“…The degree of unconsciousness and amnesia at the time of an accident are also indicators of the seriousness of the injury and are often correlated to the risk for long-term sequels (33,36,37). Many cases of trauma to the head in bicyclists can, however, be classified as minor brain injuries (22,33), but even such injuries are important to prevent, since they can lead to prolonged negative consequences for the individuals who are hurt (33,38). Furthermore, it is often difficult to predict what type of long-term problems will occur, because different parts of the brain can be affected.…”