Onboard computer

 作者:郁坛     |      日期:2019-03-08 02:01:02
FORAGING ants use a “trip computer” in their brains to learn the way back to their nest. Ants rely on landmarks to navigate, but also use a system of dead reckoning, thought to involve counting steps. When Tom Collett of the University of Sussex in Brighton and his colleagues allowed ants to run through mazes with symbols above the choices of passageways, they found that the insects learnt these landmarks more quickly when their dead reckoning told them that they were heading in the right direction (Nature, vol 399, p 769). “We know that at any point ants can subtract the coordinates of their current position from their goal position and compute the direction home,