Wonder why babies nap on some days but not on others? Or why older people wake up earlier? Mathematical modelling of sleep regulation provides some surprising answers to these and other questions, ...

For example, the model helps explain why teenagers tend to fall asleep and get up later than younger children. A slower rise in sleep pressure during wake means they can stay up longer and exposure to ...

In a paper published in npj Biological Timing and Sleep, researchers analyzed the mathematical structure of the two-process model (2PM) of sleep regulation, which was first proposed in the 1980s. The ...