Each 30-second segment of EEG data is labeled as one of five standard sleep stages: 1. W (Wake) 2. N1 (Light Sleep) 3. N2 (Intermediate Sleep) 4. N3 (Deep Sleep) 5. REM (Rapid Eye Movement Sleep) We ...

On an Apple Watch, "core sleep" is another name for light sleep, which scientists also call stages N1-N2. It is not a type of deep sleep, and has no relation to REM. But in the sc ...

It's no secret that a good night's sleep is key to a healthy brain. However, the full extent of the importance of rest on our cognitive function is still being explored. And now, new research has ...

PSG recordings included the following physiological signals: electroencephalogram (EEG, electrodes placed according to the 10-20 system), electrooculogram ... patients in the OSA group had a ...

While subjective data suggests prior mTBI leads to poorer sleep, there is little objective data to support this association.

Persistent Link: https://ieeexplore.ieee.org/servlet/opac?punumber=6287639 ...

Apr. 9, 2025 — A collaborative study found that while sleep duration recovers quickly, sleep timing and sleep architecture can take significantly longer to realign when traveling across time ...