Allan Rechtschaffen (b. 1927) is a noted pioneer[1][2] in the field of sleep research whose work includes some of the first laboratory studies of insomnia, narcolepsy, sleep apnea, and napping. He received his PhD from Northwestern University in 1956.[3]. He has done research in the effects on sleep of exercise, mental work, stimulation, stress, and metabolism, as well as the effects of sleep deprivation. He also looked at sleep in reptiles and rats.. Dr. Rechtschaffen and Gerry Vogel, working with colleagues at Mt. Sinai Hospital in New York including Dr. William Dement, described narcolepsy-the first scientifically demonstrated sleep disorder-in a landmark paper in 1963.[1] Dr. Rechtschaffen went on to perform experiments in rats that demonstrated the lethal consequences of long-term (two weeks or more) sleep deprivation and REM sleep deprivation.. He worked with Anthony Kales in developing the still-used criteria used by sleep laboratories to report human sleep scale data. The system is ...
Sleep is not just a passive process, but rather a highly dynamic process that is terminated by waking up. Throughout the night a specific number of sleep stages that are repeatedly changing in various periods of time take place. These specific time intervals and specific sleep stages are very important for the wake up event. It is far more difficult to wake up during the deep NREM (2-4) stage of sleep because the rest of the body is still sleeping. On the other hand if we wake up during the mild (REM, NREM1) sleep stage it is a much more pleasant experience for us and for our bodies. This problem led the authors to undertake this study and develop a Windows Mobile-based device application called wakeNsmile. The wakeNsmile application records and monitors the sleep stages for specific amounts of time before a desired alarm time set by users. It uses a built-in microphone and determines the optimal time to wake the user up. Hence, if the user sets an alarm in wakeNsmile to 7:00 and wakeNsmile detects that
Sleep Stages Wyatt Rynearson B2 The first stage is the lightest stage of sleep the transition phase where you feel yourself drifting off. Stage 1 sleep
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Electroencephalography (EEG) is used to measure brainwave activity. Along with EMG and EOG, EEG is used to determine which stage of sleep a person is in. When various physiological measures are taken at the same time to assess sleep stage, this is called polysomnography.
Dreamviews is the largest Lucid Dreaming Community and Resource on the web. All about lucid dreaming, controlling dreams, sleep stages, dream signs, dream interpretation and more.
Dreamviews is the largest Lucid Dreaming Community and Resource on the web. All about lucid dreaming, controlling dreams, sleep stages, dream signs, dream interpretation and more.
Last night was my first night alone since Tiffanys passing. I miss her. Because I had a dinner appointment with work I didnt get home till 8:30 so that made the night go quicker. Honestly, I think the day was worse anticipating the night than the actual night was. It was not a night of emotional breakdowns but rather it was another step in the finality of my life situation that Tiffany is no longer here. How weird it was to drive up to my house at 8:30 p.m. with having not been at the house since I left for work in the morning. I could never do that before if I was going to properly take care of Tiffany these last six months or it would have meant that she would not eat till 9 p.m. My schedule change so far has been one of the biggest changes. CF took up so much time in our life. It was not something that was despised or to be mad about it, it simply was our life. I also see now that my life choices have to be much more deliberate because before Tiffanys health would dictate so many of our ...
What is drowsiness? Learn about the symptoms, causes, treatments and remedies for drowsiness, and how it is defined. How to prevent drowsy driving and improve alertness.
Could Progesterone cause Drowsiness? We studied 7,666 Progesterone users who have side effects from FDA and eHealthme. Among them, 149 have Drowsiness. See what we found.
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She only ate two full bottles the rest she just nibbled on. 1/2 to 1 oz. A little frustrating. She gets a little fussy when its time for her Tylenol but other then that shes been pretty happy and back to being a little stinker. Its surprising how well shes acting and playing so soon after surgery. It blows my mind ...
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Looking for online definition of Dysfunctions associated with sleep, sleep stages or partial arousal in the Medical Dictionary? Dysfunctions associated with sleep, sleep stages or partial arousal explanation free. What is Dysfunctions associated with sleep, sleep stages or partial arousal? Meaning of Dysfunctions associated with sleep, sleep stages or partial arousal medical term. What does Dysfunctions associated with sleep, sleep stages or partial arousal mean?
OBJECTIVES: To define normal values for total sleep time, sleep latency, sleep efficiency, sleep stages and sleeping positions in women and to investigate how sleep is affected by age, obesity, sleep apnea, smoking, alcohol dependency and hypertension. METHODS: In a population-based study, 400 Swedish women aged 20-70 years with over-sampling of snorers were investigated using overnight in-home polysomnography. All results are weighted. RESULTS: The mean normal total sleep time was 392 min, sleep latency 22 min and sleep efficiency 82%. Women spent 31 min in sleep stage 1, 244 min in stage 2, 41 min in stage 3/4 and 76 min in rapid eye movement (REM) sleep. They spent 41% of their sleep time in the supine position, 50% in the lateral position and 9% in the prone position. Multivariate analyses revealed that sleep efficiency was lower in older women and in women with hypertension. Sleep latency was short in women with severe sleep apnea and long in smokers, alcohol-dependent and hypertensive ...
,Polysomnography is the monitoring of various physiologic parameters simultaneously during sleep, including the following: ▪ EEG: standard electrodes are used (see , Electroencephalographic Terms) ▪ Electro-oculogram (EOG): tracings are obtained from the left eye and right eye ▪ Electromyogram (EMG): submental (chin) EMG, leg muscle EMG, eg, left anterior tibialis, right anterior tibialis ▪ Respiratory function, eg, oxygen saturation (SaO2), expired CO2, and tidal volume (Vt) (see , Pulmonary, Respiratory, and Blood Gas Terminology) ▪ Electrocardiogram (ECG): see , Cardiology, Electrocardiographic Terms Sleep stages are as follows: rapid-eye movement sleep (REM sleep) non-rapid eye movement (non-REM) sleep (NREM sleep) sleep
,Polysomnography is the monitoring of various physiologic parameters simultaneously during sleep, including the following: ▪ EEG: standard electrodes are used (see , Electroencephalographic Terms) ▪ Electro-oculogram (EOG): tracings are obtained from the left eye and right eye ▪ Electromyogram (EMG): submental (chin) EMG, leg muscle EMG, eg, left anterior tibialis, right anterior tibialis ▪ Respiratory function, eg, oxygen saturation (SaO2), expired CO2, and tidal volume (Vt) (see , Pulmonary, Respiratory, and Blood Gas Terminology) ▪ Electrocardiogram (ECG): see , Cardiology, Electrocardiographic Terms Sleep stages are as follows: rapid-eye movement sleep (REM sleep) non-rapid eye movement (non-REM) sleep (NREM sleep) sleep
... - Sleep has important physical, mental and regenerative purposes. However, many people experience problems getting to sleep, waking in the middle of the night, or waking early and not being able to get back to sleep. We move in and out of between 4 and 5 cycles of specific sleep stages each night. Movement through each cycle takes approximately 90 minutes. Each stage in the sleep cycle regenerates specific systems of the body and mind. Non-REM (Rapid Eye Movement) Sleep Stage 1 - During this stage you become drowsy, your thoughts become incoherent and you may feel like your are floating or falling. Stage 2 - This is a stage of quiet readiness. In this stage you can wake up quite easily and will be awoken by soft noises or movement. Stage 3 - The brain and body are beginning to relax and you settle into a deeper sleep Stage 4 - A sound sleep. 40% of the usual blood flow to the brain is diverted to the muscles to restore energy. This is when you
TY - JOUR. T1 - Performance of the frequency domain indices with respect to sleep staging. AU - Kuo, Terry B J. AU - Chen, C. Y.. AU - Hsu, Ya Chuan. AU - Yang, Cheryl C H. PY - 2012/7. Y1 - 2012/7. N2 - Objective: To compare computerized staging using spectral analyses of various electrophysiological signals with manual sleep staging. Methods: Sleep recordings from 21 normal subjects were scored by an experienced rater and by a dichotomous algorithm. The performance of the spectral indices was assessed by the largest kappa value (LKV). Results: Theta/beta power ratio of the electroencephalogram, high frequency power (8-58. Hz) of the electromyogram (PEMG), mean R-R interval, and total power (0-16. Hz) of the body acceleration (PACCE) had high (,0.5) LKVs when differentiating between waking and sleep. To differentiate sleep with (stage 2 and slow wave sleep) and without (rapid eye movement and stage 1 sleep) spindles, sigma/beta power ratio had high LKVs. PEMG had a medium (,0.25) LKV to ...
A sleep efficiency monitor and methods for pacing and leading a sleeper through an optimal sleep pattern. Embodiments of the present invention include a physiological characteristic monitor (14) for monitoring the sleep stages of a sleeper, a sensory stimulus generator (16) for generating stimulus to affect the sleep stages of a sleeper, and a processor (12) for determining what sleep stage the sleeper is in and what sensory stimulus is needed to cause the sleeper to move to another sleep stage. A personalized sleep profile may also be established for the sleeper and sleep guided in accordance with the profile parameters to optimize a sleep session.
If you had waited until the end of your baby sleep cycle, you would have been easier to awaken because you would have completed the cycle and gone back into a period of light sleep.. For an infant, the sleep cycle lasts only an hour or less. This means that an infant is in a period of light sleepâ€"and vulnerable to being awakenedâ€"about every 50 to 60 minutes. Sometimes a gentle word or a pat on the back when your baby is stirring during light sleep is enough to help them stay asleep.. These periods of light sleep at night are actually beneficial to baby. Your baby can only communicate with you when she is awake. If she slept deeply during the night, she couldnt cry to let you know she was hungry, wet, or had some other need that only you could meet for her.. By having longer and more frequent periods of light sleep, your baby can let you know when she needs your help. Perhaps the baby blanket is too near her face and she is having trouble breathing; if she is sleeping too deeply, she ...
How much deep sleep you get each night is directly related to how rested you feel the following morning. Learn how this slow-wave sleep stage is central for your health and wellbeing.
Learn the stages of sleep and how much sleep a person should get each night. If you do not sleep enough, you may have a sleep debt.
Class 3] CAP Sleep Database. The Cyclic Alternating Pattern (CAP) is a periodic EEG activity occurring during NREM sleep, and abnormal amounts of CAP are associated with a variety of sleep-related disorders. The CAP Sleep Database is a collection of 108 polysomnographic recordings from the Sleep Disorders Center of the Ospedale Maggiore of Parma, Italy. Each record includes 3 or more EEG signals together with EOG, chin and tibial EMG, airflow, respiratory effort, SaO2, and ECG signals, and reference sleep stage and CAP annotations, This database is intended to provide a useful number of carefully annotated examples of CAP in a representative variety of pathophysiologic contexts, for development and evaluation of automated CAP analyzers, as well as to support basic studies of the dynamics of CAP ...
This paper presents a non-intrusive approach for monitoring driver drowsiness using the fusion of several optimized indicators based on driver physical and driving performance measures, obtained from ADAS (Advanced Driver Assistant Systems) in simulated conditions. The paper is focused on real-time drowsiness detection technology rather than on long-term sleep/awake regulation prediction technology. We have developed our own vision system in order to obtain robust and optimized driver indicators able to be used in simulators and future real environments. These indicators are principally based on driver physical and driving performance skills. The fusion of several indicators, proposed in the literature, is evaluated using a neural network and a stochastic optimization method to obtain the best combination. We propose a new method for ground-truth generation based on a supervised Karolinska Sleepiness Scale (KSS). An extensive evaluation of indicators, derived from trials over a third generation
Every exposure to caffeine can produce cerebral stimulant effects. This is especially true in the areas that control locomotor activity (eg, caudate nucleus) and structures involved in the sleep-wake ... more
Study Goals: To find out whether thalamocortical signaling between your thalamus as well as the neocortex reduces from wakefulness to nonrapid eyes movement (NREM) rest. results for gradual wave rest. Conclusions: Results of the study provide proof an operating deafferentation from the neocortex during nonrapid eyes movement (NREM) rest in human beings. This deafferentation most likely accounts for improved sensory understanding thresholds during Calcitriol (Rocaltrol) NREM rest. Reduced thalamocortical online connectivity in locations like the posterior cingulate/precuneus are found in coma and general anesthesia also, suggesting that adjustments in thalamocortical online connectivity may become a general control change for adjustments in awareness that are found in coma, general anesthesia, and organic rest. Citation: Picchioni D; Pixa ML; Fukunaga M; Carr WS; Horovitz SG; Braun AR; Duyn JH. Reduced connectivity between your thalamus as well as the neocortex during individual nonrapid eyes ...
The headband has 3 electrodes on the forehead like NeuroOn and used an Fp1-Fp2 bipolar recording montage (two standard left and right frontopolar sites on the forehead). EEG recorded here is particularly prone to artifacts from eye movements and muscle activity and is thus a mixture of all these signals. Analytic techniques such as independent component analysis (ICA) try to separate the sources. The Zeo group used some sort of training algorithm that used "a combination of time and frequency dependent features derived from the signal to create a best estimate of sleep stage." Interestingly, they had to filter out the very low frequencies (below 2 Hz) that comprise much of the delta wave activity seen during slow wave sleep. This was because of contamination by excessive noise in the low frequency range ...
NREM occurs for approximately 75% of the night and is composed of four stages. Stage one is just between being awake and falling asleep, during which you are in a light sleep. Stage two is the true onset of sleep where you become disengaged from the surroundings and your breathing and heart rate become regular. Your body temperature drops, and so sleep is often easier in a cooler room. (My husband likes this fact because it means he can keep the heater down low so as not to waste money.) Stages three and four are the most restorative sleep stages, where the blood pressure drops, breathing slows further, and muscles relax. The blood flow to the muscles increases, tissue growth and repair begins, and energy is restored. Hormones like growth hormone are released that play a vital role in growth and development ...
A lack of deep sleep may be one of the reasons why people develop high blood pressure. A study of older men published Monday found that those who got the least amount of deep sleep were 80% more likely to develop high blood pressure, compared to those who got longer, less interrupted sleep.
Anatomical functionality is a major topic in brain research. Numerous investigations have shown task dependent activation of focal brain areas, with most information based on time-averaged data due to methodological limitations. Ultra-fast quantitative EEG, especially in the newly developed combination with eye tracking (EnkephaloVision), is very suitable to follow activities of local electric circuits. This investigation in 57 subjects revealed transient focal frequency changes reaching up to more than 6000% of global median spectra power during cognitive and emotional challenges at frontal electrode positions. Recording epochs of 364 ms uncovered coherences with respect to focal brain areas and single frequencies, which are typically lost during averaged calculations. When averaging data over a whole scene, a least demanding challenge like viewing a boring animal video only activated the lateral frontal lobe, whereas solving brain-teasers and performance of mathematical calculations led to delta
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What causes a lack of deep sleep? Consider quality sleep benefits, how to determine if you get enough, causes of light sleep, and potential harms.
Top differentially expressed miRNAs at early neural progenitor stage transitions.Fold change values (log2) and expression profiles of the top ten downregulated
Insomnia and sleep deprivation is a common lifestyle problem faced by most of the people in todays fast paced life. Veda Essence Deep Sleep Relaxation Oil is a
The number of people struggling to lose weight in America and all over the world is staggering. Many consumers are fed up with watching wasted efforts reveal any meaningful results or noticeable effects. Formulated by John Barban, Resurges ingredients analyzed below will give a take-home deep-dive on whats inside the most popular supplement on the market today. The Resurge deep sleep supplement is set out to replace a smorgasbord of supplements in the medicine cabinet because of its unique story, ingredient sourcing and dosing.. When it comes to both fat- and weight loss, consumers, for the most part, mostly abide by clean eating and vigorous exercise. Unfortunately, there are more factors that might come into play, with the most significant one being sleep as John Barban says it should be the number one priority when it comes to weight loss.. With sleep deprivation comes ones need to find the most comforting way to shoot energy levels. Generally speaking, this usually entails consuming junk ...
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During deep sleep, the brain may be tidying up the detritus that accumulates during a hard day of thinking, a recent study suggests.
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Prediction of drowsiness based on an objective measure is demanded in machine and vehicle operations, in which human error may cause fatal accidents. Recently, we focused on the pupil which is controlled by the autonomic nervous system, easily and non-invasively observable from the outside of the body.Prior to the large low frequency pupil-diameter fluctuation, which is known to associate with drowsiness, a Gradual Miosis was observed in most subjects. During this miosis period, the subjects were not yet aware of their drowsiness. We have developed a software system which automatically detects the Gradual Miosis in real time ...
sleepiness - MedHelps sleepiness Center for Information, Symptoms, Resources, Treatments and Tools for sleepiness. Find sleepiness information, treatments for sleepiness and sleepiness symptoms.
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Question - High BP. Prescribed Metasartan 50, having indigestion, drowsiness. Lipids, ECG, ECHO test normal. Necessary to take medication?. Ask a Doctor about diagnosis, treatment and medication for Drowsiness, Ask a Cardiologist
Question - Taking Oxetol. Should I take higher dose or will it cause drowsiness?. Ask a Doctor about diagnosis, treatment and medication for Drowsiness, Ask an Internal Medicine Specialist
Portneuf Grille & Lounge: best hand cut steaks I have ever had, had to go back the second night just to make sure, and was once again amazed. - See 110 traveler reviews, 25 candid photos, and great deals for Lava Hot Springs, ID, at TripAdvisor.