Disclosed herein are methods, systems, apparatuses, and media for sensing neuromuscular signals. In one example, a device for sensing neuromuscular signals comprises a wearable structure. The device includes a plurality of signal electrodes aligned along an interior portion of the wearable structure, each signal electrode configured to detect neuromuscular signals. The device further includes a plurality of amplifiers corresponding to the plurality of signal electrodes, wherein an amplifier has: a first input operatively coupled to a corresponding signal electrode; a second input; and an output corresponding to a neuromuscular signal channel. The device further includes circuitry configured to generate a common mode reference signal directly or indirectly based on signals from one or more electrodes, wherein the second input of each amplifier of the plurality of amplifiers is configured to receive the common mode reference signal or a signal based on the common mode reference signal.

Disclosed is a reconfigurable amplifier and an amplification method thereof, the amplifier includes an input selector, a first amplifying circuit, and a second amplifying circuit. The input selector is configured to select one of a voltage input and a current input based on a voltage measurement mode and a current measurement mode. The first amplifying circuit includes a first load element, and is configured to apply a voltage corresponding to the voltage input to the first load element in the voltage measurement mode and receive the current input in the current measurement mode and block a current flowing through the first load element. The second amplifying circuit is configured to mirror a current flowing through the first amplifying circuit in response to one of the voltage input and the current input and generate an output voltage based on the mirrored current.

A physiological signal monitoring system includes a single set of sensing electrodes to provide conditioned physiological signals to a primary monitoring device and a secondary monitoring device. The monitoring system includes pre-processing circuitry configured to receive a raw physiological signal. The pre-processing circuitry is configured to produce a primary physiological signal and a secondary physiological signal. Each of the primary and secondary physiological signals are conditioned. The primary conditioned physiological signal is directed to a primary monitoring device such as a hospital wearable defibrillator device. The secondary conditioned physiological signal is directed to telemetry modeling circuitry where it is further processed to output one or more telemetry signals. The one or more telemetry signals are output to a secondary monitoring device such as a three lead ECG monitoring device. Thus, a single set of sensing electrodes can provide physiological signals to multiple monitoring devices.

A sensor array includes a base for providing a probe signal and a plurality of modular recording sites. Each modular recording site of the plurality of modular recording sites is configured for receiving a signal, for converting the signal into a digital sensor signal and to provide the digital sensor signal to the base. The base is configured for receiving a plurality of digital sensor signals from the plurality of modular recording sites and to process the plurality of digital sensor signals so as to provide the probe signal.

Capacitive ECG sensing electronic displays and related methods are disclosed herein. An example electronic device disclosed herein includes a display screen including a first electrode and a second electrode and a processor operatively coupled to the display screen. The processor is to cause the display screen to operate in a first display screen mode to detect a touch input from a user on the display screen. The processor is to cause the display screen to switch from operating in the first display screen mode to operating in a second display screen mode. The first electrode and the second electrode are to generate signal data indicative of electrocardiogram data for the user when the display screen is operating in the second display screen mode.

Hat, helmet, and other headgear apparatus includes dry electrophysiological electrodes and, optionally, other physiological and/or environmental sensors to measure signals such as ECG from the head of a subject. Methods of use of such apparatus to provide fitness, health, or other measured or derived, estimated, or predicted metrics are also disclosed.

A noised-reduced capacitive image sensor and a method operating the capacitive image sensor are provided. The capacitive image sensor includes: a number of capacitive sensing units forming an array, each capacitive sensing unit for transforming a distance between a portion of a surface of an approaching finger and a top surface thereof into an output electric potential, wherein a value of the output electric potential is changed by a driving signal applied to the sensing unit; at least one sample-and-hold circuit for capturing and retaining different output electric potentials; at least one signal conditioning circuit, each comprising at least one differential amplifier for amplifying a difference between two electric potentials retained by the sample-and-hold circuit; and a driving source, for providing the driving signal to the capacitive sensing units.

An electrical activity monitoring system that includes an sensor sub-system having first and second capacitive electrodes that are configured to electrically couple to a subject's skin and detect electrical signals of a subject, a conductive layer is configured to couple to an anatomical region of the subject and generate an anatomical reference signal, a control module that is programmed to control the sensor sub-system and determine physiological characteristics as a function of signals transmitted from the sensor sub-system.

The invention relates to a treatment bed for supporting patients in a sitting and/or lying manner for the duration of a treatment and/or diagnosis. The treatment bed has a support surface which consists of one or more segments and on which the patient is supported during the treatment and/or diagnosis. Multiple capacitive measuring electrodes for the contactless capacitive detection of EKG signals of a patient supported on the support surface are arranged in at least one segment of the support surface on the surface side closer to the patient. The treatment bed further has at least one electronic signal processing system which is connected to the measuring electrodes and is designed to process signals, in particular to amplify signals, of the electric signals of the measuring electrodes. In addition to the measuring electrodes, the treatment bed also has at least one injection electrode which is designed to teed injection signals into one or more of the measuring electrodes via the patient supported on the support surface. The electronic signal processing system is additionally designed to determine the quality of the capacitive coupling of one or more or all of the measuring electrodes to the patient by means of the signals received via the measuring electrodes using the signal components which are contained in the signals and originate from the injection signals.

A patient monitoring system includes a capacitive electrode connectable to a patient to detect an output signal and a signal generator unit that transmits a carrier signal to the capacitive electrode, the carrier signal having a carrier frequency and a carrier amplitude. The patient monitoring system further includes an amplifier unit that amplifies the output signal detected by the capacitive electrode to generate an amplified output signal. A gain determination module in the patient monitoring system determines an output amplitude of a carrier frequency portion of the amplified output signal, and determines a system gain based on a comparison between the output amplitude and the carrier amplitude. A voltage determination module in the patient monitoring system filters the output signal to isolate a physiological signal detected from the patient, and determines a voltage of the physiological signal based on the system gain.