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对７０名无神经系统阳性体征的缺碘儿童进行脑电图、脑电地形图和智商检测，并与３５名正常儿童对照，结果为缺碘组诱发慢波异常２６例，尖波１０例，两者均明显高于对照组（Ｐ＜０．０１），两颞及右中央的α_１或α_２功率值及智商值明显低于对照组（Ｐ＜０．０５）。此外，将７０名缺碘儿童平分为治疗组和安慰组，半年后复查发现治疗组上述异常慢波及α_１、α_２功率值恢复正常。
70 children with iodine deficiency without neurological signs were detected by EEG, EEG and IQ, and compared with 35 normal children. The results showed that the iodine deficiency group induced 26 cases of slow wave anomaly, 10 cases of spike wave, Both were significantly higher than those in the control group (P <0.01). The power and IQ of α_1 or α_2 in the two temporal and right centers were significantly lower than those in the control group (P <0.05). In addition, 70 children with iodine deficiency were equally divided into the treatment group and the placebo group. After six months of review, the abnormalities of the above-mentioned abnormalities were observed and the power values of α_1 and α_2 returned to normal in the treatment group.