EEG spectral power and cognitive performance during sleep inertia: The effect of normal sleep duration and partial sleep deprivation

2006 ◽  
Vol 87 (1) ◽  
pp. 177-184 ◽  
Author(s):  
P TASSI ◽  
A BONNEFOND ◽  
O ENGASSER ◽  
A HOEFT ◽  
R ESCHENLAUER ◽  
...  
Keyword(s):  
Sleep Deprivation ◽  
Cognitive Performance ◽  
Sleep Duration ◽  
Spectral Power ◽  
Sleep Inertia ◽  
Eeg Spectral Power ◽  
Partial Sleep Deprivation ◽  
Normal Sleep

scholarly journals Commonalities in EEG Spectral Power Abnormalities Between Women With ADHD and Women With Bipolar Disorder During Rest and Cognitive Performance

2016 ◽  
Vol 29 (6) ◽  
pp. 856-866 ◽  
Author(s):  
Anna-Sophie Rommel ◽  
Glenn L. Kitsune ◽  
Giorgia Michelini ◽  
Georgina M. Hosang ◽  
Philip Asherson ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Cognitive Performance ◽  
Spectral Power ◽  
Eeg Spectral Power

Effects of Noise on Sleep Inertia as a Function of Circadian Placement of a One-Hour Nap

1992 ◽  
Vol 75 (1) ◽  
pp. 291-302 ◽  
Author(s):  
P. Tassi ◽  
A. Nicolas ◽  
G. Dewasmes ◽  
R. Eschenlauer ◽  
J. Ehrhart ◽  
...  
Keyword(s):  
Response Time ◽  
Sleep Deprivation ◽  
Spatial Memory ◽  
Deleterious Effect ◽  
Time Of Day ◽  
Memory Test ◽  
Acoustic Environment ◽  
Sleep Inertia ◽  
Partial Sleep Deprivation ◽  
Continuous Noise

The purpose of the present study was to analyse the arousing effects of noise on sleep inertia as a function of circadian placement of a one-hour nap. In a first experiment, we measured the effects of sleep inertia in a neutral acoustic environment after a one-hour nap placed either at 0100 or 0400 on response time during a spatial memory test. In a second experiment were analysed the effects of an intense continuous noise on sleep inertia. The results showed that noise produced a total abolition of sleep inertia after an early nap (0000 to 0100). This may be due to the arousing effect of noise; however, results are less clear after a late nap 0300 to 0400 as noise seems to be ineffective. This result is discussed in terms of either a function of time-of-day effect or of prior sleep intensity. Moreover, our data suggest a possible interaction of noise with partial sleep deprivation leading to a slight deleterious effect on those subjects who did not sleep at all.

scholarly journals Insomnia subtypes characterised by objective sleep duration and NREM spectral power and the effect of acute sleep restriction: an exploratory analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chien-Hui Kao ◽  
Angela L. D’Rozario ◽  
Nicole Lovato ◽  
Rick Wassing ◽  
Delwyn Bartlett ◽  
...  
Keyword(s):  
Sleep Duration ◽  
Spectral Power ◽  
Power Spectral Analysis ◽  
Asymmetry Index ◽  
Sleep Restriction ◽  
Healthy Controls ◽  
Sleep State ◽  
Subjective Sleep Quality ◽  
Delta Power ◽  
Normal Sleep

AbstractInsomnia disorder (ID) is a heterogeneous disorder with proposed subtypes based on objective sleep duration. We speculated that insomnia subtyping with additional power spectral analysis and measurement of response to acute sleep restriction may be informative in overall assessment of ID. To explore alternative classifications of ID subtypes, insomnia patients (n = 99) underwent two consecutive overnight sleep studies: (i) habitual sleep opportunity (polysomnography, PSG) and, (ii) two hours less sleep opportunity (electroencephalography, EEG), with the first night compared to healthy controls (n = 25). ID subtypes were derived from data-driven classification of PSG, EEG spectral power and interhemispheric EEG asymmetry index. Three insomnia subtypes with different sleep duration and NREM spectral power were identified. One subtype (n = 26) had shorter sleep duration and lower NREM delta power than healthy controls (short-sleep delta-deficient; SSDD), the second subtype (n = 51) had normal sleep duration but lower NREM delta power than healthy controls (normal-sleep delta-deficient; NSDD) and a third subtype showed (n = 22) no difference in sleep duration or delta power from healthy controls (normal neurophysiological sleep; NNS). Acute sleep restriction improved multiple objective sleep measures across all insomnia subtypes including increased delta power in SSDD and NSDD, and improvements in subjective sleep quality for SSDD (p = 0.03), with a trend observed for NSDD (p = 0.057). These exploratory results suggest evidence of novel neurophysiological insomnia subtypes that may inform sleep state misperception in ID and with further research, may provide pathways for personalised care.

Insomnia subtypes characterised by objective sleep duration and NREM spectral power and the effect of acute sleep restriction: an exploratory analysis

2021 ◽  
Author(s):  
Chien-Hui Kao ◽  
Angela L. D'Rozario ◽  
Nicole Lovato ◽  
Rick Wassing ◽  
Delwyn Bartlett ◽  
...  
Keyword(s):  
Sleep Duration ◽  
Spectral Power ◽  
Power Spectral Analysis ◽  
Asymmetry Index ◽  
Sleep Restriction ◽  
Healthy Controls ◽  
Sleep State ◽  
Subjective Sleep Quality ◽  
Delta Power ◽  
Normal Sleep

Abstract Insomnia disorder (ID) is a heterogeneous disorder with proposed subtypes based on objective sleep duration. We speculated that insomnia subtyping with additional power spectral analysis and measurement of response to acute sleep restriction may be informative in overall assessment of ID. To explore alternative classifications of ID subtypes, insomnia patients (n = 99) underwent two consecutive overnight sleep studies: (i) habitual sleep opportunity (polysomnography, PSG) and, (ii) two hours less sleep opportunity (electroencephalography, EEG), with the first night compared to healthy controls (n = 25). ID subtypes were derived from data-driven classification of PSG, EEG spectral power and interhemispheric EEG asymmetry index. Three insomnia subtypes with different sleep duration and NREM spectral power were identified. One subtype (n = 26) had shorter sleep duration and lower NREM delta power than healthy controls (short-sleep delta-deficient; SSDD), the second subtype (n = 51) had normal sleep duration but lower NREM delta power than healthy controls (normal-sleep delta-deficient; NSDD) and a third subtype showed (n = 22) no difference in sleep duration or delta power from healthy controls (normal neurophysiological sleep; NNS). Acute sleep restriction improved multiple objective sleep measures across all insomnia subtypes including increased delta power in SSDD and NSDD, and improvements in subjective sleep quality for SSDD (p = 0.03), with a trend observed for NSDD (p = 0.057). These exploratory results suggest evidence of novel neurophysiological insomnia subtypes that may inform sleep state misperception in ID and with further research, may provide pathways for personalised care.

Interaction of the Alerting Effect of Noise with Partial Sleep Deprivation and Circadian Rhythmicity of Vigilance

1993 ◽  
Vol 77 (3_suppl) ◽  
pp. 1239-1248 ◽  
Author(s):  
P. Tassi ◽  
A. Nicolas ◽  
C. Seegmuller ◽  
G. Dewasmes ◽  
J. P. Libert ◽  
...  
Keyword(s):  
Sleep Deprivation ◽  
Cognitive Performance ◽  
Present Experiment ◽  
Time Of Day ◽  
Noise Effects ◽  
Late Night ◽  
Speed Of Response ◽  
Sleep Debt ◽  
Two Factors ◽  
Partial Sleep Deprivation

Only a few studies have been devoted to the interaction of noise with sleep deprivation and time of day. In a previous study we demonstrated that noise had an alerting effect on cognitive performance during the early night but not during the late night. However, it was not clear whether these different effects of noise were related to prior sleep debt or to time of day as both factors varied simultaneously. In the present experiment, we further studied this issue to identify which of these two factors was responsible for the noise effects. Analysis showed that, when performance was tested at different times with an equivalent prior sleep debt, noise improved speed of response at 0500 but not at 0800 at which variability of response time increased. Noise had no effect on errors. It is suggested that the effect of noise depends on the underlying arousal and raises arousal from its low level due either to time of day or to partial sleep deprivation.

scholarly journals Quantifying Cognitive Impairment After Sleep Deprivation at Different Times of Day: A Proof of Concept Using Ultra-Short Smartphone-Based Tests

2021 ◽  
Vol 15 ◽  
Author(s):  
Benjamin C. Holding ◽  
Michael Ingre ◽  
Predrag Petrovic ◽  
Tina Sundelin ◽  
John Axelsson
Keyword(s):  
Working Memory ◽  
Episodic Memory ◽  
Sleep Deprivation ◽  
Cognitive Performance ◽  
Test Performance ◽  
Cognitive Abilities ◽  
Time Of Day ◽  
Stroop Test ◽  
Cognitive Tests ◽  
Normal Sleep

Cognitive functioning is known to be impaired following sleep deprivation and to fluctuate depending on the time of day. However, most methods of assessing cognitive performance remain impractical for environments outside of the lab. This study investigated whether 2-min smartphone-based versions of commonly used cognitive tests could be used to assess the effects of sleep deprivation and time of day on diverse cognitive functions. After three nights of normal sleep, participants (N = 182) were randomised to either one night of sleep deprivation or a fourth night of normal sleep. Using the Karolinska WakeApp (KWA), participants completed a battery of 2-min cognitive tests, including measures of attention, arithmetic ability, episodic memory, working memory, and a Stroop test for cognitive conflict and behavioural adjustment. A baseline measurement was completed at 22:30 h, followed by three measurements the following day at approximately 08:00 h, 12:30 h, and 16:30 h. Sleep deprivation led to performance impairments in attention, arithmetic ability, episodic memory, and working memory. No effect of sleep deprivation was observed in the Stroop test. There were variations in attention and arithmetic test performance across different times of day. The effect of sleep deprivation on all cognitive tests was also found to vary at different times of day. In conclusion, this study shows that the KWA’s 2-min cognitive tests can be used to detect cognitive impairments following sleep deprivation, and fluctuations in cognitive performance relating to time of day. The results demonstrate the potential of using brief smartphone-based tasks to measure a variety of cognitive abilities within sleep and fatigue research.

scholarly journals The Effect of Experimental Recuperative and Appetitive Post-lunch Nap Opportunities, With or Without Caffeine, on Mood and Reaction Time in Highly Trained Athletes

2021 ◽  
Vol 12 ◽  
Author(s):  
Mohamed Romdhani ◽  
Nizar Souissi ◽  
Ismael Dergaa ◽  
Imen Moussa-Chamari ◽  
Olfa Abene ◽  
...  
Keyword(s):  
Reaction Time ◽  
Sleep Deprivation ◽  
Mood State ◽  
Post Intervention ◽  
Double Blind ◽  
Caffeine Ingestion ◽  
Time In Bed ◽  
Subjective Sleepiness ◽  
Partial Sleep Deprivation ◽  
Normal Sleep

Purpose: To investigate the effects of placebo (PLA), 20 min nap opportunity (N20), 5mg·kg−1 of caffeine (CAF), and their combination (CAF+N20) on sleepiness, mood and reaction-time after partial sleep deprivation (PSD; 04h30 of time in bed; study 1) or after normal sleep night (NSN; 08h30 of time in bed; study 2).Methods: Twenty-three highly trained athletes (study 1; 9 and study 2; 14) performed four test sessions (PLA, CAF, N20 and CAF+N20) in double-blind, counterbalanced and randomized order. Simple (SRT) and two-choice (2CRT) reaction time, subjective sleepiness (ESS) and mood state (POMS) were assessed twice, pre- and post-intervention.Results: SRT was lower (i.e., better performance) during CAF condition after PSD (pre: 336 ± 15 ms vs. post: 312 ± 9 ms; p < 0.001; d = 2.07; Δ% = 7.26) and NSN (pre: 350 ± 39 ms vs. post: 323 ± 32 ms; p < 0.001; d = 0.72; Δ% = 7.71) compared to pre-intervention. N20 decreased 2CRT after PSD (pre: 411 ± 13 ms vs. post: 366 ± 20 ms; p < 0.001; d = 2.89; Δ% = 10.81) and NSN (pre: 418 ± 29 ms vs. post: 375 ± 40 ms; p < 0.001; d = 1.23; Δ% = 10.23). Similarly, 2CRT was shorter during CAF+N20 sessions after PSD (pre: 406 ± 26 ms vs. post: 357 ± 17 ms; p < 0.001; d = 2.17; Δ% = 12.02) and after NSN (pre: 386 ± 33 ms vs. post: 352 ± 30 ms; p < 0.001; d = 1.09; Δ% = 8.68). After PSD, POMS score decreased after CAF (p < 0.001; d = 2.38; Δ% = 66.97) and CAF+N20 (p < 0.001; d = 1.68; Δ% = 46.68). However, after NSN, only N20 reduced POMS (p < 0.001; d = 1.05; Δ% = 78.65) and ESS (p < 0.01; d = 0.71; Δ% = 19.11).Conclusion: After PSD, all interventions reduced sleepiness and only CAF enhanced mood with or without napping. However, only N20 enhanced mood and reduced sleepiness after NSN. Caffeine ingestion enhanced SRT performance regardless of sleep deprivation. N20, with or without caffeine ingestion, enhanced 2CRT independently of sleep deprivation. This suggests a different mode of action of napping and caffeine on sleepiness, mood and reaction time.

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