主题:神經科學/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)
...神經脈衝的速度可達每秒120公尺!
...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]
...有些神經元的長度超過一公尺!
...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]