In cognitively healthy people with a genetic risk for Alzheimer's, retinal changes have been associated with alterations in the entorhinal cortex, hippocampus, and lingual gyrus. Researchers say retinal changes can be used to track changes in brain structures associated with Alzheimer's in those with genetic risk factors.
Researchers say those who use both cannabis and nicotine have greater brain connectivity that those who take one or the other. The networks of those who used both substances closely resembled those who people who took neither drug.
Researchers report two neural networks broadly overlap in people who intentionally let their minds wander.
Researchers investigate the brain areas activated when music fans are able to decide for themselves how much they want to pay for their tunes.