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ＮＩＨ孕鼠整个孕期暴露于１～１．２ｋＶ／ｍ和０．２～０．４μＴ电磁场强度的电热毯，每天５ｈ。使用定量组织化学和行为毒理学方法检测新生子代下丘脑儿茶酚胺（ＣＡ）含量及各种行为活动。结果显示，暴露组子代的ＣＡ含量不仅在出生后７天，而且在出生后４０天时也比对照组明显下降（Ｐ＜０．０１及Ｐ＜０．０５）。
NIH pregnant rats exposed throughout the pregnancy 1 ~ 1.2kV / m and 0.2 ~ 0.4μT electromagnetic field strength blankets, 5h per day. Quantitative histochemical and behavioral toxicology methods were used to detect the content of catecholamine (CA) and various behavioral activities in the hypothalamus of newborn offspring. The results showed that the CA content in exposed offspring was significantly lower than that of the control group (P <0.01 and P <0.05) not only at 7 days after birth but also at 40 days after birth.