人的手指能够运动自如,主要取决于大脑对手指的支配作用;反过来,如果经常运动手指,就会对大脑有一定的刺激作用。在大脑皮层内部,仅仅管理一个大拇指活动的区域,就比管理一整条大腿的区域要大10倍多。现代医学家们还发现,脑萎缩病人手指的灵活协调性大为下降。相反,经常利用手指从事灵巧、精细动作的人,则较少发生脑萎缩和老年性痴呆症。 People’s fingers to move freely, mainly depends on the brain’s domination of the fingers; the other hand, if you often exercise your fingers, it will have some stimulating effect on the brain. Within the cerebral cortex, managing just one area for thumb activity is more than 10 times larger than managing the entire thigh area. Modern medical scientists also found that the flexibility of finger coordination in patients with brain atrophy dropped significantly. On the contrary, people who frequently use their fingers for dexterous and delicate movements are less likely to experience brain atrophy and dementia.