Method and apparatus for measuring electro-physiological activity
First Claim
1. A method for measuring electro-physiological activity comprising:
- a) providing a life form having a bio-potential;
b) providing an electro-optic modulator;
c) providing light to said electro-optic modulator;
d) modulating said light in said electro-optic modulator with said bio-potential to produce a bio-potential modulated light wherein said modulating of said light in said electro-optic modulator with said bio-potential is carried out by capacitive coupling with said bio-potential; and
e) providing said bio-potential modulated light as a bio-potential modulated light output.
1 Assignment
0 Petitions
Accused Products
Abstract
An electro-optic modulator modulates light in response to a life-form bio-potential to provide a bio-potential modulated light output. Modulation can be carried out as a result of capacitive coupling with the bio-potential. Phase, polarization, and intensity light modulation can be used. The light output can then be converted to electronic form for further processing. An optical power splitter is used to split light into multiple portions that are converted to electrical form. A pilot tone is used to achieve high sensitivity and synchronize multiple electro-optic modulators while phase modulation can be used to reduce noise in the bio-potential signal. Low-coherent light may be used as the light source. A housing is provided that can be hermetically-sealed and provided with electro-magnetic shielding.
37 Citations
24 Claims
-
1. A method for measuring electro-physiological activity comprising:
-
a) providing a life form having a bio-potential; b) providing an electro-optic modulator; c) providing light to said electro-optic modulator; d) modulating said light in said electro-optic modulator with said bio-potential to produce a bio-potential modulated light wherein said modulating of said light in said electro-optic modulator with said bio-potential is carried out by capacitive coupling with said bio-potential; and e) providing said bio-potential modulated light as a bio-potential modulated light output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A method for measuring electro-physiological activity comprising:
-
a) providing a life form having a bio-potential; b) providing an electro-optic modulator; c) providing light to said electro-optic modulator; d) providing a pilot tone that is superimposed on said bio-potential; e) modulating said light in said electro-optic modulator with said bio-potential to produce a bio-potential modulated light; and f) providing said bio-potential modulated light as a bio-potential modulated light output.
-
-
23. A method for measuring electro-physiological activity comprising:
-
a) providing a life form having a bio-potential; b) providing an electro-optic modulator; c) providing light to said electro-optic modulator; d) modulating said light in said electro-optic modulator with said bio-potential to produce a bio-potential modulated light; e) providing said bio-potential modulated light as a bio-potential modulated light output; and f) said method further comprising at least one of the following steps; a) providing said light to said electro-optic modulator at an angle to vertical, and b) providing said bio-potential modulated light emerging from said electro-optic modulator at an angle to vertical.
-
-
24. A method for measuring electro-physiological activity comprising:
-
a) providing a life form having a bio-potential; b) providing an electro-optic modulator; c) providing light to said electro-optic modulator; d) providing said bio-potential to a bio-potential plate electrically connected to a shunting resistor wherein said bio-potential plate is used to modulate said light in said electro-optic modulator to produce a bio-potential modulated light; and e) providing said bio-potential modulated light as a bio-potential modulated light output.
-
Specification