Towards the centre, where the Old City and Citadel stand, destruction is less obvious, but even there, shops and homes have crumpled in the face of concussion waves from enormous explosions, as well as direct hits.
"It was a loud noise, and after the noise there was a concussion-like wave of pressure that blew through the town," he said.
Nobody let me sleep for fear that I had a concussion from the waves hitting me around like a doll, and they made me drink water despite me not wanting to.
I will talk to them about a new helmet, which actually reduces the energy wave which causes concussion, through a coil system which uses compression to dissipate the harmful force.
"I could see Vic Morrow with the two kids, crossing toward the shore, and I experienced vibrations and concussions, just like a tidal wave hit the chopper," Mr. Smith testified.
EEG can identify brain wave patterns associated with concussion.
'We have kept a close watch for cerebral concussion occurring as direct impact of blast wave on humans', Zuckerman wrote, 'but so far our Casualty survey failed to disclose an instance.' It is clear, he concluded, 'that the damage is simply a bruising of lung tissue due to the impact of the pressure wave on the chest wall' (Zuckerman to Adrian, 1941).
The concussion policy, a high priority for Commissioner David Stern, came after a wave of stories and heightened awareness about brain trauma in sports.
There is dectection technology for concussions ranging from the King-Devick test, ImPACT test and BrainScope's EEG technology which all use single symptom diagnosis like eye movement, brain waves or a test-retest variance to determine concussion.
