med.umich.edu Background Reaction time (RT) is a valuable component of the sport concussion ... To address this, we developed a simple clinical test of RT (RT clin) that involves grasping a falling ...

This is called complex reaction time. Are there any other tests that people can do? Yes. There is a simple test you can do with a ruler. The task is to get someone to hold a ruler above your hand and ...

One simple method involves dropping a ruler between someone's open thumb and forefinger. The higher the reaction time needed to grasp the falling ruler, the further the ruler falls before being ...