Device and method for sensing electrical activity in tissue
First Claim
Patent Images
1. A headset comprising:
- a sensor electrode structured to be placed on skin of a user at a first point, the sensor electrode structured to sense electrical activity in a tissue of the user and to produce a signal of interest, an undesired signal and noise;
a reference electrode structured to be placed on the skin of the user at a second point, the second point being spaced apart from the first point; and
an electronics module, the electronics module including;
a front end amplifier structured to (1) amplify the signal of interest and the undesired signal occurring in a first frequency range while (2) attenuating the noise occurring in a second frequency range, the sensor electrode electrically coupled to a first input of the amplifier and the reference electrode electrically coupled to a second input of the amplifier, an output of the amplifier electrically coupled to the second input of the amplifier via a parallel resistor and capacitor circuit;
a filter electrically coupled to the output of the amplifier and structured to receive an output signal from the amplifier containing the signal of interest and the undesired signal, the filter structured to isolate the signal of interest by attenuating the undesired signal; and
a processor programmed to receive the signal of interest from the filter for analysis.
10 Assignments
0 Petitions
Accused Products
Abstract
An exemplary embodiment providing one or more improvements includes apparatus and methods for sensing electrical activity in tissue of a person in a manner which is substantially limits or eliminates interference from noise in a surrounding environment.
191 Citations
20 Claims
-
1. A headset comprising:
-
a sensor electrode structured to be placed on skin of a user at a first point, the sensor electrode structured to sense electrical activity in a tissue of the user and to produce a signal of interest, an undesired signal and noise; a reference electrode structured to be placed on the skin of the user at a second point, the second point being spaced apart from the first point; and an electronics module, the electronics module including; a front end amplifier structured to (1) amplify the signal of interest and the undesired signal occurring in a first frequency range while (2) attenuating the noise occurring in a second frequency range, the sensor electrode electrically coupled to a first input of the amplifier and the reference electrode electrically coupled to a second input of the amplifier, an output of the amplifier electrically coupled to the second input of the amplifier via a parallel resistor and capacitor circuit; a filter electrically coupled to the output of the amplifier and structured to receive an output signal from the amplifier containing the signal of interest and the undesired signal, the filter structured to isolate the signal of interest by attenuating the undesired signal; and a processor programmed to receive the signal of interest from the filter for analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification