By exposing mice to light and sound, neuroscientists improved cognitive and memory impairments similar to those seen in Alzheimer’s patients. More from LATmelissahealy:
In the new study, researchers added acoustic stimulation that pulsed at the same frequency as the visual stimulation. And when mice — which were bred to develop Alzheimer’s-like symptoms — were exposed to both, researchers saw that the neurons in several of their brains’ key memory circuits chimed in and began humming along at exactly the same frequency.
In some structures, the number of amyloid plaques in the brains of treated mice was reduced by more than half compared to mice that didn’t get the stimulation treatment. In treated mice, researchers also saw improvements in the state of blood vessels in the brain, which had become weak and leaky. Brain regions that had begun to shrink and falter were pinking up again.
These changes occurred not just in the brain regions that were on the receiving end of the stimulation, the visual and auditory cortices. They were happening in more far-flung brain regions that sputter and fail in Alzheimer’s and in several other brain diseases: the
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