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The Epworth Sleepiness Scale has been used to compare the sensitivity and specificity of other similar measurements of sleep quality. [8] [9] The Pittsburgh Sleep Quality Index is a related scoring tool of sleep quality. Both scores are internally highly reproducible. [10] The test has limitations that can affect the test's accuracy.
Shows convergent validity with other symptom scales such as ESS and Karolinska Sleepiness Scale, [6] prediction of performance after sleep deprivation [4] Discriminative validity: Adequate: Studies do not report AUCs, some mention overlap between sleepiness, physical tiredness, and depression [4] Validity generalization: Good
The studies eventually led Dement and Carskadon to conclude that "the brain keeps an exact accounting of how much sleep it is owed". [1]: 60 Not getting enough sleep during any given period of time leads to a phenomenon called sleep debt, which lowers sleep latency scores and makes sleep-deprived individuals fall asleep more quickly.
Young woman asleep over study materials. The relationship between sleep and memory has been studied since at least the early 19th century.Memory, the cognitive process of storing and retrieving past experiences, learning and recognition, [1] is a product of brain plasticity, the structural changes within synapses that create associations between stimuli.
One of the important questions in sleep research is clearly defining the sleep state. This problem arises because sleep was traditionally defined as a state of consciousness and not as a physiological state, [14] [15] thus there was no clear definition of what minimum set of events constitute sleep and distinguish it from other states of partial or no consciousness.
A score of 6 or higher is used to establish the diagnosis of insomnia. [ 2 ] The Athens insomnia scale is considered to be an effective tool in sleep analysis, and it is validated in various countries by testing it on local patients.
Advanced Placement (AP) Psychology (also known as AP Psych) and its corresponding exam are part of the College Board's Advanced Placement Program. This course is tailored for students interested in the field of psychology and as an opportunity to earn Advanced Placement credit or exemption from a college -level psychology course.
The Pittsburgh Sleep Quality Index (PSQI) is a well-validated and widely used self-report questionnaire that measures sleep quality. [42] Nineteen items are combined to create seven component scores of sleep, and those component scores are then used to create an overall “global score” of sleep quality.