| 摘要 |
An EEG (electroencephalograph) system detects a patient's brain waves from electrodes pressed against the patient's scalp, amplifies the analog brain waves and converts them into digital signals. The digital brain waves are processed to reduce electrical interference, muscle artifact and other noise, and then compared on a statistical basis against the patient's self-norm and population norms derived from groups of normal and abnormal groups of patients under specified conditions. The results of the statistical analysis, on an almost real-time basis, are displayed on a CRT color monitor. Two alternative embodiments of displays are: (1) Sequential analyses of time segments, intensity modulated to reflect statistical significance, are displayed in eight areas corresponding to eight brain sectors using a moving window type of histogram, stacked from top to bottom in temporal sequence; (2) Lights are laid out on a control console in the form of a topographic head map and the color of the lights is coded to correspond with the results of statistical analysis.
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