Abstract

On the basis of routine EEG, this article used mapping technologies to conduct research on the brain electrical activities of mentally retarded children in high-fluoride regions. Results showed that the O energy percentages in the central, parietal, occipital, and left temporal areas of the mentally retarded group were significantly higher than those of the normal control group. The a energy percentages in the central and occipital areas were significantly lower than those of the control group. These abnormal changes in brain electrical activities were closely related to the high-fluoride environment. The degree of damage of fluoride to brain functions can be intuitively and visually understood via brain mapping

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