EEG Processing Software Design And Development

A wealth of brain information is provided in EEG signals. Some characteristic parameters can be extracted for representing different cerebral function states by careful analyses and processing. Electroencephalogram (EEG) has been widely used in neurophysiology researches and clinical disease diagnosis, because it is safe, painless, economical and convenient. EEG plays an important role in some aspects, for example, estimating on the human mental statements, diagnosing and treating brain and neurological diseases, monitoring the depth of anesthesia, analyzing sleep quality and stages, and so on.We have finish our research work by using the new technologies of electronic, computer, software engineering, image processing technology,and modern signal processing. The main research work of this dissertation has four parts as follows:First, the basic knowledge on EEG signals is summarized, that is, generation mechanism, data collection , analysis method and contents in frequency band are stated, the development history stages is reviewed, the significance of EEG is summed up, and in this research field the development status and trend in recent years at home and abroad are reviewed.Second, a lot of work and research projects and systematical work has been carried on. Base on the demand, the correlate function of analysis and treating to the EEG has been integrated, the design of the EEG processing system has been accomplished.Third, the application of Discrete Hartley Transform (DHT) to analyze brain signals has been studied. The design of the topographic map of EEG has finished. The utilizing of it in clinical diagnosis was introduced. The design of the compressed spectral array (CSA) of EEG, digital terrain maps and the spectrum histogram has been completed.Fourth, the EEG processing system mainframe software was debugged and the mistakes on the testing spot were corrected, so that it can be successfully put into use.At present, the system design has basically finished. A lot of practical tests have been carried out. The result is that various functions of the system and performance meet the design requirement and the system is in good condition.