A digital signal processing system for EEG frequency analysis.
This paper describes the digital signal processing work of a research project for studying children's cognitive processes by analyzing EEG signals during school-related tasks. The EEG being analyzed involves two homologous channels (left and right parietal area), and is recorded on magnetic tapes. The objective of the analysis is to determine if, by examining the alpha band of the ongoing EEG, different school tasks and correct vs incorrect responses can be detected. Analysis of alpha-band calls for the determination of signal power in the 7-12 Hz frequency band (adjusted for the age of the subjects) for each channel as well as correlation between the channels. A digital signal processing scheme implemented on an Apple II microcomputer was developed for such an analysis. The results obtained are discussed.
D000293:Adolescent; D000513:Alpha Rhythm; D002648:Child; D003071:Cognition / Q000502:physiology; D003201:Computers; D004569:Electroencephalography; D006801:Humans; D008297:Male; D008838:Microcomputers; D012984:Software