Glymphatic system discovery (2012)
Researchers led by Maiken Nedergaard at the University of Rochester discovered a previously unknown system in the brain that clears waste products. The glymphatic system uses cerebrospinal fluid to flush toxins from brain tissue, a function scientists had assumed happened through other mechanisms.
The discovery opened a new field of research into how the brain cleans itself and linked sleep to waste clearance.
The glymphatic system is now studied in connection with Alzheimer's disease, stroke, and other neurological conditions.
Like the locus coeruleus discovery, it revealed a previously unknown brain-wide system that overturned long-held assumptions and opened new research directions.
