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 10 of 10 for “"Sleep spindles"”.
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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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Employing Intracranial EEG Data to Decipher Sleep Neural Dynamics
Over the course of a typical night, sleep is comprised of multiple different stages that involve changes in brainwave patterns. Intracranial EEG (iEEG) is an invasive brain recording technique used in hospital settings in epileptic patients to determine the focus of their seizure activity. The …
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Strategies for developing ultrathin, high-density, actively multiplexed neural mapping device
… spatial resolution. Brain activities, such as sleep spindles, single-trial visual evoked responses, and electrographic seizures could be successfully recorded. Analysis of the recorded data reveals the propagation of the punctual spatial patterns composed of planar and spiral waves during …
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Evaluation of an accessible automatic sleep spindle detector
An important component of sleep medicine is assessing a patient’s polysomnogram, which includes sleep staging. The American Academy of Sleep Medicine (AASM) requires that sleep staging must take into account the number of sleep spindles, a short burst of neural oscillatory activity, demonstrating …
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Cellular and Circuit Properties of Slow Oscillations In The Thalamic Reticular Nucleus
<p>During sleep, neurons in the thalamic reticular nucleus (TRN) generate distinct types of oscillatory activity. While the reciprocal synaptic circuits between TRN and sensory thalamic nuclei underlie the generation of sleep spindles, the mechanisms regulating slow (<1 >Hz) forms of thalamic …
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Learning new words: effects of meaning, memory consolidation, and sleep
… The third question focused on the role of sleep in the consolidation of novel words: which aspects of sleep architecture are associated with lexical integration? Experiment 8 looked at sleep during the night after word learning and sought to clarify the roles sleep spindles and different …
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State-space Modeling of Neural Oscillations: Toward Assessing Alzheimer’s Disease Neuropathology with Sleep EEG
… two decades have highlighted brain waves during sleep as a window of opportunity to assess neural activity impacted by AD neuropathology before clinical symptoms emerge. However, many existing practices in sleep electroencephalography (EEG) analysis are based on visual inspection and the …
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Dynamics and precursor signs for phase transitions in neural systems
… neural state transitions associated with sleep, seizure and anaesthesia. The aim is to address the question: How does a brain traverse the critical threshold between distinct cortical states, both healthy and pathological? Specifically we are interested in sub-threshold neural behaviour …
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Μελέτη εγκεφαλογραφικών ρυθμών ως συμβολή στη φυσιολογία του ύπνου και την παθοφυσιολογία επιληπτικών συνδρόμων
Η μελέτη των εγκεφαλογραφικών ρυθμών του ύπνου μπορεί να δώσει πληροφορίες για τους υποκείμενους νευροφυσιολογικούς μηχανισμούς που ελέγχουν και οργανώνουν τον φυσιολογικό ύπνο. Το θαλαμοφλοιικό κύκλωμα και τα συστήματα εγρήγορσης του δικτυωτού σχηματισμού είναι δυο νευρικά κυκλώματα με κεντρικό …