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TRIGGERED SKIN-ELECTRODE IMPEDANCE MONITORING DURING LONG-TERM ELECTROENCEPHALOGRAPHY MEASUREMENT

IP.com Disclosure Number: IPCOM000237055D
Publication Date: 2014-May-29
Document File: 3 page(s) / 153K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention provides a technique to perform electrode-skin impedance measurement in an EEG device. The technique utilizes output signal of a piezo sensor as a trigger for electrode-skin impedance measurement in intensive care unit (ICU) or operation rooms. The invention allows a user to check whether patient head movement has affected signal quality or not. The technique performs the impedance measurement in response to the patient movement, which occur during long-term EEG measurement. In case of movement, the impedance measurement is performed to check quality of electrode-skin and/or electrode-lead wire connection.

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TRIGGERED SKIN-ELECTRODE IMPEDANCE MONITORING DURING LONG-TERM ELECTROENCEPHALOGRAPHY MEASUREMENT

FIELD OF INVENTION

The invention generally relates to an electrocephalography (EEG) system and more particularly to a technique for monitoring impedance in a long –term EEG system.

BACKGROUND OF THE INVENTION


Every bio-potential signal acquisition system, such as, electrocephalography (EEG), electromyography (EMG), and electrocardiography (ECG), among others requires to check connectivity of both lead wires and electrodes attached to a patient. As a result, there is requirement for regular monitoring of impedance of connection. Monitoring is performed in different ways and with different time interval. The main cause of inefficient connection between bio-potential electrode and patient skin is patient body movement. Loose connection between the electrode and the skin affects signal quality. Development of a system to detect movement is utilized to check connectivity of the connection after electrode movement.

A conventional technique includes electrode-skin impedance measurement in the EEG system. However, the technique does not monitor impedance measurement.

Hence there exists a need for an efficient technique to monitor impedance measurement in the EEG system.

BRIEF DESCRIPTION OF THE INVENTION

The invention provides a technique to perform an electrode-skin impedance measurement in an EEG device. The technique utilizes output signal of a piezo sensor as a trigger for electrode-skin impedance measurement in intensive care unit (ICU) or operation rooms. The invention allows a user to check whether a patient head movement has affected signal quality or not. The technique performs the impedance measurement in response to the patient movement, which occur during long-term EEG measurement.

DETAILED DESCRIPTION OF THE INVENTION

The invention provides a technique to perform an electrode-skin impedance measurement in an EEG device. The technique utilizes output signal of a piezo sensor as a trigger for electrode-skin impedance measurement in intensive care unit (ICU) or operation rooms. The invention allows a user to check whether a patient head movement has affected signal quality or not. The technique performs the impedance measurement...