EEG ANALYSIS SYSTEM

EEG ANALYSIS SYSTEM: an expert system was developed for the automated detection of spikes and sharp waves in the EEG for the detection of epileptiform activity.

The system consists of two distinct stages. The first is a feature extractor,written in the conventional procedural language Fortran, which uses part of previously published spike-detection algorithms to produce a list of all spike-like occurrences in the EEG. The second stage, written in OPS5, reads the listand uses rules incorporating knowledge elicited from an electroencephalographer (EEGer) to confirm or exclude each of the possible spikes. Information such as the time of occurrence, polarity, and channel relationship is used in this process. A summary of the detected epileptiform events is produced, which is available to the EEGer in interpreting the EEG.

The system was developed at the Dev.Med. Physics and Bioengineering, Christchurch Hosp., Private Bag, Christchurch,New Zealand.

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Davey, B., et at., Expert system approach to detection of epileptiform activity in the EEG, Medical & Biological Engineering & Computing, vol.27, no,4, pp.365-310, 1989.