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It is believed that sleep plays an active role in consolidation of declarative memory. Specifically, sleep's unique properties enhance memory consolidation, such as the reactivation of newly learned memories during sleep. For example, it has been suggested that the central mechanism for consolidation of declarative memory during sleep is the ...
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 weakening process occurs mostly during sleep. This weakening during sleep allows for strengthening of other connections while we are awake. Learning is the process of strengthening connections, therefore this process could be a major explanation for the benefits that sleep has on memory. [14]
As such, the development of secondary consciousness during the lifetime requires a blank consciousness that during REM sleep creates an imaginary self that has movements and experiences emotions. [1] This is an experimental state not associated with awareness, and this state, or protoconscious, is able to be reached during childhood.
Sleep spindles are thought to induce synaptic changes and thereby contribute to memory consolidation during sleep. Here, we examined the role of sleep in the object-place recognition task, a task closely comparable to tasks typically applied for testing human declarative memory: It is a one-trial task, hippocampus-dependent, not stressful and ...
The study showed that declarative learning, memory and retention significantly increased only after an interval of sleep that immediately followed learning. [5] This research provides evidence of sleep in the role of declarative learning, sleep consolidation, as well as stresses the importance of sleep for declarative learning during childhood.
Sleep spindle activity has furthermore been found to be associated with the integration of new information into existing knowledge [17] as well as directed remembering and forgetting (fast sleep spindles). [18] During NREM sleep, the brain waves produced by people with schizophrenia lack the normal pattern of slow and fast spindles. [19]
Sharp waves and ripples (SWRs) are oscillatory patterns produced by extremely synchronised activity of neurons in the mammalian hippocampus and neighbouring regions which occur spontaneously in idle waking states or during NREM sleep. [1] They can be observed with a variety of imaging methods, such as EEG.