Stimulation of gamma waves reduced levels of amyloid - β, decreased phosphorylation of tau, and led the brain's immune cells — microglia — to perform their usual housekeeping role, clearing
away cellular debris, including amyloid - β (as opposed mounting an inflammatory response as microglia do in Alzheimer's disease, Tanzi explained).
«We came up with a list of potential
cellular candidates that could be compensating for the loss of these specific macrophages and used several different tests to determine which cells were clearing
away the nerve
debris after injury,» Lindborg said.