That might sound scary, but it’s an essential function ... which can help calm anxiety and stress and help us sleep. It can help us sleep by slowing brain activity and dropping our heart rate ...
If it works right, you’ll be lulled into sleep. Some white noise machines offer options, too. You can choose to listen to the sound of ocean waves crashing on the sand or a waterfall.
Arousal during sleep is caused by a change in the pattern of brain wave activity, as measured by an EEG. Arousal typically represents a shift from deep sleep to light sleep or from sleep to ...