A blow to the head can cause
the brain to move and hit the skull.
A man's head in profile with an overlay
of the skull and brain is knocked into a pole.
Here, a punch in a boxing match
shakes the brain from side to side.
Facing the front, the head is struck by a gloved
fist, forcing the brain against the skull.
A concussion can cause major
confusion due to brain distortion.
In profile, a glow starts at the stem
and spreads up across the whole brain.