The workings and purpose of sleep and dreaming have long been shrouded in mystery. A
major scientific goal is to shed the light of modern neurobiology on the inner mechanisms of …

The workings and purpose of sleep and dreaming have long been shrouded in mystery. A
major scientific goal is to shed the light of modern neurobiology on the inner mechanisms of …

While sleep stages are defined by neurophysiological criteria (ie, electroencephalographic
recording), sleep has been explored with functional brain imaging techniques to …

While the definition of sleep stages and corresponding brain activity was originally based on
electrophysiological recordings and behavioral criteria, there has been an increasing …

Publisher Summary This chapter presents the neuroimaging studies conducted during
normal sleep. The studies using positron emission tomography (PET), single photon …

The majority of functional neuroimaging studies of normal human sleep have compared
brain activity patterns between stages of sleep and wakefulness [1, 2]. Most of these studies …

The most important aspect of sleep in relation to its function is its homeostatic regulation.
The time course of delta activity (spectral power with 0.75–4.5 Hz) in the …

Already Aristoteles discussed on restorative functions of sleep (cf.[1]). BorbeÂly [2] was the
first to show that the restorative function of sleep correlates to a reduction of homeostatic …

Sleep deeply modifies the regulation of most physiological systems (Orem and Keeling,
1980). However, during sleep, no functional changes are more profound than in the central …

Some 20 years ago, Michel Jouvet wrote in the concluding chapter of his book The paradox
of sleep-the story of dreaming “… the majority of researchers are waiting with bated breath …