System and method for detecting an epileptic seizure in a prone epileptic person

摘要

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; andsecond 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.

主权项

1. A system for detecting an epileptic seizure in a prone person comprising:
at least one motion sensor configured to couple to a person, the at least one motion sensor having at least one measurement axis; and a computing device configured to perform steps comprising:
a first determination of a first probability of at least a first state transition diagram of nocturnal activity of a prone person with respect to data representing 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 of 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; associating a state of said person as a function of probabilities of the measurement signals of the motion sensor, said probabilities being calculated separately for high frequencies of the measurement signals above a first frequency threshold, and for low frequencies of the measurement signals below a second frequency threshold, the second frequency threshold being equal to or less than the first frequency threshold;
calculating relations between the first probability and the second probability; anddetecting an epileptic seizure when at least one of said calculated relations is below a threshold.