Otto等经过3～4年的研究得出结论:儿童体内含量很少的铅,可影响其脑电活动,使之发生持久性的改变。重要的是这种影响没有“阈值”或安全水平。某些研究者已经证明,铅在儿童体内含量即使很少,也会影响儿童的智力商(IQ)和他们的行为活动。但是,这些研究的弱点是研究结果没有排除社会因素、文化等对智力商可能造成的影响。 Otto应用脑电图(ECGs)技术,记录脑电活动,完全排除了“混乱因素”的影响。如果铅影响儿童的脑组织,那么损伤将会在脑电图上 After three to four years, Otto et al. Concluded that lead in children with low levels of content can affect their EEG activity and cause permanent changes. It is important that this effect has no “threshold” or level of safety. Some researchers have shown that even small amounts of lead in children can affect children’s IQ and their behavioral activity. However, the weakness of these studies is that the findings do not exclude the possible impact of social factors and culture on IQ. Otto’s use of electroencephalography (ECGs) technology, recording EEG activity, completely ruled out the “chaos” of the impact. If lead affects children’s brain tissue, the damage will be on the EEG