When someone faces Alzheimer's disease or mild cognitive impairment (MCI), their brain struggles to process and organize information. Researchers looked at EEG microstates, which are stable patterns of brain activity that help us understand how large networks in the brain function together.
The study analyzed 16 different reports involving people with these conditions compared to healthy individuals. They found that patients with Alzheimer's showed a significant increase in the duration of certain brain wave types (labeled A and B). Meanwhile, those with mild cognitive impairment showed an increased rate of occurrence for type A waves but a decrease in the duration of type D waves.
While these findings are helpful for understanding how the brain functions as it ages or declines, there is still a lot to learn. Because the data comes from many different studies, some results are less certain. For now, these patterns serve as a way to help scientists study brain networks rather than a tool for immediate diagnosis.
