Systems and methods for non-intrusive drug impairment detection
First Claim
1. A system, comprising:
- a sensing arrangement that collects eye movement data of a user;
an alerting arrangement that produces an perceptible alert in response to receipt of an alert signal; and
a control unit in electronic communication with the sensing arrangement and the alerting arrangement, the control unit comprising;
a data analysis module that configures the control unit to extract one or more current eye movement dynamics, including one or more intersaccadic drift velocities, from the eye movement data; and
a comparison module that configures the control unit to;
receive the one or more current eye movement dynamics from the data analysis module;
identify, by comparing the one or more current eye movement dynamics, including the one or more intersaccadic drift velocities, to one or more baseline eye movement dynamics accessible by the control unit, a neurologic impairment caused by an intoxicated state of the user; and
send the alert signal to the alerting arrangement in response to an identification of the neurologic impairment;
wherein the data analysis module is configured to calculate the one or more intersaccadic drift velocities; and
wherein the comparison module is configured to compare the one or more intersaccadic drift velocities to one or more threshold drift velocities of the one or more baseline eye movement dynamics.
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Accused Products
Abstract
Systems and methods for detecting onset, presence, and progression of particular states, including intoxication, include observing eye movements of a subject and correlating the observed movements to known baseline neurophysiological indicators of intoxication. A detection system may record eye movement data from a user, compare the eye movement data to a data model comprising threshold eye movement data samples, and from the comparison make a determination whether or not intoxication or impairment is present. The detection system may alert the user to take corrective action if onset or presence of a dangerous condition is detected. The eye movements detected include saccadic and intersaccadic parameters such as intersaccadic drift velocity. Measurements may be collected in situ with a field testing device. An interactive application may be provided on a user device to provoke the desired eye movements during recording.
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Citations
34 Claims
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1. A system, comprising:
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a sensing arrangement that collects eye movement data of a user; an alerting arrangement that produces an perceptible alert in response to receipt of an alert signal; and a control unit in electronic communication with the sensing arrangement and the alerting arrangement, the control unit comprising; a data analysis module that configures the control unit to extract one or more current eye movement dynamics, including one or more intersaccadic drift velocities, from the eye movement data; and a comparison module that configures the control unit to; receive the one or more current eye movement dynamics from the data analysis module; identify, by comparing the one or more current eye movement dynamics, including the one or more intersaccadic drift velocities, to one or more baseline eye movement dynamics accessible by the control unit, a neurologic impairment caused by an intoxicated state of the user; and send the alert signal to the alerting arrangement in response to an identification of the neurologic impairment; wherein the data analysis module is configured to calculate the one or more intersaccadic drift velocities; and wherein the comparison module is configured to compare the one or more intersaccadic drift velocities to one or more threshold drift velocities of the one or more baseline eye movement dynamics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 19, 21)
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15. A system, comprising:
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a sensing arrangement that collects eye movement data of a user; and a control unit in communication with the sensing arrangement, the control unit being configured to; compare the eye movement data, including a current intersaccadic drift velocity within the eye movement data, to one or more baseline measurements of eye movement dynamics to identify an intoxicated state of the user; and responsive to a result of the comparison indicating the presence of the intoxicated state, generate an alert for delivery to the user; wherein the control unit is configured to calculate the current intersaccadic drift velocity; and wherein the control unit is configured to compare the current intersaccadic drift velocity to one or more threshold drift velocities of the one or more baseline measurements. - View Dependent Claims (16, 17)
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18. A method of determining a physiological state of a user, the method comprising:
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recording, with a sensing arrangement, from the user eye movement data of one or both of the user'"'"'s eyes; comparing, with a control unit, the eye movement data to one or more baseline measurements corresponding to an intoxicated state, the comparing comprising; extracting one or more current eye movement dynamics, including one or more intersaccadic drift velocities, from user eye movement data; calculating the one or more intersaccadic drift velocities; and comparing the one or more intersaccadic drift velocities to one or more threshold drift velocities of the one or more baseline measurements; and if the one or more intersaccadic drift velocities diverge from one or more of the one or more threshold drift velocities by a threshold amount, delivering, by the control unit, an alert indicating the user is in the intoxicated state. - View Dependent Claims (20, 22, 23, 24, 25, 26, 27, 28)
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29. A system, comprising:
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a sensing arrangement that collects eye movement data of a user; and a control unit in communication with the sensing arrangement, the control unit being configured to; calculate, from the eye movement data, one or more intersaccadic drift velocities; compare the eye movement data, including the one or more intersaccadic drift velocities, to one or more baseline measurements of eye movement dynamics to identify an intoxicated state of the user; and compare the one or more intersaccadic drift velocities to one or more threshold drift velocities of the one or more baseline measurements of eye movement dynamics responsive to a result of comparison indicating a presence of the intoxicated state, generate an alert for delivery to the user. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification