By 
Clifford Robbins
 | 
TED-Ed Original

What happens when you have a concussion?

Each year in the United States, players of sports and recreational activities receive between 2.5 and 4 million concussions. How dangerous are all those concussions? The answer is complicated and lies in how the brain responds when something strikes it. Clifford Robbins explains the science behind concussions. [Directed by Rémi Cans, narrated by Addison Anderson, music by Nicolas Martigne].

Related tags:

health
memory
personality
psychology
public health
ted-ed
brain
animation
education
human body
biology
science
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