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1. WO2019040981 - A SYSTEM, METHOD, COMPUTER PROGRAM AND COMPUTER INTERFACE FOR ANALYSING ELECTROENCEPHALOGRAPHIC INFORMATION

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[ EN ]

Claims

1. A computer enabled method for analysing an electroencephalographic (EEG) waveform to detect the presence of a waveform indicative of an epileptic seizure, comprising the steps of, performing a time frequency analysis of the EEG waveform utilising a moving window to perform the analysis on a segment, calculating a power spectrum value of the analysed segment of the waveform to derive an index value, wherein the index value is utilised to determine the presence of a seizure.

2. A method in accordance with claim 1, further comprising the step of iterating the process steps of claim 1 to provide a plurality of index values for different time windows, wherein each of the plurality of index values is utilised to detect a seizure.

3. A method in accordance with claim 2, comprising the step of sorting the plurality of index values into a histogram, wherein the resultant histogram is analysed to define a background level of activity, wherein the background level of activity defines a threshold value utilised to remove background activity.

4. A method in accordance with claim 3, further comprising the step of providing an interface to allow a user to review the histogram and selectively reset the threshold value.

5. A method in accordance with claim 4, further comprising the step of autonomously reviewing the selective resets of the threshold value by a user, and varying the predetermined threshold value on the basis of the selective resets.

6. A method in accordance with any one of the preceding claims, further comprising the step of analysing the EEG waveform only within a defined frequency band.

7. A method in accordance with any one of the preceding claims, wherein the defined frequency band for rats extends from 17 to 25 Hz, and the defined frequency band for mice extends from 14 to 27 Hz.

8. A method in accordance with any one of the preceding claims, wherein the method may be optimised for the detection of epileptic seizures in rats and mice.

9. A system for analysing an electroencephalographic (EEG) waveform to detect the presence of an activity pattern indicative of an epileptic seizure, comprising, a module arranged to utilise a processor to perform a time frequency analysis of the EEG waveform utilising a moving window to perform the analysis on a segment, the module calculating a power spectrum value of the analysed segment of the waveform to derive an index value, and utilising the index value to determine the presence of a seizure pattern in the waveform, wherein the presence of a seizure pattern is communicated to a user via an interface.

10. A computer program incorporating at least one instruction and arranged to, when executed on a computing system, perform the method steps of the first aspect of the invention.