Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"NREM sleep"”.
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NREM sleep spindles and slow wave sleep in younger and elderly women: an investigation of their influence on declarative memory consolidation
Previous research shows that slow wave sleep (SWS) and sleep spindles play an essential role in declarative memory consolidation. However, this role is not well understood in the ageing women. With advancing age, SWS and sleep spindles undergo significant decreases in duration and density, while …
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The Impact of Synchrony On Neuronal Coding and Behavior
… of synchrony by studying the influence of NREM sleep (where high levels of synchrony are observed) on coding and cognitive performance. We used non-human primates to record the changes in activity of single neurons, neuronal populations, and local field potentials in V4 that occur before, …
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Non-REM dreaming in relation to the cyclic alternating pattern an exploratory study
Dreaming is yet to be studied in relation to sleep microstructure. By endeavouring to study mentation in relation to the finer neurophysiological processes underlying the rhythmicity of the sleep cycles, dream science stands to benefit from the wealth of knowledge of these processes. While …
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Sonno e funzioni cognitive: ruolo della microstruttura del sonno NREM
… is a fluctuation of the arousal level during NREM sleep and consists of the alternation between two phases: phase A (divided into three subtypes A1, A2, and A3) and phase B. A1 is thought to be generated by the frontal cortex and is characterized by the presence of K complexes or delta bursts; …
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The functional neurophysiological sequelae associated with high frequency dream recallers
… 'arousal-retrieval' model positing that intra-sleep wakefulness is required for dream traces to be encoded into long-term storage, essentially proposing increased DRF as a product of a better memory for dreams. Results from recent studies support this model by demonstrating longer periods of …
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Neural Dynamics of Mental Imagery, Visual Perception, and Rapid Eye Movement Sleep
… the functional role of rapid eye movement (REM) sleep, we sought to gain a deeper understanding of the differences between neural activity during REM sleep and during the awake state. We set out to investigate the temporal directionality of communication and coupling in neural activity between …
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An Integrated Software System for EEG/EMG-Based Forward Genetic Screen of Sleep/Wake Abnormalities in ENU-Mutagenized Mice
The executive neural circuitry and chemistry for sleep/wake switching mechanisms have been increasingly revealed in recent years. However, the very fundamental mechanism of sleep regulation remains a mystery, for example, with the question of what is the neural substrate for “sleepiness” still …
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Investigating state-dependent pontine cholinergic activity during REM sleep and P-waves in vivo
Rapid eye movement (REM) sleep is a behavioural state during which phasic deflections in pontine LFP, known as pontine waves (P-waves), occur most prominently. Cholinergic pedunculopontine and laterodorsal tegmental nucleus (PPT/LDT) neurons have been implicated in the generation mechanisms of both …
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Regulation of dorsal raphe serotonergic neurons by histamine
Neural control of the sleep-wake cycle results from the complex interaction of neurotransmitters systems, which arise from anatomically and chemically defined brain structures. Serotonergic neurons located in the dorsal raphe nucleus (DRN) are currently accepted to be wake-promoting however their …
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Influenza dell'Omeostasi Idrico-Elettrolitica sul Ciclo Veglia-Sonno
During the wake sleep (W-S) cycle in mammals, the alternation of the different states, wake, NREM sleep (NREMS) and REM sleep (REMS), is associated not only with electroencephalographic or behavioural changes, but also with modifications in the physiological regulations of the organism. The most …
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WHEN LIGHTNING STRIKES THE BRAIN: INTEGRATED INFORMATION THEORY AND THE CAUSAL PERSPECTIVE
… stimulation delivered during wakefulness and NREM sleep. The fourth study is a computational work that investigates the concept of causal emergence, surveying different measures of causation in the literature. Using simulated toy systems, the study demonstrates that, contrary to reductionism, …
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Sleep oscillations and their temporal association in neocortices in mice
… during wakefulness are replayed during sleep to consolidate the relevant information. At the circuit level, this process is thought to be reflected by the synchronised cortical activity during non-rapid eye movement (NREM) sleep. This cortical synchronisation is described by slow wave …
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L'influenza del sonno sull'andamento temporale della consolidazione delle abilità procedurali
… (Am J Psychol 1924;35:605-12), that a period of sleep provides a specific advantage for the consolidation of newly acquired informations. Recent research about the possible enhancing effect of sleep on memory consolidation has focused on procedural memory (part of non-declarative memory system, …