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Memory consolidation is a category of processes that stabilize a memory trace after its initial acquisition. [1] A memory trace is a change in the nervous system caused by memorizing something. Consolidation is distinguished into two specific processes.
Consolidation of a memory is a process that takes an initially unstable representation and encodes it in a more sturdy, effective and efficient manner. In this new state, the memory is less susceptible to interference. [1] There are essentially three phases of memory consolidation and all are thought to be facilitated by sleep or not sleep:
During the acquisition process, stimuli are committed to short term memory. [1] Then, consolidation is where the hippocampus along with other cortical structures stabilize an object within long term memory, which strengthens over time, and is a process for which a number of theories have arisen to explain the underlying mechanism. [1]
“Deep sleep, specifically slow-wave sleep, plays a crucial role in memory consolidation — the process of stabilizing and strengthening newly acquired memories. This study highlights possible ...
This slow process, referred to as consolidation, allows emotions to influence the way the memory is stored. [7] The amygdala is involved in memory consolidation, which is the process of transferring information that is currently in working memory into ones long-term memory. This process is also known as memory modulation. [7]
During night sleep, REM sleep and slow-wave sleep both contribute to the motor memory consolidation process through an increase in neuromodulatory activity, as well as regular field potential oscillations such as sleep spindles (reviewed by Diekelmann and Born, 2010 [11]).
The brain’s ability to separate these two sleep substages is crucial in preventing “catastrophic forgetting”, or the consolidation of one memory at the expense of another, researchers say.
Learning is the process of strengthening connections, therefore this process could be a major explanation for the benefits that sleep has on memory. [14] Research has shown that taking an afternoon nap increases learning capacity. A study [15] tested two groups of subjects on a nondeclarative memory task. One group engaged in REM sleep, and one ...