SYSTEM AND METHOD FOR DETECTING AN EPILEPTIC SEIZURE IN A PRONE EPILEPTIC PERSON
First Claim
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1. A system for detecting an epileptic seizure in a prone person comprising:
- at least one motion sensor sensibly fastened to said person with at least one measurement axis;
a first determination module for determining a first probability of at least a first state transition diagram of the nocturnal activity of a prone person with respect to data representing the measurement signals of the motion sensor, said first diagram comprising predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said first diagram being predetermined;
a second determination module for determining a second probability of at least a second state transition diagram for an epileptic seizure with respect to data representing the measurement signals of the motion sensor, said second diagram comprising predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said second diagram being predetermined;
an association module for associating a state of said person as a function of the probabilities of the measurement signals of the motion sensor;
a first for calculation module for calculating the relations (φ
1, φ
1) between the first probability and the second probability; and
a detection module for detecting an epileptic seizure when at least one of said calculated relations (φ
1, φ
1) is below a threshold (λ
1, λ
2).
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Abstract
A system for detecting an epileptic seizure in a prone person, comprising:
- at least one motion sensor with at least one measurement axis having fastening means for securing said motion sensor to said person;
- first means for determining a first probability of at least a first state transition diagram of the nocturnal activity of a prone person with respect to data representing the measurement signals of the motion sensor, said first diagram comprising predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said first diagram being predetermined; and
- second means for determining a second probability of at least a second state transition diagram for an epileptic seizure with respect to data representing the measurement signals of the motion sensor, said second diagram comprising predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said second diagram being predetermined.
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Citations
16 Claims
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1. A system for detecting an epileptic seizure in a prone person comprising:
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at least one motion sensor sensibly fastened to said person with at least one measurement axis; a first determination module for determining a first probability of at least a first state transition diagram of the nocturnal activity of a prone person with respect to data representing the measurement signals of the motion sensor, said first diagram comprising predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said first diagram being predetermined; a second determination module for determining a second probability of at least a second state transition diagram for an epileptic seizure with respect to data representing the measurement signals of the motion sensor, said second diagram comprising predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said second diagram being predetermined; an association module for associating a state of said person as a function of the probabilities of the measurement signals of the motion sensor; a first for calculation module for calculating the relations (φ
1, φ
1) between the first probability and the second probability; anda detection module for detecting an epileptic seizure when at least one of said calculated relations (φ
1, φ
1) is below a threshold (λ
1, λ
2). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for detecting an epileptic seizure in a prone person, wherein:
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a first probability of at least a first state transition diagram of the nocturnal activity of a prone person is determined, with respect to the measurement signals of a motion sensor sensibly fastened to said person with at least one measurement axis, said first diagram comprising predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said first diagram being predetermined; a second probability of at least a second state transition diagram for an epileptic seizure is determined, with respect to the measurement signals of the motion sensor, where said second diagram comprises predetermined probabilities of oriented transitions between two different or identical states, the probabilities of the states of said second diagram being predetermined; a state of said person is associated as a function of the probabilities of the measurement signals of the motion sensor; relations (φ
1, φ
1) of the first probability and the second probability are calculated; andan epileptic seizure is detected when at least one of said calculated relations (φ
1, φ
1) is below a threshold (λ
1, λ
2).
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Specification