Co-chief stipendiary steward for the Racing Integrity Unit, Ross Neal, said: "Each jockey has a baseline cognitive test lodged with the RIU.
"The science around concussion has improved enormously and now if a jockey is concussed they must go to their doctor who will test for obvious cognitive signs like slurring of speech and the like," he told the Herald yesterday.
"If that doctor provides a pass mark, the jockey is seen by the RIU medical director who makes the call how close the cognitive test is to the one stored in the racing files.
"If it's close, a clearance will result," said Neal.
In many sports such as rugby and league, competitors will undergo cognitive tests during a match and, if passed clear, can resume play.
"We take a much more cautious approach to that," said Neal.