Sentences with phrase «signals in the brain scans»

Not exact matches

BRAINY CHIMPS Some modern chimps have brain surface features that were thought to have signaled humanlike brain evolution in hominids from as early as 3 million years ago, scans suggest.

Scientists already employ fMRI, which uses changes in blood flow as a proxy for brain activity, to scan the brains of restrained monkeys, but Berns wanted to train dogs to willingly enter the machine and learn simple things, such as associating a hand signal with a reward of a hot dog, all the while staying still enough to collect interpretable brain scans.

A brain - scanning study has found that the part of the brain that sends out safety signals seems to be less active in people with obsessive compulsive disorder (OCD).

The scans revealed that when praised, 13 of the dogs showed equal or greater levels of brain activity in the region that controls decision - making and signals rewards than when they received food, the scientists will report in an upcoming issue of Social Cognitive and Affective Neuroscience.

The fMRI scan does this by detecting indirect changes in the brain's blood flow in response to changes in electrical signalling during the stimulus.

fMRI scans of males» brain activity after smelling tears revealed that males» brains had less activity in regions associated with sexual arousal, which suggests that odorless tears contain a chemical signal that men unconsciously detect.