上图为低IQ个体的大脑；下图为高IQ者的大脑，树突轴突网络连接更为简洁
对于智力高者大脑激活程度低，另一个可能的解释是∶高智力的参与者可能更强烈地激活了大脑区域，但持续时间较短（与更快的表现有关），因此随着时间的推移，其总激活程度降低【14】。
从目前的研究来看，大脑结构对智力的影响显然是多方面的，无法用单个因素进行解释。
要想让大脑更聪明，就要从孩子小时候有意识培养，并且还要做好关键脑营养的补充，尤其是可以做增加大脑白质和提高大脑神经元集中连接的营养，例如磷脂类，脑磷脂群最为重要。
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