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A sleep study is a test that records the activity of the body during sleep. There are five main types of sleep studies that use different methods to test for different sleep characteristics and disorders. These include simple sleep studies, polysomnography, multiple sleep latency tests (MSLTs), maintenance of wakefulness tests (MWTs), and home ...
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.
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.
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.
Recent studies have also shown that sleep not only helps consolidate memory, but also integrates relational memories. In one study, the participants were tested to see if sleep helped in this aspect (Ellenbogen et al., 2007, as cited in Walker, 2009). The subjects of the experiment were taught five "premise pairs", A>B, B>C, C>D, and D>E.
Sleep is regulated by an internal process known as the circadian rhythm. This 24-hour cycle regulates periods of alertness and tiredness that an individual experiences. [3] The correlation between psychological stress and sleep is complex and not fully understood. [4] In fact, many studies have found a bidirectional relationship between stress ...
Sleep deprivation also has a documented effect on the ability to acquire new memories for subsequent consolidation. A study done on mice that were sleep deprived before learning a new skill but allowed to rest afterward displayed a similar number of errors on later trials as the mice that were sleep deprived only after the initial learning. [46]
Behavioral geography is an approach to human geography that examines human behavior by separating it into different parts. In addition, behavioral geography is an ideology/approach in human geography that makes use of the methods and assumptions of behaviorism to determine the cognitive processes involved in an individual's perception of or response and reaction to their environment.