主题:神经科学/Did you know
![](http://images.weserv.nl/?url=//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Human_brain_NIH.jpg/50px-Human_brain_NIH.jpg)
...神经脉冲的速度可达每秒120米!
...that the amygdala plays an important role in the processing and memory of emotional reactions?
...that less than ten percent of the brain is made up of neurons? [1]
...有些神经元的长度超过一米!
...that the cerebellum (the region behind the brainstem) contains half of the neurons in the brain?
...that when areas of the brain are damaged other areas can actually take over the job of the damaged area?
...that the size of the human brain has decreased by over 10% within the past few thousand years?[2]