US4932416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the analysis, display and classification of event related potentials by interpretation of P3 responses
Assignee: Northwestern University
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Filing: 1987-05-01
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Granted: 1990-06-12
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Expires: 2007-05-01
Abstract
Abstract A method for recording and analyzing event-related potentials (ERP), and their respective P300 brain wave responses from a repeatedly presented guilty knowledge or control question stimulus interspersed with non-significant stimuli. A computer is utilized to interpret and analyze the responses for guilty knowledge and control question procedures.
Inventors
- 👤 Joel P. Rosenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:13
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/16; A61B5/164; A61B5/24; A61B5/316; A61B5/369; A61B5/377; A61B5/72; A61B5/7235; A61B5/7264
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A method of determining the cognitive response to personally meaningful information of a subject to a repeatedly presented significant guilty knowledge stimulus or stimuli interspersed with nonsignificant stimuli comprising: (a) providing a source of stipulation to the subject, including said guilty knowledge and said nonsignificant stimuli; (b) providing detection means for detecting event related potentials; (c) translating event related potentials to P300 brain waves; (d) obtaining P300 brain wave activity; and (e) analyzing said P300 brain wave activity for guilty knowledge detection.
Claim 2
Independent Claim
82 words
A method of determining the cognitive response to personally meaningful information of a subject to a repeatedly presented significant guilty knowledge stimulus or stimuli interspersed with nonsignificant stimuli comprising: (a) providing a source of stipulation to the subject, including said guilty knowledge and said nonsignificant stimuli; (b) providing detection means for detecting event related potentials; (c) translating event related potentials to P300 brain waves; (d) obtaining P300 brain wave activity; and (e) analyzing said P300 brain wave activity for guilty knowledge detection.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the event related potentials are detected, translated into P300 brain waves and analyzed by a computer.
Claim 4
Independent Claim
82 words
A method of determining the cognitive response to personally meaningful information of a subject to a repeatedly presented significant control question stimulus or stimuli interspersed with non-significant stimuli comprising: (a) providing a source of stimulation to the subject, including said guilty knowledge and said nonsignificant stimuli; (b) providing detection means for detecting event related potentials; (c) translating event related potentials to P300 brain waves; (d) obtaining P300 brain have activity; and (e) analyzing said P300 brain wave activity for control question testing.
Claim 5
Independent Claim
82 words
A method of determining the cognitive response to personally meaningful information of a subject to a repeatedly presented significant control question stimulus or stimuli interspersed with non-significant stimuli comprising: (a) providing a source of stimulation to the subject, including said guilty knowledge and said nonsignificant stimuli; (b) providing detection means for detecting event related potentials; (c) translating event related potentials to P300 brain waves; (d) obtaining P300 brain have activity; and (e) analyzing said P300 brain wave activity for control question testing.
Claim 6
Dependent Claim
15 words
The method of claim 1 or 3 wherein the stimuli may be visual or auditory.
Claim 7
Dependent Claim
13 words
The method of claim 1 or 3 wherein the stimuli may be words.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |