Sleep and cognition

Deak, Maryann C.; Stickgold, Robert

doi:10.1002/wcs.52

Cited by 50 publications

(45 citation statements)

References 48 publications

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“…Sleep‐deprived individuals show deficits in executive function, attention and memory tasks. Such cognitive deficits in the setting of sleep deprivation have also been demonstrated in real‐life circumstances (Deak & Stickgold, ). Most sleep‐deprivation studies have focused on its impact on memory performance (Duclos et al., ; Walker & Stickgold, ).…”

Section: Introductionmentioning

confidence: 81%

“…Over the past decade, an important link between sleep and cognitive processing has been established in both normal and abnormal populations (Chambers, ; Deak & Stickgold, ). Previous studies indicate that sleep promotes various cognitive functions, including decision‐making, language learning, categorization, executive functions and memory (Chambers, ).…”

Section: Introductionmentioning

confidence: 99%

“…A plethora of work demonstrates the impact of sleep deprivation on both initial encoding as well as later memory consolidation (Spencer, Walker, & Stickgold, ; Tudor et al., ; Walker & Stickgold, ), not only in humans but also animals (Kreutzmann, Tudor, Angelakos, & Abel, ). These studies suggest that deteriorating effects of sleep deprivation occur through alterations of neuronal plasticity (Kreutzmann, Havekes, Abel, & Meerlo, ), inhibition of long‐term potentiation (Davis, Harding, & Wright, ; Kim, Mahmoud, & Grover, ), reduction of hippocampal neurogenesis (Grassi Zucconi, Cipriani, Balgkouranidou, & Scattoni, ; Guzman‐Marin et al., ), and dysregulation of some cortical regions involved in learning and memory (Deak & Stickgold, ). Despite the large body of evidence on this topic, evidence for sleep‐dependent autobiographical and episodic memory, as compared with sematic and procedural memory, has been more elusive (Aly & Moscovitch, ; Walker, ).…”

Section: Introductionmentioning

confidence: 99%

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Sleep‐deprivation and autobiographical memory: evidence from sleep‐deprived nurses

Khormizi

Salehinejad

Nitsche

et al. 2018

Journal of Sleep Research

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Negative effects of sleep deprivation on different types of memory are well documented, but the specific effects on autobiographical memory performance are not well studied. In this study, we investigated performance on the autobiographical memory test in a group of sleep-deprived and well-rested nurses. One-hundred participants divided into sleep-deprived (N = 50, 25 females) and well-rested (N = 50, 25 females) groups took part in the study. The sleep-deprived group included night-shift nurses with 8-12 hr sleep deprivation, while the well-rested group had the usual night sleep before performance assessment. All participants were matched for gender, age, education and employment status. They completed depression and anxiety inventories, and underwent the autobiographical memory test, which included 18 cue words with positive, negative and neutral valence. The sleep-deprived group scored significantly higher in depression scores. Analysis of covariance (ANCOVA) results showed that sleep-deprived participants had a significantly poorer autobiographical memory compared with the well-rested group. Additionally, specific memories were significantly declined in the sleep-deprived group. This group remembered significantly less positive and more negative memories. Findings implicate that sleep deprivation has detrimental effects on autobiographical memory specificity and valence, and is associated with mood dysregulation.

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Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sleep‐deprivation and autobiographical memory: evidence from sleep‐deprived nurses

Khormizi

Salehinejad

Nitsche

et al. 2018

Journal of Sleep Research

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“…Previous studies have shown decreased sleep efficiency as well as more sleep disturbances and daytime sleepiness in adults with POTS [14, 15]. Decreased sleep time and sleep quality have been shown to impair performance on various cognitive tasks [16]. How sleep efficiency affects cognition in POTS patients is unknown but, we can postulate that sleep quality is a major contributor to brain fog in POTS.…”

Section: Discussionmentioning

confidence: 99%

What is brain fog? An evaluation of the symptom in postural tachycardia syndrome

et al. 2013

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Purpose Adolescents with postural tachycardia syndrome (POTS) often experience ill-defined cognitive impairment referred to by patients as “brain fog.” The objective of this study was to evaluate the symptom of brain fog as a means of gaining further insight into its etiology and potential palliative interventions. Methods Eligible subjects who reported having been diagnosed with POTS were recruited from social media web sites. Subjects were asked to complete a 38-item questionnaire designed for this study, and the Wood mental fatigue inventory (WMFI). Results Responses were received from 138 subjects with POTS (88 % female), ranging in age from 14 to 29 years; 132 subjects reported brain fog. WMFI scores correlated with brain fog frequency and severity (P < 0.001). The top ranked descriptors of brain fog were “forgetful,” “cloudy,” and “difficulty focusing, thinking and communicating.” The most frequently reported brain fog triggers were fatigue (91 %), lack of sleep (90 %), prolonged standing (87 %), dehydration (86 %), and feeling faint (85 %). Although aggravated by upright posture, brain fog was reported to persist after assuming a recumbent posture. The most frequently reported interventions for the treatment of brain fog were intravenous saline (77 %), stimulant medications (67 %), salt tablets (54 %), intra-muscular vitamin B-12 injections (48 %), and midodrine (45 %). Conclusions Descriptors for “brain fog” are most consistent with it being a cognitive complaint. Factors other than upright posture may play a role in the persistence of this symptom. Subjects reported a number of therapeutic interventions for brain fog not typically used in the treatment of POTS that may warrant further investigation.

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“…Sleep plays a pivotal role in learning and memory processes (2,3). Therefore, SD may affect the subsequent learning capacity and the ability to form new memories (3).…”

Section: Discussionmentioning

confidence: 99%

Aversive Memory, Anxiety-Related Behaviors, and Serum Neurochemical Levels in a Rat Model of Labored Sleep Loss

et al. 2014

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Background: Sleep deprivation (SD) is emerging as a hot topic due to its health concerns. There are compelling reasons for a tremendous interest in neuroscience of sleep in recent years. Objectives: We aimed to evaluate how total sleep deprivation (TSD) and chronic partial sleep restriction (CPSR) might affect memory, anxiety-related behaviors, and the serum level of neurochemical markers such as brain-derived neurotrophic factor (BDNF) and corticosterone in a rat model. Materials and Methods:The disk-over-water (DOW) apparatus was employed to induce TSD and CPSR in male Wistar rats. The six study arms were as follows: cage control, 48 hours; cage control, seven days; DOW control, 48 hours; DOW control, seven days, TSD, and CPSR. Elevated plus-maze (EPM) was used to measure parameters (percentage of OAT, percentage of OAE, and locomotor activity) corresponding to anxiety and aversive memory. To measure serum BDNF and corticosterone levels using the ELISA method, blood samples were drawn from all rats on the fourth day at 5 P.M. Results: Our results demonstrated that TSD (P < 0.001) and CPSR (P < 0.001) induce memory impairment while exert anxiolytic-like effects in comparison with controls. Data showed that CPSR causes more memory impairment and anxiolytic-like effect in comparison to TSD (P < 0.001).These interventions however, did not alter the locomotor activity. Serum corticosterone level raised dramatically in CPSR rats in comparison to TSD and controls. Although the difference in serum BDNF level between TSD and CPSR arms was insignificant, it was markedly decreased in comparison to corresponding controls (P < 0.001). Conclusions: Our findings suggest the more pronounced effect of CPSR rather than TSD in impairing aversive memory and reducing anxiety. Decreased BDNF and peaked corticosterone level in TSD and CPSR suggest the probable inflammatory processes involved in possible insults to the brain caused by SD.

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Sleep and cognition

Cited by 50 publications

References 48 publications

Sleep‐deprivation and autobiographical memory: evidence from sleep‐deprived nurses

Sleep‐deprivation and autobiographical memory: evidence from sleep‐deprived nurses

What is brain fog? An evaluation of the symptom in postural tachycardia syndrome

Aversive Memory, Anxiety-Related Behaviors, and Serum Neurochemical Levels in a Rat Model of Labored Sleep Loss

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