关于智力的分子基础和较高级的精神活动的解剖结构特点,目前仍不够了解。除遗传异常(如第21染色体三体性畸形)、先天缺陷(如半乳糖血症)和感染(病毒和细菌)外,环境因素在脑发育的关键时期可以产生永久性影响。各种不同的条件可为探讨精神发育 The anatomical features of the molecular basis of intelligence and higher-level mental activity are still not well understood. In addition to genetic abnormalities (such as trisomy 21), congenital defects (such as galactosemia) and infections (viruses and bacteria), environmental factors can have a permanent effect at critical stages of brain development. Various conditions can be explored for mental development