Furthermore, differences in the sleep-wake structure, sleep propensity, and cognitive performance during sleep loss between individuals have been predicted by certain polymorphisms in PER3 [51].
Based on these data, the two-process model of sleep regulation posits that sleep propensity exponentially rises during waking and declines during sleep [8], [9].
The homeostatic component of sleep propensity predicts increasing sleepiness during wake [38], and recovery of the PLR would not be expected.
John Bowlby [ 23] utilized the British relocation of youths into the countryside during World War II to study the plight of young people and their propensity to become criminals in the wake of dislocation from home and while struggling with separation from their families of origin.
Despite the small victories that have come in the wake of these tragedies, I'm tired of our propensity to lament them but do very little to stop the next one.
Sleep propensity rises as a homeostatic response to increasing wake time, whereas a circadian clock determines the specific time when sleep will probably occur.
That's why the New Yorker last -- it's just enough". There is also something about the magazine's propensity for the sly comment, especially in the wake of collective tragedy or experience.
40 The timing of sleep and wakefulness is influenced by the interaction between homeostatic sleep propensity and circadian processes, such that the circadian drive for wakefulness during the daytime opposes the gradual buildup of pressure for sleep as waking is sustained.
Slowing of the waking EEG is generally recognised as a physiological indicator of subjectively experienced sleepiness, and indeed, increased sleep propensity [ 33].
The HSI (0 6-point scale) includes one item addressing quantity (using a 0 6-point comprescaleformat) plus another includesessing smoneng urgency, that item"How soon addressingwake up do you smoke your first cigarette?" The FTND (0–10-point scale) includes the HSI plus other indicators of behavioral propensity to smoke in various situations.
