Theory 11/Sleep-wake cycle/Progression phase
Architecture Follows Pressure Decay
The claim
The proportion of deep sleep is set by the ratio of pressure at sleep onset to the rate it dissipates, so a sleep-deprived night is deep early and light late.
01Mechanism
Slow-wave activity tracks pressure; the decay rate sets how the night redistributes.
02Prediction
Deep-sleep fraction should track the ratio.
03Refutation
Architecture tracking time in bed would remove pressure.