SYSTEM AND METHOD FOR AUTOMATICALLY ADJUSTING DETECTION THRESHOLDS IN A FEEDBACK-CONTROLLED NEUROLOGICAL EVENT DETECTOR
First Claim
1. A method for approximating a target detection rate for a neurological event with a neurological event detector intended for use with a human patient, comprising:
- identifying a target detection rate for the neurological event;
monitoring electrographic signals incident on the neurological event detector;
comparing each electrographic signal to a threshold value for a parameter the variation of which has a predictable effect on a detection rate of the neurological event;
measuring a rate at which the electrographic signals exceed the threshold value to determine a measured detection rate;
comparing the measured detection rate to the target detection rate; and
adjusting the threshold value to minimize a difference between the measured detection rate and the target detection rate.
3 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for detecting neurological events and approximating a target detection rate are disclosed. A target detection rate may be identified for the neurological event. Electrographic signals incident on a neurological event detector may be monitored. Each signal may be compared to a threshold value for a parameter. As the threshold value varies, it has a predictable effect on a detection rate of the neurological event. A rate at which the electrographic signals exceed the threshold value may be measured and compared to the target detection rate. The threshold value may be adjusted to minimize the difference between the measured detection rate and the target detection rate.
-
Citations
25 Claims
-
1. A method for approximating a target detection rate for a neurological event with a neurological event detector intended for use with a human patient, comprising:
-
identifying a target detection rate for the neurological event; monitoring electrographic signals incident on the neurological event detector; comparing each electrographic signal to a threshold value for a parameter the variation of which has a predictable effect on a detection rate of the neurological event; measuring a rate at which the electrographic signals exceed the threshold value to determine a measured detection rate; comparing the measured detection rate to the target detection rate; and adjusting the threshold value to minimize a difference between the measured detection rate and the target detection rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. In a neurological event detector intended for use with a human patient, a method for minimizing the difference between a target detection rate and a measured detection rate for a neurological event, comprising:
-
identifying a target detection rate for the neurological event; monitoring electrographic signals sensed from the human patient by the neurological event detector; comparing each electrographic signal to a threshold value for a parameter the variation of which has a known relationship to a sensitivity of the neurological event detector to register a detection of the neurological event; measuring a rate at which the electrographic signals exceed the threshold value to determine a measured detection rate; comparing the measured detection rate to the target detection rate; and adjusting the threshold value to minimize a difference between the measured detection rate and the target detection rate. - View Dependent Claims (16, 17)
-
-
18. A neurological event detector intended for use with a human patient to detect a neurological event, comprising:
-
at least one sensor for receiving electrographic signals from the human patient; a detector for analyzing the electrographic signals to identify an occurrence of the neurological event whenever a threshold value for a parameter is exceeded, wherein variation of the parameter has a predictable effect on a detection rate of the neurological event, wherein an output of the detector is a measured detection rate; a memory in which a target detection rate is storable and from which the target detection rate is accessible; a comparator for comparing the measured detection rate to the target detection rate; and a parameter adjuster for adjusting the threshold value to minimize a difference between the measured detection rate and the target detection rate. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
-
Specification