Concussion research at the National Institutes of Health: an update from the National Institute of Neurological Disorders and Stroke

Written by Meghan Mott & Walter Koroshetz

Concussion is an exceedingly common type of traumatic brain injury (TBI), yet little is known about what happens to the brain at the time of concussion. A concussion can be defined as a sudden onset change in neurologic function that occurs immediately after the brain encounters a mechanical force. When the head sustains an injury, direct or rotational biomechanical forces induce physiologic dysfunction; the most characteristic is immediate loss or alteration of consciousness. Each year, between 1.6 and 3.8 million sports-related concussions occur in the USA, particularly in youth athletes [1]. In the US military, it is estimated that roughly...

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