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 ...

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

Sleep stages were scored in 20s epochs by applying international infant scoring standards. EEG signals (C3-A2, O2-A1) were processed in 20s epochs to obtain SAT%, an index describing the amount of ...