The Roles of NREM and REM Sleep On Memory Consolidation

Role of NREM and REM sleep in memory consolidation Although all mammals exhibit rapid eye movements or sleep, this type of sleep appears to be undesirable at some levels. During REM sleep, when most dreams occur, the brain consumes more energy than during non-REM sleep. (1) Due to physical paralysis at the moment, this energy "waste" and increased vulnerability of this condition should have a very important cause or cause of the presence of REM sleep and dream expansion It shows that. .

REM sleep and slow wave sleep play different roles in memory consolidation. REM is associated with the integration of non-declarative (recessive) memory. An example of non-declarative memory is a task that you can achieve without consciously thinking, such as riding a bicycle. Slow wave or non-REM (NREM) sleep is associated with a declarative (explicit) memory combination. These are the facts that you need to remember consciously, such as the date of lesson in history. A general saying can reflect the memory re-invention to create a new concept of creative association in the morning and the performance usually improves after a time interval including sleep. According to current research, healthy sleep greatly improves learning dependent performance.

Reports from human studies indicate that there is separation between different sleep stages and different types of memory consolidation. In the "double hypothesis" of sleep, NREM sleep is involved in improving declarative memory consolidation, but REM sleep plays a more important role in procedural and emotional memory consolidation (Gais and Born 2004) . Declarative memory depends on hippocampus and programmed memory depends on striatum and cerebellar function (Squire et al., 1993; Doyon et al., 2003). Early studies showed that NREM sleep improves human declarative memory. In the first study investigating the role of NREM sleep in declarative tasks, people learned the language matching companion task before sleeping. These subjects showed higher memory than subjects trained before the REM sleep ratio was higher (Yaroush et al., 1973).