Lab-made "mini-brains" are helping scientists makes a breakthrough involving a gene implicated in various neurodegenerative diseases linked to old age.
This intricate system allows us to identify a trillion distinct scents, influencing everything from what people choose to eat, to recognizing friends or foes and triggering old memories.
When you lose this key sense, your brain works harder to detect sound. Researchers have discovered that these subtle brain changes appear to contribute to dementia onset.