Patent ID: 8655438

Claim:
An electroencephalography (EEG) monitoring device, comprising: at least one electrode; a non-linear analog signal processor configured to receive a signal from the at least one electrode and determine whether the signal is within a significant category, wherein a significant EEG event is within the significant category, the non-linear analog signal processor comprising: an independent component analyzer configured to provide blind source separation functionality at least in part by implementing an adaptation rule as a product of a sign of a first processed signal from a first electrode, a square of the first processed signal, and a hyperbolic tangent of a second processed signal; and a feature extractor for extracting representative statistical features of an EEG signal configured to indicate occurrence of a seizure event; a variable resolution analog-to-digital converter configured to convert signals received from the non-linear analog signal processor into high-resolution digital signals if the signals are within the significant category, and configured to convert signals received from the non-linear analog signal processor at a low resolution if the signals are not within the significant category; storage means configured to store high-resolution digital signals received from the variable resolution analog-to-digital converter; and a power source connected to, and providing power to, the non-linear analog signal processor, the variable resolution analog-to-digital converter, and the storage means.