They also noted that while psychometric and memory tests helped differentiate dementia from affective disorders, the tests said little about the degree of cognitive impairment.
The more the two regions worked together, the better people performed on the memory test, Voss says.
It also "elegantly shows" for the first time that stimulation on the surface of the skull can reach deep brain structures (such as the hippocampus) and increase communication and synchrony throughout the network, ultimately improving performance on a memory test, he says.
"This study found that two diabetes drugs could slow nerve cell damage in mice with some of the hallmarks of Alzheimer's and that the animals also performed better on a memory test," Dr Ridley said.
They and other Ecstasy users flown in from the West Coast took memory tests while still jet-lagged, they said.
Chrebet, who said he has had concussions before, will take a memory test on Friday, but said there was zero doubt he would play Sunday.... Defensive lineman RICK LYLE broke his nose in practice on Wednesday.
The caffeine-exposed offspring performed badly on a series of memory tests and were more susceptible to seizures as they matured, Silva says.
"This paper provides novel evidence for memory impairment in large animals that have brains similar to humans," says Paul Buckmaster, a neurobiologist at Stanford University in Palo Alto, California, whom Cook consulted about how to do memory tests.
"My kids scored better on memory tests and I was able to accomplish most of my math and writing curriculum before the end of the year," said Evans.
In addition, they said, the memory test was not sensitive enough to pick up subtle changes.
