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Lower brain oxygen levels caused by sleep apnea were linked to changes to the white matter, which could lead to cognitive problem, a new study suggests. Sleep apnea impacts brain in ways that may ...
Idiopathic hypersomnia (IH) is a neurological disorder which is characterized primarily by excessive sleep and excessive daytime sleepiness (EDS). [1] Idiopathic hypersomnia was first described by Bedrich Roth in 1976, and it can be divided into two forms: polysymptomatic and monosymptomatic.
A few studies have attested that some hormones as prolactin and progesterone could be responsible for Menstrual-Related Hypersomnia. [33] Therefore, different contraceptive pills could improve the symptoms. [33] The sleep architecture changes. [33] There is a decrease of slow-wave sleep and an increase of slow-Theta-wave activity. [33]
Polysomnography (PSG) is a multi-parameter type of sleep study [1] and a diagnostic tool in sleep medicine.The test result is called a polysomnogram, also abbreviated PSG.The name is derived from Greek and Latin roots: the Greek πολύς (polus for "many, much", indicating many channels), the Latin somnus ("sleep"), and the Greek γράφειν (graphein, "to write").
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Disruptions or irregularities to the normal sleep cycle or sleep stage transitions can be detected; for example a hypnogram can show that in obstructive sleep apnea (OSA) the stability of transition between REM and NREM stages is disrupted. [10] The effects of certain medications on sleep architecture can be visualised on a hypnogram.
A review of 20 studies on brainwave entrainment found that it is effective in improving cognition and behavioral problems, and alleviating stress and pain. [9] The results of a study on children with attention-deficit disorder found that AVE was more effective than neurofeedback for treating ADD symptoms. [10]
They are generated in widespread cortical locations [1] though they tend to predominate over the frontal parts of the brain. [5] Both K-complex and delta wave activity in stage 2 sleep create slow-wave (0.8 Hz) and delta (1.6–4.0 Hz) oscillations. However, their topographical distribution is different, and the delta power of K-complexes is ...