A task force of head injury experts called the Concussion In Sport Group met in 2001 and decided that "concussion may result in neuropathological changes but the acute clinical symptoms largely reflect a functional disturbance rather than structural injury."
En arbejdsgruppe af hovedskadeeksperter mødtes i 2001 og besluttede at "hjernerystelse kan resultere i neuropatologiske ændringer, men de akutte kliniske symptomer mestendels reflekterer en funktionel forstyrrelse, mere end en strukturel skade."