noise
Noise-cancelling headphones under anesthesia cut nausea after surgery in a Chinese trial
Among 192 women having keyhole gynecologic surgery, 35% of those wearing headphones were sick within two days, against 52% without.
Pink noise cost sleepers 19 minutes of REM in a Penn lab
A week of sleep-lab nights with 25 adults found that the steady hiss sold as a sleep aid trimmed dream sleep, and that foam…
Dance-music crowds wear earplugs more than other concertgoers do
In a USC survey of about 2,000 music fans, 70% of electronic dance music regulars used hearing protection against 59% of everyone else, and…
One night of quiet road noise stiffens blood vessels by morning
In 74 healthy adults sleeping in their own beds, 30 to 60 simulated traffic pass-bys at 41 to 44 dB, below WHO night limits,…
The 10-minute birdsong reset, and why traffic cancels it
Two 2026 studies found 10 minutes of birdsong raised heart-rate variability and improved mood, and that road noise below WHO limits erased the gain.