横轴：年龄

曲线：大脑发育的阶段

由于大脑进化，人们拥有识别能力和语言能力。大脑的高级部分拥有高级功能（逻辑logical、批判critical）。大脑进化的不同时期对人有不同影响，大脑进化阶段的缺陷可能会对人未来生活有负面影响。

1. This lecture talks about the brain development.

2. Some of the brain functions were formed before one year old while other developments take times.

3. Childhood development has great impact on adult brain in three aspects including sensory pathway, language and higher cognitive function.

4. Sensory pathway comes to maturation at the age of 4 while congnition may become mature at about 16 years old.