The Brain

 

The brain is made of billions of interconnected neurons.

 

You need to know the following regions and their functions:

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Autonomic - something controlled automatically, without conscious control.

 

Investigating the Brain (HT Only)

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Scientists investigate how different parts of the brain using the following methods:

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There are some challenges in brain research which make it hard for scientists to understand:

• Complexity — billions of connections  

• Individual variation — no two brains identical  

•  Ethics — invasive, risky, needs informed consent