The Memory Function of Sleep

Chambers, Alexis M.; Payne, Jessica D.

doi:10.1002/9781118332634.ch11

Cited by 4 publications

References 74 publications

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A failure of sleep-dependent consolidation of visuoperceptual procedural learning in young adults with ADHD

et al. 2022

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ADHD has been associated with cortico-striatal dysfunction that may lead to procedural memory abnormalities. Sleep plays a critical role in consolidating procedural memories, and sleep problems are an integral part of the psychopathology of ADHD. This raises the possibility that altered sleep processes characterizing those with ADHD could contribute to their skill-learning impairments. On this basis, the present study tested the hypothesis that young adults with ADHD have altered sleep-dependent procedural memory consolidation. Participants with ADHD and neurotypicals were trained on a visual discrimination task that has been shown to benefit from sleep. Half of the participants were tested after a 12-h break that included nocturnal sleep (sleep condition), whereas the other half were tested after a 12-h daytime break that did not include sleep (wakefulness condition) to assess the specific contribution of sleep to improvement in task performance. Despite having a similar degree of initial learning, participants with ADHD did not improve in the visual discrimination task following a sleep interval compared to neurotypicals, while they were on par with neurotypicals during the wakefulness condition. These findings represent the first demonstration of a failure in sleep-dependent consolidation of procedural learning in young adults with ADHD. Such a failure is likely to disrupt automatic control routines that are normally provided by the non-declarative memory system, thereby increasing the load on attentional resources of individuals with ADHD.

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A failure of sleep-dependent consolidation of visuoperceptual procedural learning in young adults with ADHD

et al. 2022

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A Computational Model of Hippocampus: A Unified Theory About Engram and Sharp-Ware Ripples

Zishuo

2023

Preprint

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The hippocampus is key to memory encoding, consolidation, and retrieval. Previous work shows that neurons in the hippocampus fire in sequence to encode spatial information. The same group of cells will replay in memory consolidation, coupled with ripples, spindle, and slow waves. As for episodic memory, engram cells have been proposed to explain the encoding and transformation of episodic memory. Another universe theory about memory is the cognitive map theory. Here I use cognitive map theory as the bridge to overcome the gap between spatial and episodic memory. I believe spatial memory is a highly compressed case of episodic memory. In addition, I propose the hypothesis that engram can trigger sharp-wave ripples. I use a spike neural network-based computational model to verify this hypothesis. In conclusion, I believe engram cells and sharp-wave ripples are two different phenomena under a unified memory system.

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Predicting sleep hygiene: a reasoned action approach

Tagler

Stanko

Forbey

2016

J Applied Social Pyschol

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Poor and insufficient sleep causes physical, cognitive, emotional, and social impairments. Unfortunately, little is known about the social‐cognitive predictors of daily sleep habits. The current study examined if sleep hygiene could be predicted using the Reasoned Action Model (Fishbein & Ajzen, ). Across four studies, the model performed well for the prediction of intentions (R2s = .63–.75), and also significantly predicted both self‐reported (R2 = .15) and actigraphy‐recorded sleep duration (R2 = .11). The results from these studies support the further use of the model toward the goal of designing effective sleep hygiene interventions.

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The Memory Function of Sleep

Cited by 4 publications

References 74 publications

A failure of sleep-dependent consolidation of visuoperceptual procedural learning in young adults with ADHD

A failure of sleep-dependent consolidation of visuoperceptual procedural learning in young adults with ADHD

A Computational Model of Hippocampus: A Unified Theory About Engram and Sharp-Ware Ripples

Predicting sleep hygiene: a reasoned action approach

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