australian neuroscientist serge pallas explains what these animals are up to while most of us are sleeping there tracing off the one on one animal tries to get up to the other ones. and they roll over to be offended souls and you see that they both take turns at doing this behavior. researchers wanted to see what would happen if the young rats were raised with no one to play with in an alternative rearing condition we have a juvenile growing up with an adult and adult rats don't like playing with juveniles so i will hang around together the groom when i sleep next to one another but i want to gauge in rough and tumble play that the juveniles day i and i know. the play deprived rats fail to develop social skills including the ability to play normally with one another. at the end if the experiment the brains from the play deprived rats were closely examined. the part responsible for decision making and impulse control was underdeveloped. so he was the set of experiments where we actually shot it is play changing the prefrontal cortex and then old these changes we've seen much to play deprive