Sleep Clinical Trial
Official title:
Relationships Between Sleep Spindle and Cognitive Process in Healthy Adults
Meta-analyses demonstrate that sleep spindles, characterizing NREM sleep, may be a physiological index of high-level cognitive processes. The aim of the study is to determine if sleep spindles can predict interindividual variation in attention and cognitive performance. Relationship between attention and cognitive performance and sleep spindles characteristics (density, frequency and amplitude) recording during 1 night in 80 healthy subject (aged between 18-75y), will be calculated.
It is currently well demonstrated that sleep promotes brain plasticity and therefore is directly involved in cognitive processes such as memory, language, reasoning, learning, intelligence, problem solving…. Sleep deprivation affects most cognitive processes. More specifically, it is the sleep microstructure and in particular the sleep spindles that are specifically linked to memory, learning and cognitive abilities. Sleep spindles are grapho-elements that characterize NREM sleep. They exhibit high inter-individual stability and variability, depend on the genetic heritage and correlate with anatomical properties of the brain. Sleep spindles can therefore be considered as an electrophysiological "finger-print" as one of the most heritable traits of humans. Studies support the notion that sleep spindles are electrophysiological markers of high-level cognitive abilities. It remains to be seen whether the sleep spindles can predict interindividual variations in attention and executive functions. ;
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