WHAT IS SLEEP
Most of us know that getting a good night’s sleep is important, but too few of us actually make those eight or so hours a priority.
National Sleep Foundation Scientific Advisory Council summary of the new recommendations for sleep duration:
TAGES OF SLEEP
You cycle through all stages of non-REM and REM sleep several times during a typical night, with increasingly longer, deeper REM periods occurring toward morning.
Two internal biological mechanisms – circadian rhythm and homeostasis – work together to regulate when you are awake and sleep.
Night shift workers often have trouble falling asleep when they go to bed, and also have trouble staying awake at work because their natural circadian rhythm and sleep-wake cycle is disrupted. In the case of jet lag, circadian rhythms become out of sync with the time of day when people fly to a different time zone, creating a mismatch between their internal clock and the actual clock.
Everyone dreams. You spend about 2 hours each night dreaming but may not remember most of your dreams. Its exact purpose isn’t known but dreaming may help you process your emotions. Events from the day often invade your thoughts during sleep, and people suffering from stress or anxiety are more likely to have frightening dreams. Dreams can be experienced in all stages of sleep but usually are most vivid in REM sleep. Some people dream in color, while others only recall dreams in black and white.
Scientist identify parts of brain used in dreaming
It is a term used to describe cumulative sleep loss resulting from ongoing sleep deprivation. A large sleep debt may lead to mental or physical fatigue.
The 5 worst countries for average hours of sleep, in order of worst sleepers, include:
Country-wise Sleep Debt
Symptoms of Sleep Disorders
General symptoms of sleep disorders include:
DIAGNOSIS OF SLEEP DISORDERS
Your doctor will first perform a physical exam and gather information about your symptoms and medical history. They will also order various tests, including:
These tests can be crucial in determining the right course of treatment for sleep disorders.
EEG (ELECTROENCEPHALOGRAPHY) AND QEEG FINDINGS IN SLEEP
Polysomnographic studies that combine EEG brain electrical activity signal with movement, oxygen level and breathing are the gold standard for diagnosis of sleep disorders.
EEG Recording and Analysis for Sleep Research
The electroencephalogram (EEG) is the most common tool used in sleep research. Sample data are provided for a typical night's analysis of EEG during NREM (non-REM) and REM sleep.
Human Sleep and Sleep EEG
Summarizes the basic knowledge from the field of sleep research. The emphasis is on the exploration of the rules of polysomnographic recording and scoring sleep stages as well as on results and opinions about the nature of sleep EEG.
Sleep Stage Classification Using EEG Signal Analysis:A Comprehensive Survey and New Investigation
The limitations of manual sleep stage scoring have escalated the demand for developing Automatic Sleep Stage Classification (ASSC) systems. Sleep stage classification refers to identifying the various stages of sleep and is a critical step to assist physicians in the diagnosis and treatment of related sleep disorders.
Normal Sleep EEG
NREM and REM occur in alternating cycles, each lasting approximately 90-100 minutes, with a total of 4-6 cycles. In general, in the healthy young adult NREM sleep accounts for 75-90% of sleep time (3-5% stage I, 50-60% stage II, and 10-20% stages III and IV). REM sleep accounts for 10-25% of sleep time.
Improve Your Sleep Today