Tokyo, Apr 25 : Riken in conjunction with Tokyo Institute of Technology announced on April 23, that a research conducted on monkeys, testing to find the correct and incorrect answer, unveiled two types of nerve cell groups in the frontal lobe of the cerebrum.

One type of nerve cell group responds at the moment when the monkeys realize that their answer was correct, while the other type responds when their answer was not correct.

The nerve cells stop responding after the monkeys have learned the lesson. As such, the researchers found that these nerve cells appear only momentarily when they are processing the right information in their brain.

The findings were published online in Nature Neuroscience on April 22.