If our brain was only a quarter of what it is now, could we survive?

Question: If our brain was only a quarter of what it is now, could we survive?
- Keywords:
  brain,
  quarter,
  survive
Asked by TomHol to Ed on 14 Nov 2017.
- Ed Bracey answered on 14 Nov 2017:
  
  It would be possible to survive, depending on which part was removed.
  However the person would likely be in a vegetative state, meaning they wouldn’t be able to respond to the outside world.
  https://www.nature.com/news/neuroscience-the-mind-reader-1.10816
  
  However, there are cases of people having half of their brain removed because of illness and still surviving!

Oli commented on 15 Nov 2017:

(Edward’s the expert on these things, but I’d just like to add that you can find stories of people living lots of their lives without knowing they’ve got only a tiny portion of a normal brain. This story, for instance, refers to a woman who was born with about half the normal number of neurons but seemed mostly fine, as well as a couple of other interesting examples https://www.headstuff.org/science/really-need-brain/)

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238nepk36 commented on 16 Nov 2017:

do you like cod ww2 cause it is so good

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- Oli commented on 17 Nov 2017:
  
  I haven’t tried it yet! I’ll have to see if any of my mates have got it so I can have a go…
  
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Question: If our brain was only a quarter of what it is now, could we survive?