Rats perform better on memory tests when certain brainwave-producing neurons are stimulated while they sleep. If we can boost these brainwaves in people, it could help treat memory impairments in those with dementia Rats perform better on memory tests when certain brainwave-producing neurons are stimulated while they sleep. If we can boost these brainwaves in people, it could help treat memory impairments in those with dementia New Scientist – News