (3) is arranged on the distal skin facing surface of the base structure (1). A method of manufacturing the wearable sensor device (10) is also provided.

A water resistant biometric data logging system for an animal including a housing containing an electrophysiological data logging device and an underwater connector configured to route and waterproof at least 10 electrode cables to the electrophysiological data logging device. Further disclosed is an apparatus (e.g., headcap) for mounting electrodes onto the animal. The apparatus includes a first layer comprising a first plurality of openings or holes, the first layer comprising a foam or a sacrificial material; a second layer comprising a second plurality of openings or holes, the second layer comprising or consisting essentially of synthetic rubber; and a potted piece containing a plurality of electrode cables, wherein the electrode cables are routed from the potted piece through the first plurality of openings and the second plurality of openings or holes.

A biological sensor that is to be affixed to a living body and is for acquiring a biological signal includes a cover member; and a porous substrate having a porous structure, the porous substrate being disposed on the cover member on a side of the living body. A sticking layer, including the porous substrate and a first adhesive layer that is disposed on the porous substrate on a side of the living body, exhibits a shear stress of from 5×10.sup.4 N/m.sup.2 to 65×10.sup.4 N/m.sup.2 when the sticking layer is deformed in a direction perpendicular to a thickness direction of the sticking layer by 5% to 15% of a length of the sticking layer. A moisture permeability of the sticking layer is within a range from 65 g/m.sup.2.Math.day to 4000 g/m.sup.2.Math.day.

A biological sensor that is to be affixed to a living body and is for acquiring a biological signal includes a cover member; and a porous substrate having a porous structure, the porous substrate being disposed on the cover member on a side of the living body. A sticking layer, including the porous substrate and a first adhesive layer that is disposed on the porous substrate on a side of the living body, exhibits a shear stress of from 5×10.sup.4 N/m.sup.2 to 65×10.sup.4 N/m.sup.2 when the sticking layer is deformed in a direction perpendicular to a thickness direction of the sticking layer by 5% to 15% of a length of the sticking layer. A moisture permeability of the sticking layer is within a range from 65 g/m.sup.2.Math.day to 4000 g/m.sup.2.Math.day.

A biosensor, which operates by power supplied from a battery, includes an electrode portion positioned on at least a side of one terminal of the battery; and a conductive adhesive tape having conductivity provided between the one terminal and the electrode portion. A fluctuation width of a resistance value of the conductive adhesive tape is 1.60Ω or less in absolute value when an iron ball having a weight of 33 g is dropped vertically from a height of 30 cm to apply a load to a surface of the conductive adhesive tape.

A biosensor, which operates by power supplied from a battery, includes an electrode portion positioned on at least a side of one terminal of the battery; and a conductive adhesive tape having conductivity provided between the one terminal and the electrode portion. A fluctuation width of a resistance value of the conductive adhesive tape is 1.60Ω or less in absolute value when an iron ball having a weight of 33 g is dropped vertically from a height of 30 cm to apply a load to a surface of the conductive adhesive tape.

Broadly speaking, embodiments of the present techniques provide a skin-conformable and compact wearable electronic apparatus for monitoring physiological and/or brain signals of the wearer.

Broadly speaking, embodiments of the present techniques provide a skin-conformable and compact wearable electronic apparatus for monitoring physiological and/or brain signals of the wearer.