Regional differences in sleep EEG dynamics indicate that sleep-related brain activity
involves local brain processes with sleep stage specific activity patterns of neuronal …

Sleep slow-wave activity (SWA) is thought to reflect sleep need, increasing in proportion to
the previous time awake and decreasing during sleep, although the underlying mechanisms …

Graph theoretical analysis of functional magnetic resonance imaging (fMRI) time series has
revealed a small-world organization of slow-frequency blood oxygen level-dependent …

The authors present here mathematical models in which levels of subjective alertness and
cognitive throughput are predicted by three components that interact with one another in a …

Sleep inertia is the impaired cognitive performance immediately upon awakening, which
decays over tens of minutes. This phenomenon has relevance to people who need to make …

The electrical activity of the brain does not only reflect the current level of arousal, ongoing
behavior, or involvement in a specific task but is also influenced by what kind of activity, and …

1. The spontaneous activity of neurons in postero-lateral cortex of cats was studied during
natural sleep and waking. 2. 2. The rate of most units changes in one of two ways with …

The negative effects of sleep deprivation on alertness and cognitive performance suggest
decreases in brain activity and function, primarily in the thalamus, a subcortical structure …

It has been posited that a critical function of sleep is synaptic renormalization following a net
increase in synaptic strength during wake. We hypothesized that wake would alter the …

Lapses of attention manifest as delayed behavioral responses to salient stimuli. Although
they can occur even after a normal night's sleep, they are longer in duration and more …