Is the role of sleep in memory consolidation overrated?

被引:9
作者
Dastgheib, Mohammad [1 ]
Kulanayagam, Asvini [1 ]
Dringenberg, Hans C. [1 ]
机构
[1] Queens Univ, Dept Psychol, Kingston, ON K7L 3N6, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Sleep; Memory consolidation; Electroencephalogram (EEG); Reactivation; Replay; Wakefulness; Synaptic plasticity; SHARP-WAVE RIPPLES; ACETYLCHOLINE-RELEASE; VISUAL-CORTEX; SENSORY STIMULATION; BRAIN-STIMULATION; DEPENDENT MEMORY; SPATIAL MEMORIES; EPISODIC MEMORY; BRIEF PERIODS; LOW-FREQUENCY;
D O I
10.1016/j.neubiorev.2022.104799
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Substantial empirical evidence suggests that sleep benefits the consolidation and reorganization of learned information. Consequently, the concept of "sleep-dependent memory consolidation" is now widely accepted by the scientific community, in addition to influencing public perceptions regarding the functions of sleep. There are, however, numerous studies that have presented findings inconsistent with the sleep-memory hypothesis. Here, we challenge the notion of "sleep-dependency" by summarizing evidence for effective memory consolidation independent of sleep. Plasticity mechanisms thought to mediate or facilitate consolidation during sleep (e.g., neuronal replay, reactivation, slow oscillations, neurochemical milieu) also operate during non-sleep states, particularly quiet wakefulness, thus allowing for the stabilization of new memories. We propose that it is not sleep per se, but the engagement of plasticity mechanisms, active during both sleep and (at least some) waking states, that constitutes the critical factor determining memory formation. Thus, rather than playing a "critical" role, sleep falls along a continuum of behavioral states that vary in their effectiveness to support memory consolidation at the neural and behavioral level.
引用
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页数:11
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