Radiolab broke the story with their http://www.radiolab.org/story/...
">Bringing Gamma Back episode. The remarkable thing about this research is that they focused on the lack of gamma wave activity in those suffering from Alzheimers. This has been observed in both the brains of mice and humans.
If human brains cannot have gamma waves induced with LEDs like mice, I am sure there are many different options for inducing gamma. However, the fact that mice and human brains both have gamma wave patterns and both lack this brain pattern when suffering Alzheimers seems to bode well for the possibility that inducing gamma in human brains will also trigger the brain's self cleaning processes like it did in mice.
Most research involving mice involves chemical reactions that can be nuanced enough to not apply to humans. However, this specific research seems to be based on the fundamental functionality of the brain which is more likely to be common across various mammals.