scholarly journals EEG sigma and slow-wave activity during NREM sleep correlate with overnight declarative and procedural memory consolidation

2012 ◽  
Vol 21 (6) ◽  
pp. 612-619 ◽  
Author(s):  
JOHANNES HOLZ ◽  
HANNAH PIOSCZYK ◽  
BERND FEIGE ◽  
KAI SPIEGELHALDER ◽  
CHIARA BAGLIONI ◽  
...  
Keyword(s):  
Slow Wave ◽  
Memory Consolidation ◽  
Nrem Sleep ◽  
Procedural Memory ◽  
Wave Activity ◽  
Slow Wave Activity

K-complexes and slow wave activity during nrem sleep in patients with Alzheimer's disease

2017 ◽  
Vol 40 ◽  
pp. e115-e116
Author(s):  
M. Gorgoni ◽  
F. Reda ◽  
G. Lauri ◽  
I. Truglia ◽  
S. Cordone ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Slow Wave ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Slow Wave Activity

scholarly journals Cross-hemispheric Alternating Current Stimulation During a Nap Disrupts Slow Wave Activity and Associated Memory Consolidation

2015 ◽  
Vol 8 (3) ◽  
pp. 520-527 ◽  
Author(s):  
Peter Garside ◽  
Joseph Arizpe ◽  
Chi-Ieong Lau ◽  
Crystal Goh ◽  
Vincent Walsh
Keyword(s):  
Slow Wave ◽  
Memory Consolidation ◽  
Alternating Current ◽  
Wave Activity ◽  
Slow Wave Activity

scholarly journals Dynamics of Slow-Wave Activity During the NREM Sleep of Sleepwalkers and Control Subjects

SLEEP ◽  
2000 ◽  
Vol 23 (6) ◽  
pp. 1-6 ◽  
Author(s):  
Hélène Gaudreau ◽  
Steve Joncas ◽  
Antonio Zadra ◽  
Jacques Montplaisir
Keyword(s):  
Slow Wave ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Slow Wave Activity ◽  
Control Subjects ◽  
And Control

scholarly journals Age-related changes in slow wave activity rise time and NREM sleep EEG with and without zolpidem in healthy young and older adults

2014 ◽  
Vol 15 (9) ◽  
pp. 1037-1045 ◽  
Author(s):  
Evan D. Chinoy ◽  
Danielle J. Frey ◽  
Daniel N. Kaslovsky ◽  
Francois G. Meyer ◽  
Kenneth P. Wright
Keyword(s):  
Older Adults ◽  
Slow Wave ◽  
Rise Time ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Slow Wave Activity ◽  
Sleep Eeg ◽  
Age Related ◽  
Age Related Changes

scholarly journals Relationship of sleep homeostasis to seizures and cognition in children with focal epilepsy

2020 ◽  
Author(s):  
Maria H Eriksson ◽  
Torsten Baldeweg ◽  
Ronit Pressler ◽  
Stewart G Boyd ◽  
Reto Huber ◽  
...  
Keyword(s):  
Slow Wave ◽  
Focal Epilepsy ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Slow Wave Activity ◽  
Iq Testing ◽  
Sleep Homeostasis ◽  
Interictal Discharges ◽  
Relationship Of ◽  
The Relationship

AbstractObjectiveSleep disruption and cognitive impairment are important co-morbidities in childhood epilepsy, yet a mechanistic link has not been substantiated. Slow wave activity during sleep and its homeostatic decrease across the night is associated with synaptic renormalisation, and shows maturational changes over the course of childhood. Here, we aimed to investigate the effect of epilepsy on sleep homeostasis in the developing brain.MethodsWe examined the relationship of sleep homeostasis as reflected in slow wave activity to seizures, cognition and behaviour, comparing 22 children (aged 6 to 16 years) with focal epilepsy to 21 age-matched healthy controls. Participants underwent overnight sleep EEG and IQ testing and performed memory consolidation tasks. Their parents completed standard behavioural questionnaires.ResultsChildren with epilepsy had lower slow wave activity at the start of non-rapid eye movement (NREM) sleep, though similar overnight decline and slow wave activity in the final hour of NREM sleep. Both groups displayed an antero-posterior shift in peak slow wave activity overnight, though individual patients showed persistent local increases at scalp locations matching those of focal interictal discharges. Patients who had seizures during their admission had lower early-night slow wave activity, the group without seizures showing similar activity to controls. We found a positive correlation between full scale IQ and early-night slow wave activity in patients but not controls.InterpretationReduced early night slow wave activity in children with focal epilepsies is correlated with lower cognitive ability and more seizures and may reflect a reduction in learning-related synaptic potentiation.

Deep sleep after social stress: NREM sleep slow-wave activity is enhanced in both winners and losers of a conflict

2015 ◽  
Vol 47 ◽  
pp. 149-154 ◽  
Author(s):  
Jeanine Kamphuis ◽  
Marike Lancel ◽  
Jaap M. Koolhaas ◽  
Peter Meerlo
Keyword(s):  
Slow Wave ◽  
Social Stress ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Slow Wave Activity ◽  
Deep Sleep

Slow-wave activity in NREM sleep: sex and age effects in depressed outpatients and healthy controls

2000 ◽  
Vol 95 (3) ◽  
pp. 201-213 ◽  
Author(s):  
Roseanne Armitage ◽  
Robert Hoffmann ◽  
Madhukar Trivedi ◽  
A.John Rush
Keyword(s):  
Slow Wave ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Age Effects ◽  
Slow Wave Activity ◽  
Healthy Controls ◽  
Sleep Sex

scholarly journals Visual imagery and visual perception induce similar changes in occipital slow waves of sleep

2019 ◽  
Vol 121 (6) ◽  
pp. 2140-2152 ◽  
Author(s):  
Giulio Bernardi ◽  
Monica Betta ◽  
Jacinthe Cataldi ◽  
Andrea Leo ◽  
José Haba-Rubio ◽  
...  
Keyword(s):  
Visual Perception ◽  
Eye Movement ◽  
Slow Wave ◽  
Visual Imagery ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Slow Waves ◽  
Slow Wave Activity ◽  
Short Term ◽  
Visual Areas

Previous studies have shown that regional slow-wave activity (SWA) during non-rapid eye movement (NREM) sleep is modulated by prior experience and learning. Although this effect has been convincingly demonstrated for the sensorimotor domain, attempts to extend these findings to the visual system have provided mixed results. In this study we asked whether depriving subjects of external visual stimuli during daytime would lead to regional changes in slow waves during sleep and whether the degree of “internal visual stimulation” (spontaneous imagery) would influence such changes. In two 8-h sessions spaced 1 wk apart, 12 healthy volunteers either were blindfolded while listening to audiobooks or watched movies (control condition), after which their sleep was recorded with high-density EEG. We found that during NREM sleep, the number of small, local slow waves in the occipital cortex decreased after listening with blindfolding relative to movie watching in a way that depended on the degree of visual imagery subjects reported during blindfolding: subjects with low visual imagery showed a significant reduction of occipital sleep slow waves, whereas those who reported a high degree of visual imagery did not. We also found a positive relationship between the reliance on visual imagery during blindfolding and audiobook listening and the degree of correlation in sleep SWA between visual areas and language-related areas. These preliminary results demonstrate that short-term alterations in visual experience may trigger slow-wave changes in cortical visual areas. Furthermore, they suggest that plasticity-related EEG changes during sleep may reflect externally induced (“bottom up”) visual experiences, as well as internally generated (“top down”) processes.NEW & NOTEWORTHY Previous work has shown that slow-wave activity, a marker of sleep depth, is linked to neural plasticity in the sensorimotor cortex. We show that after short-term visual deprivation, subjects who reported little visual imagery had a reduced incidence of occipital slow waves. This effect was absent in subjects who reported strong spontaneous visual imagery. These findings suggest that visual imagery may “substitute” for visual perception and induce similar changes in non-rapid eye movement slow waves.

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