Computer-aided drug-abuse detection
First Claim
1. Apparatus for the non-invasive determination whether or not a subject has ingested a particular suspected single drug, said apparatus comprising:
- (a) plural electodes adapted for placement in the temple region of the subject'"'"'s head, and ENG means connected to said electrodes for producing an electronystagmograph waveform for the subject;
(b) said ENG means including an amplifier and analog-to-digital converter means for converting said waveform into a digitally recorded waveform for digital processing;
(c) a digital computer with digital-storage means, wherein said storage means contains digitally stored reference data uniquely characterizing each of a plurality of waveform-component features for said single drug; and
(d) means coacting with said computer for comparing the subject'"'"'s digitally recorded waveform for possible correlation with the digitally stored reference data for each of said component features.
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Accused Products
Abstract
The invention contemplates computer-aided analysis of recorded electronystagmograph data for a subject who is suspected of drug ingestion. The reference base for the analysis is predetermined by first entering into computer storage digital data that are characteristic of each of a selected plurality of component features of time-varying fluctuations in electronystamograph waveforms for each of a plurality of different ingested drugs, wherein the selected component features exist within a standardized set of at-rest conditions of electronystagmograph measurements. The plurality of component features is selected such that each of the drugs is characteristically identifiable by the presence of its singular combination of said component features. The subject'"'"'s time-varying fluctuations in electronystagmograph waveforms are non-invasively measured and digitally recorded, for each of the at-rest conditions of the standardized set; and the subject'"'"'s digitally recorded waveform is compared with the digitally stored reference data for each of the component features to ascertain the existence vel non of any correlation therebetween, thereby enabling determination as to whether a particular drug-identifying combination of the component features exists.
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Citations
25 Claims
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1. Apparatus for the non-invasive determination whether or not a subject has ingested a particular suspected single drug, said apparatus comprising:
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(a) plural electodes adapted for placement in the temple region of the subject'"'"'s head, and ENG means connected to said electrodes for producing an electronystagmograph waveform for the subject; (b) said ENG means including an amplifier and analog-to-digital converter means for converting said waveform into a digitally recorded waveform for digital processing; (c) a digital computer with digital-storage means, wherein said storage means contains digitally stored reference data uniquely characterizing each of a plurality of waveform-component features for said single drug; and (d) means coacting with said computer for comparing the subject'"'"'s digitally recorded waveform for possible correlation with the digitally stored reference data for each of said component features.
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2. Apparatus for the non-invasive detection of drug ingestion by a subject, said apparatus comprising:
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(a) plural electrodes adapted for placement in the temple region of the subject'"'"'s head, and ENG means connected to said electrodes for producing an electronystagmograph waveform for the subject; (b) said ENG means including an amplifier and analog-to-digital converter means for converting said waveform into a digitally recorded waveform for digital processing; (c) a digital computer with digital-storage means, wherein said storage means contains stored reference data uniquely characterizing each of a plurality of waveform-component features for each of a plurality of different ingested drugs; (d) means coacting with said computer for comparing, for possible correlation, the subject'"'"'s digitally recorded waveform with the digitally stored reference data for each of said component features, whereby specific identification of one or more of said different drugs may be made from evaluation of one or more such correlations; and (e) means for indicating the drug or drugs for which such correlation is found. - View Dependent Claims (3, 4, 5, 6)
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7. A non-invasive method of using a digital computer to detect drug ingestion by a subject, said method comprising the steps of:
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(a) entering into computer storage digital reference data that are characteristic of each of a selected plurality of component features of time-varying fluctuations in an electronystagmograph waveform for each of a plurality of different ingested drugs, wherein the selected component features exist within a standardized set of at-rest conditions of electronystagmograph waveforms, the plurality of component features being selected such that each of the drugs is characteristically identifiable by the presence of its singular combination of said component features; (b) non-invasively measuring the subject'"'"'s waveform, by digitally recording time-varying fluctuations in the electronystagmograph waveform, for each of the at-rest conditions of said standardized set; and (c) comparing the subject'"'"'s digitally recorded waveform with the digitally stored reference data for each of said component features to ascertain whether there exists any correlation therebetween, thereby determining the presence or absence in the subject'"'"'s waveform of a particular drug-identifying combination of said component features. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification