Researchers looked at data from 1,778 people to see how the brain processes visual information. They specifically measured something called FVEP-P2 latency, which is a measure of how long it takes for the brain to respond to certain visual signals. This study included people with Alzheimer's disease, mild cognitive impairment, and vascular dementia.
The results showed that people with Alzheimer's disease had significantly longer signal delays compared to healthy individuals. The researchers also found similar patterns in people with other conditions like vascular dementia and progressive dementia. However, because the data for these specific groups came from a small number of comparisons, the findings are currently considered preliminary.
It is important to note that this study only shows a link between brain signals and these conditions. It does not explain exactly why this happens or prove that this test can be used as a primary way to diagnose dementia. Because there was a lot of variation in the data, more research is needed before these findings can change how doctors treat or diagnose patients.
