Toward Treating Alzheimer’s Disease with Brain Waves

In Articles, Gamma Waves, Healing, Memory, Research by Ashley P. Taylor

In a mouse model, researchers mitigated three Alzheimer’s disease–associated symptoms by stimulating gamma waves with light.

When brain cells fire rhythmically and in sync, they produce waves, which are categorized by their firing frequencies. Delta waves (1.5 Hz to 4 Hz), for example, are produced during deep sleep, theta waves (4 Hz to 12 Hz) occur during running and deep meditation, and gamma waves (25 Hz to 100 Hz) are associated with excitement and concentration. Disruption of gamma waves could be a key contributor to Alzheimer’s disease pathology, according to a mouse study published today (December 7 2017) in Nature. And the restoration of these waves, researchers propose, may one day be an option for Alzheimer’s disease treatment.

MIT’s Li-Huei Tsai, Ed Boyden, and their colleagues have shown that stimulating neurons to produce gamma waves at a frequency of 40 Hz reduces the occurrence and severity of several Alzheimer’s-associated symptoms in a mouse model of the disease. The researchers induced slow gamma waves using optogenetics, and by exposing the mice to flickering light—an approach they suggest could translate to human therapies…

Read the full article here The Scientist