The elite men and woman start before the general field, and participants in the general field are released one at a time severalseconds apart to avoid crowding.
Using optogenetics, a technique that allows researchers to inhibit specific cells with light, the researchers turned off IL cortex activity for severalseconds as the rats approached the point in the maze where they had to decide which way to turn.
In the scenario that combined cell phones with the heaviest traffic, older people took severalseconds longer to start crossing than the college students.