Search results for "Sleep"
showing 10 items of 982 documents
Simulated Annealing Technique for Fast Learning of SOM Networks
2011
The Self-Organizing Map (SOM) is a popular unsupervised neural network able to provide effective clustering and data visualization for multidimensional input datasets. In this paper, we present an application of the simulated annealing procedure to the SOM learning algorithm with the aim to obtain a fast learning and better performances in terms of quantization error. The proposed learning algorithm is called Fast Learning Self-Organized Map, and it does not affect the easiness of the basic learning algorithm of the standard SOM. The proposed learning algorithm also improves the quality of resulting maps by providing better clustering quality and topology preservation of input multi-dimensi…
The effect of time-of-day and sleep deprivation on postural control: A systematic review.
2022
Background: Postural control (PC) can be affected by circadian rhythm and sleep deprivation, whereby it has been reported the result of PC measurement in clinical and experimental situations can be influenced by both factors. It has been suggested sleepiness can result in deficiency in PC, which in turn can lead to occupational accidents and subsequent injuries. This is while no study critically reviews or summarizes findings surrounding this topic in the literature. Research question: Is there any significant effect of sleep deprivation and circadian rhythm on PC variables among healthy individuals? Methods: PubMed, Web of Science, Scopus, and Embase were used to detect relevant studies. O…
Emotional intelligence in children with severe sleep-related breathing disorders
2019
Background. Obstructive sleep apnea syndrome (OSAS) affects up to 4% of a pediatric population, with many comorbidities in the medium-long term. Functional alterations in the prefrontal cortex (PFC) may explain why OSAS impacts aspects such as executive functions, memory, motor control, attention, visual-spatial skills, learning, and mood regulation. Emotional intelligence (EI) is a complex neuropsychological function that could be impaired in many clinical conditions. Purpose. The aim of the study is to evaluate the difference in emotional intelligence skills among children with OSAS and healthy subjects (nOSAS). Methods. 129 children (72 males; mean age 7.64±1.98 years) affected by OSAS w…
THE SYNACTIVE THEORY OF DEVELOPMENT: THE KEYWORD FOR NEURODEVELOPMENTAL DISORDERS
2017
The synactive theory of development may be considered the keyword for neurodevelopmental disorders, considering that each one presents constantly autonomic troubles such as sleep disorders, feeding problems.
EMotional Intelligence And Obstructive Sleep Apnea Syndrome In Children: Preliminary Case-Control Study
2017
Introduction: Obstructive sleep apnea syndrome (OSAS) affects up to 4% of pediatric population, with many co-morbidities in the medium-long term. Functional alterations in prefrontal cortex (PFC) may explain why OSAS impacts aspects such as: executive functions, memory, motor control, attention, visual-spatial skills, learning and mood regulation. Emotional intelligence (EI) is a complex neuropsychological function that could be impaired in many clinical conditions. Aim of the study is to evaluate the difference in emotional intelligence skills among children with OSAS and healthy subjects Materials and methods: 29 children (16 males) mean age 9.5 ± 1.54 years, affected by OSAS were compare…
Sleep habits in children affected by autism spectrum disorders: A preliminary case-control study
2017
Introduction: The core of autism spectrum disorders (ASD) consists of alterations of neurological functions that affect the typical developmental trajectory leading to deficits in social interaction and non-verbal behaviors. In general, ASD is diagnosed at age three and many other frequent neurological signs may be present, such as sleep disorders. The aim of study is evaluating sleep habits in a sample of ASD children. Material and methods: The study population consists of 65 ASD children (43 males and 22 females), aged between 2 and 11 years (mean 5.73 ± 2.39 years). The control group consists of 114 children with typical development (68 males and 46 females), aged between 3 and 10 years …
VISUOMOTOR INTEGRATION SKILLS IN CHILDREN AFFECTED BY OBSTRUCTIVE SLEEP APNEA SYNDROME: A CASE-CONTROL STUDY
2016
Introduction: Sleep related breathing disorders (SRBD) consist of frequent and repetitive episodes of pharyngeal obstruction during sleep, with consequent intermittent hypoxia, sleep architecture fragmentation, daytime sleepiness and/or behavioural problems and executive impairment in children. When untreated, SRBD and obstructive sleep apnea syndrome (OSA) mainly, may impact school performance, cognition, metabolism, and cardiovascular function. Aim of the present study is assessing the visuomotor integration skills in children affected by OSA. Materials and methods: 57 subjects affected by mild-to severe OSA, PSG diagnosed according to international diagnostic criteria, (31 males and 26 f…
Effects of acute CPAP application on baroreflex control of heart rate during sleep in severe obstructive sleep apnea.
2006
Baroreflex control of heart rate during sleep (baroreflex sensitivity; BRS) has been shown to be depressed in obstructive sleep apnoea (OSA), and improved after treatment with continuous positive airway pressure (CPAP). Whether CPAP also acutely affects BRS during sleep in uncomplicated severe OSA is still debatable. Blood pressure was monitored during nocturnal polysomnography in 18 patients at baseline and during first-time CPAP application. Spontaneous BRS was analysed by the sequence method, and estimated as the mean sequence slope. CPAP did not acutely affect mean blood pressure or heart rate but decreased cardiovascular variability during sleep. Mean BRS increased slightly during CPAP…
Application of Inverse-Probability-of-Treatment Weighting to Estimate the Effect of Daytime Sleepiness in Obstructive sleep apnea patients
2022
Continuous positive airway pressure (CPAP), the first line therapy for obstructive sleep apnea (OSA), is considered effective in reducing daytime sleepiness. Its efficacy relies on adequate adherence, often defined as >4 hours per night. However, this binary threshold may limit our understanding of the causal effect of CPAP adherence and daytime sleepiness and multilevel approach for CPAP adherence can be more appropriate.