concussion

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concussion

a jarring of the brain, caused by a blow or a fall, usually resulting in loss of consciousness

concussion

[kən′kəsh·ən]
(engineering)
Shock waves in the air caused by an explosion underground or at the surface or by a heavy blow directly to the ground surface during excavation, quarrying, or blasting operations.
(medicine)
A state of shock following traumatic injury, especially cerebral trauma, in which there is temporary functional impairment without physical evidence of damage to impaired tissues.
References in periodicals archive ?
Wang and colleagues studied 18 concussed players and 19 non-concussed players.
Furthermore, 31% indicated that they had been concussed on two or more occasions.
"There's always doubt because you have to pass the CogSport test and you never truly know until you've done that, but I knew that I didn't get knocked out and concussed as badly as I have done in the past.
David Splaine, who was mildly concussed in a fall in a handicap hurdle on the same card, was stood down for six days in accordance with regular procedure.
"Nico is concussed, it didn't look anything serious but we didn't want to take a risk."
This strategy, however, is often extended beyond the acute and sub-acute phases, such that concussed athletes are essentially sequestered--with no texting, computer use, video games, school work exercise and sport activity--particularly if symptoms return or worsen.
But clerk of the course Fiona Needham said: "She's quite badly concussed and has dislocated her shoulder, but she is stable.
That's not due to any fine warbling on their part, but because the judge is concussed and confused after Ashley accidentally hits him with a curtain pole.
The requisite waiver form states, "I assume all risk of injury to my person and property that may be sustained in connection with any activity including the tournament or pickup games." No word on whether damaged limbs or concussed craniums are considered the property of the Research Fund.
Skipper Phil Vickery is on course to make the opening game after being concussed in Marseille.
Sole believes the allegation could have been made to mask the fact that O'Gara was concussed - which would dictate medically he could play no part in this weekend's crucial RBS Six Nations clash in Italy.
Headache, seen in up to 85% of concussed athletes, is the most common symptom.