US3826243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brainwave analysis and feedback method and apparatus
Assignee: Individual
•
Filing: 1972-07-10
•
Granted: 1974-07-30
•
Expires: 1992-07-10
Abstract
Abstract A method and apparatus for minimizing spurious responses in brainwave analysis and feedback instruments. A plurality of Fourier amplitude coefficients of the incoming brainwave signals are determined, and these coefficients are appropriately combined to be representative of certain brainwave states and to suppress noise signals that have a relatively wide bandwidth.
Inventors
- 👤 W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:35
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/72; A61B5/7235; A61B5/7253; A61B5/7257; A61B5/24; A61B5/316; A61B5/369; A61B5/372; A61B5/374; A61B5/7225
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
58 words
The method of analyzing the brain wave signal of an animal comprising the steps of: a. sensing said brain wave signal, b. determining a plurality of Fourier amplitude coefficients of said brain wave signal, c. combining said Fourier amplitude coefficients to obtain a composite coefficient representative of a brain wave state, and d. indicating said brain wave state.
Claim 2
Independent Claim
58 words
The method of analyzing the brain wave signal of an animal comprising the steps of: a. sensing said brain wave signal, b. determining a plurality of Fourier amplitude coefficients of said brain wave signal, c. combining said Fourier amplitude coefficients to obtain a composite coefficient representative of a brain wave state, and d. indicating said brain wave state.
Claim 3
Dependent Claim
27 words
The method as claimed in claim 1 wherein the step of sensing comprises the steps of sensing said brain wave signals and amplifying said brain wave signals.
Claim 4
Dependent Claim
31 words
The method of claim 1 wherein the step of sensing said brain wave signals comprises the steps of sensing previous recorded brain wave signals and amplifying said recorded brain wave signals.
Claim 5
Dependent Claim
66 words
ThE method of claim 1 wherein said step of determining a plurality of Fourier amplitude coefficients comprises determining two Fourier amplitude coefficients and said step of combining said Fourier amplitude coefficients comprises multiplying one of said Fourier amplitude coefficients by a constant factor to obtain a resultant factor and adding said resultant factor to the other of said Fourier amplitude coefficient to obtain said composite coefficient.
Claim 6
Dependent Claim
12 words
The method of claim 4 wherein said constant factor is minus one.
Claim 7
Dependent Claim
25 words
The method of claim 1 wherein the step of indicating said brain wave state comprises generating an audio frequency sound responsive to said composite coefficient.
Claim 8
Dependent Claim
37 words
The method of claim 1 wherein the said step combining said Fourier amplitude coefficients to obtain a composite coefficient comprises the forming of a plurality of said composite coefficients, each representative of a certain brain wave state.
Claim 9
Dependent Claim
67 words
Apparatus for analyzing the brain wave signal of an animal comprising: a. means for sensing said brain wave signal, b. means for determining a plurality of Fourier amplitude coefficients from said brain wave signal, c. means for combining said Fourier amplitude coefficients to form a composite coefficient representative of a brain wave state, and d. means for indicating said brain wave state responsive to said composite coefficient.
Claim 10
Dependent Claim
67 words
Apparatus for analyzing the brain wave signal of an animal comprising: a. means for sensing said brain wave signal, b. means for determining a plurality of Fourier amplitude coefficients from said brain wave signal, c. means for combining said Fourier amplitude coefficients to form a composite coefficient representative of a brain wave state, and d. means for indicating said brain wave state responsive to said composite coefficient.
Claim 11
Dependent Claim
26 words
Apparatus according to claim 8 wherein the means for sensing comprises means for sensing said brain wave signal and means for amplifying said brain wave signal.
Claim 12
Dependent Claim
32 words
Apparatus according to claim 8 wherein said means for sensing said brain wave signal comprises means for sensing a previously recorded brain wave signal and means for amplifying said brain wave signal.
Claim 13
Dependent Claim
71 words
The apparatus of claim 8 wherein means for determining a plurality of FOurier amplitude coefficients comprises the means for determining two Fourier amplitude coefficients and means for combining said Fourier amplitude coefficients comprises means for multiplying one of said Fourier amplitude coefficients by a constant factor to obtain a resultant factor and means for adding said resultant factor to the other of said Fourier amplitude coefficient to obtain said composite coefficient.
Claim 14
Dependent Claim
12 words
The apparatus of claim 11 wherein said constant factor is minus one.
Claim 15
Dependent Claim
22 words
The apparatus of claim 8 wherein said means for indicating comprises an audio frequency sound generating means responsive to said composite coefficient.
Claim 16
Dependent Claim
74 words
The apparatus of claim 8 wherein said means for combining said Fourier amplitude coefficients to form a composite coefficient comprises a means for forming a plurality of composite coefficients, means for forming each of said composite coefficients including a separate combining means, each of said separate composite coefficients representative of a certain brain wave state, and said indicating means comprises means for providing plural indications, each indication representative of a certain brain wave state.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |