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In individuals deprived of sleep, somnolence may spontaneously dissipate for short periods of time; this phenomenon is the second wind, and results from the normal cycling of the circadian rhythm interfering with the processes the body carries out to prepare itself to rest. The word "somnolence" is derived from the Latin "somnus" meaning "sleep".
Deficient sleep patterns are prominent in many psychiatric ailments. [18] Insomnia increases the risk of a depressive episode, sleep deprivation influences the onset of hypomania, and sleep disturbance contributes to the maintenance of mood disorders. [19] Amongst manic bipolar patients, sleep loss may act as a trigger in the onset of a manic ...
While nature often improves our mood, it can worsen it as well. There is a common mood disorder called Seasonal Affective Disorder (SAD) that often occurs during the winter months when there is less daylight and it is colder outside. SAD is characterized by depressed mood, increased appetite, and increased sleep. [21]
Sleep is a state of reduced mental and physical activity in which ... skeletal, and muscular systems; [3] these are vital processes that maintain mood ...
Sleep deprivation can have a negative impact on mood. [55] Staying up all night or taking an unexpected night shift can make one feel irritable. Once one catches up on sleep, one's mood will often return to baseline or normal. Even partial sleep deprivation can have a significant impact on mood.
While benzodiazepines can put people to sleep (i.e., inhibit NREM stage 1 and 2 sleep), while asleep, the drugs disrupt sleep architecture: decreasing sleep time, delaying time to REM sleep, and decreasing deep slow-wave sleep (the most restorative part of sleep for both energy and mood). [81] [82] [83]
Mania is a state abnormally elevated arousal, affected, and energy level. As mania intensifies, irritability can be more pronounced and result in anxiety or violence. Mania symptoms are elevated mood, flights of ideas, pressure of speech, increased energy, decreased need or desire for sleep, and hyperactivity.
This is particularly apparent in the right hemisphere. In non-sleep-deprived people involved in verbal learning and arithmetic tasks, the anterior cingulate cortex and the right prefrontal cortex are active. Following sleep deprivation, there is increased activation of the left inferior frontal gyrus and the bilateral parietal lobes. This ...