Method and system of detecting seizures

A system for determining the dynamics of seizures, such as tonic-clonic seizures, the system comprising:

• a portable electromyography sensor unit including surface electrodes;
• at least one processor unit capable of recording an electromyography signal from said portable electromyography sensor unit, the at least one processor unit including a filter module, a first analysis module, a second analysis module, and a time-point extraction module;
• the filter module configured to select each of a first frequency band and a second frequency band, the bandwidth of the first frequency band selected to collect muscle related signals in the tonic phase of a generalized tonic-clonic seizure, the bandwidth of the second frequency band selected to collect muscle related signals in the clonic phase of a generalized tonic-clonic seizure;
• said first analysis module configured to analyze the recorded electromyography signal within said first frequency band over a range of 32-512 Hz to provide a first output signal, and said second analysis module configured to analyze the recorded electromyography signal within said second frequency band over a range of 2-16 Hz to provide a second output signal;
• said time point extraction configured to compare one of the first or the second output signals to a threshold value and to determine a starting point of a seizure event phase in a detected seizure based on the threshold value.

A method of analyzing the dynamics of seizures, such as tonic-clonic seizures, comprising:

• measuring an electromyography signal using a portable electromyography sensor unit, including surface electrodes;
• recording said electromyography signal from said portable electromyography sensor unit using at least one processor unit, the at least one processor unit including a filter module, a first analysis module, a second analysis module, and a time-point extraction module;
• wherein the electromyography signal is filtered using said filter module to select each of a first frequency band and a second frequency band, the bandwidth of the first frequency band selected to collect muscle related signals in the tonic phase of a generalized tonic-clonic seizure, the bandwidth of the second frequency band selected to collect muscle related signals in the clonic phase of a generalized tonic-clonic seizure;
• analyzing the electromyography signal using said first analysis module and said second analysis module, said first analysis module analyzing the electromyography signal within said first frequency band over a range of 32-512 Hz to provide a first output signal, and said second analysis module analyzing the electromyography signal within said second frequency band over a range of 2-16 Hz to provide a second output signal;
• and
• comparing one of the first or the second output signals to a threshold value to determine a starting point of a seizure event phase in a detected seizure based on said threshold value using said time-point extraction module.