1
|
Samson DR, Vining A, Nunn CL. Sleep influences cognitive performance in lemurs. Anim Cogn 2019; 22:697-706. [PMID: 31055705 DOI: 10.1007/s10071-019-01266-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/14/2019] [Accepted: 04/29/2019] [Indexed: 12/30/2022]
Abstract
Primates spend almost half their lives asleep, yet little is known about how sleep influences their waking cognition. We hypothesized that diurnal and cathemeral lemurs differ in their need for consistent, non-segmented sleep for next-day cognitive function-including long-term memory consolidation, self-control, foraging efficiency, and sociality. Specifically, we expected that strictly diurnal Propithecus is more reliant on uninterrupted sleep for cognitive performance, as compared to four other lemur species that are more flexibly active (i.e., cathemeral). We experimentally inhibited sleep and tested next-day performance in 30 individuals of 5 lemur species over 960 total nights at the Duke Lemur Center in Durham, North Carolina. Each set of pair-housed lemurs experienced a sleep restriction and/or deprivation protocol and was subsequently tested in a variety of fitness-relevant cognitive tasks. Within-subject comparisons of performance on these tasks were made by switching the pair from the experimental sleep inhibited condition to a normal sleep environment, thus ensuring cognitive equivalency among individuals. We validated effectiveness of the protocol via actigraphy and infrared videography. Our results suggest that 'normal' non-disrupted sleep improved memory consolidation for all lemurs. Additionally, on nights of normal sleep, diurnal lemurs performed better in foraging efficiency tasks than cathemeral lemurs. Social behaviors changed in species-specific ways after exposure to experimental conditions, and self-control was not significantly linked with sleep condition. Based on these findings, the links between sleep, learning, and memory consolidation appear to be evolutionarily conserved in primates.
Collapse
Affiliation(s)
- David R Samson
- Department of Anthropology, University of Toronto, Mississauga, Canada. .,Department of Evolutionary Anthropology, Duke University, Durham, USA.
| | - Alexander Vining
- Animal Behavior Graduate Group, University of California, Davis, USA
| | - Charles L Nunn
- Duke Global Health Institute, Duke University, Durham, USA.,Department of Evolutionary Anthropology, Duke University, Durham, USA
| |
Collapse
|
2
|
Nabaee E, Kesmati M, Shahriari A, Khajehpour L, Torabi M. Cognitive and hippocampus biochemical changes following sleep deprivation in the adult male rat. Biomed Pharmacother 2018; 104:69-76. [PMID: 29772442 DOI: 10.1016/j.biopha.2018.04.197] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/26/2018] [Accepted: 04/29/2018] [Indexed: 01/08/2023] Open
Abstract
Sleep deprivation (SD) influences physiological processes such as cognitive function. The balance of oxidant and antioxidant markers, neurotrophic factors and magnesium are affected by sleep deprivation but there is no difference between pre and post training sleep deprivation. This study was designed to investigate memory retrieval and biochemical factors such as oxidant and antioxidant enzyme, brain-derived neurotrophic factor (BDNF) and magnesium levels in the hippocampus following pre and post-training sleep deprivation. Male Wistar rats (weighing 200 ± 20 g) in below groups were used: control 1, 24, 48 and 72 h SD before training groups, control2, 24 h SD1 after training (being evaluated 24 h after training) and SD2 24 after training (being evaluated 48 h after training). Memory was evaluated 90 min, 24 h or 48 h after training by step-through passive avoidance apparatus. Multiple platforms method was used to induce SD. Oxidant and antioxidant markers including glutathione (GSH), glutathione reductase (GPx), malonedialdehyde (MDA), Total antioxidant concentration, catalase, superoxide dismutase (SOD), magnesium and BDNF were assessed in the hippocampus or/and brain. 72 h pre-training SD impaired short and long-term memory significantly. There was no significant difference in hippocampus oxidant and antioxidant markers compared to control. Hippocampal BDNF and magnesium did not show any changes in all SD groups. Lack of correlation between memory impairment and levels of BDNF, magnesium and/or oxidant and antioxidant balance in the hippocampus is likely to be related to animal locomotor activity in the multiple platforms method. More research is needed to clarify the role of neurochemical systems.
Collapse
Affiliation(s)
- Ebrahim Nabaee
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Mahnaz Kesmati
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Ali Shahriari
- ِDepartment of Biochemistry, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Lotfollah Khajehpour
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mozhgan Torabi
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| |
Collapse
|
3
|
Sleep-Related Interventions to Improve Psychotherapy. COGNITIVE NEUROSCIENCE OF MEMORY CONSOLIDATION 2017. [DOI: 10.1007/978-3-319-45066-7_23] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
|
4
|
Schlafbezogene Interventionen zur Augmentation von Psychotherapie. SOMNOLOGIE 2016. [DOI: 10.1007/s11818-015-0038-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
5
|
REM sleep and memory reorganization: Potential relevance for psychiatry and psychotherapy. Neurobiol Learn Mem 2015; 122:28-40. [PMID: 25602929 DOI: 10.1016/j.nlm.2015.01.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 12/28/2014] [Accepted: 01/05/2015] [Indexed: 12/18/2022]
Abstract
Sleep can foster the reorganization of memory, i.e. the emergence of new memory content that has not directly been encoded. Current neurophysiological and behavioral evidence can be integrated into a model positing that REM sleep particularly promotes the disintegration of existing schemas and their recombination in the form of associative thinking, creativity and the shaping of emotional memory. Particularly, REM sleep related dreaming might represent a mentation correlate for the reconfiguration of memory. In a final section, the potential relevance for psychiatry and psychotherapy is discussed.
Collapse
|
6
|
The reorganisation of memory during sleep. Sleep Med Rev 2014; 18:531-41. [DOI: 10.1016/j.smrv.2014.03.005] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 03/10/2014] [Accepted: 03/10/2014] [Indexed: 11/21/2022]
|
7
|
Rossi VC, Tiba PA, Moreira KDM, Ferreira TL, Oliveira MGM, Suchecki D. Effects of sleep deprivation on different phases of memory in the rat: dissociation between contextual and tone fear conditioning tasks. Front Behav Neurosci 2014; 8:389. [PMID: 25426040 PMCID: PMC4224127 DOI: 10.3389/fnbeh.2014.00389] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 10/20/2014] [Indexed: 11/15/2022] Open
Abstract
Numerous studies show that sleep deprivation (SD) impacts negatively on cognitive processes, including learning and memory. Memory formation encompasses distinct phases of which acquisition, consolidation and retrieval are better known. Previous studies with pre-training SD induced by the platform method have shown impairment in fear conditioning tasks. Nonetheless, pre-training manipulations do not allow the distinction between effects on acquisition and/or consolidation, interfering, ultimately, on recall of/performance in the task. In the present study, animals were first trained in contextual and tone fear conditioning (TFC) tasks and then submitted to SD with the purpose to evaluate the effect of this manipulation on different stages of the learning process, e.g., in the uptake of (new) information during learning, its encoding and stabilization, and the recall of stored memories. Besides, we also investigated the effect of SD in the extinction of fear memory and a possible state-dependent learning induced by this manipulation. For each task (contextual or TFC), animals were trained and then distributed into control, not sleep-deprived (CTL) and SD groups, the latter being submitted to the modified multiple platform paradigm for 96 h. Subsets of eight rats in each group/experiment were submitted to the test of the tasks, either immediately or at different time intervals after SD. The results indicated that (a) pre- but not post-training SD impaired recall in the contextual and TFC; (b) this impairment was not state-dependent; and (c) in the contextual fear conditioning (CFC), pre-test SD prevented extinction of the learned task. Overall, these results suggest that SD interferes with acquisition, recall and extinction, but not necessarily with consolidation of emotional memory.
Collapse
Affiliation(s)
- Vanessa Contatto Rossi
- Department of Psychobiology, Escola Paulista de Medicina, Universidade Federal de São Paulo - UNIFESP São Paulo, Brazil
| | - Paula Ayako Tiba
- Centro de Matemática, Computação de Cognição, Universidade Federal do ABC - UFABC Santo André, Brazil
| | - Karin Di Monteiro Moreira
- Centro de Matemática, Computação de Cognição, Universidade Federal do ABC - UFABC Santo André, Brazil
| | - Tatiana Lima Ferreira
- Centro de Matemática, Computação de Cognição, Universidade Federal do ABC - UFABC Santo André, Brazil
| | | | - Deborah Suchecki
- Department of Psychobiology, Escola Paulista de Medicina, Universidade Federal de São Paulo - UNIFESP São Paulo, Brazil
| |
Collapse
|
8
|
Peters AC, Blechert J, Sämann PG, Eidner I, Czisch M, Spoormaker VI. One night of partial sleep deprivation affects habituation of hypothalamus and skin conductance responses. J Neurophysiol 2014; 112:1267-76. [PMID: 24920020 DOI: 10.1152/jn.00657.2013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Sleep disturbances are prevalent in clinical anxiety, but it remains unclear whether they are cause and/or consequence of this condition. Fear conditioning constitutes a valid laboratory model for the acquisition of normal and pathological anxiety. To explore the relationship between disturbed sleep and anxiety in more detail, the present study evaluated the effect of partial sleep deprivation (SD) on fear conditioning in healthy individuals. The neural correlates of 1) nonassociative learning and physiological processing and 2) associative learning (differential fear conditioning) were addressed. Measurements entailed simultaneous functional MRI, EEG, skin conductance response (SCR), and pulse recordings. Regarding nonassociative learning, partial SD resulted in a generalized failure to habituate during fear conditioning, as evidenced by reduced habituation of SCR and hypothalamus responses to all stimuli. Furthermore, SCR and hypothalamus activity were correlated, supporting their functional relationship. Regarding associative learning, effects of partial SD on the acquisition of conditioned fear were weaker and did not reach statistical significance. The hypothalamus plays an integral role in the regulation of sleep and autonomic arousal. Thus sleep disturbances may play a causal role in the development of normal and possibly pathological fear by increasing the susceptibility of the sympathetic nervous system to stressful experiences.
Collapse
Affiliation(s)
- Anja C Peters
- Neuroimaging Research Group, Max Planck Institute of Psychiatry, Munich, Germany; and
| | - Jens Blechert
- Division of Clinical Psychology, Psychotherapy, and Health Psychology, Institute of Psychology, University of Salzburg, Salzburg, Austria
| | - Philipp G Sämann
- Neuroimaging Research Group, Max Planck Institute of Psychiatry, Munich, Germany; and
| | - Ines Eidner
- Neuroimaging Research Group, Max Planck Institute of Psychiatry, Munich, Germany; and
| | - Michael Czisch
- Neuroimaging Research Group, Max Planck Institute of Psychiatry, Munich, Germany; and
| | - Victor I Spoormaker
- Neuroimaging Research Group, Max Planck Institute of Psychiatry, Munich, Germany; and
| |
Collapse
|
9
|
Colavito V, Fabene PF, Grassi-Zucconi G, Pifferi F, Lamberty Y, Bentivoglio M, Bertini G. Experimental sleep deprivation as a tool to test memory deficits in rodents. Front Syst Neurosci 2013; 7:106. [PMID: 24379759 PMCID: PMC3861693 DOI: 10.3389/fnsys.2013.00106] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 11/21/2013] [Indexed: 12/19/2022] Open
Abstract
Paradigms of sleep deprivation (SD) and memory testing in rodents (laboratory rats and mice) are here reviewed. The vast majority of these studies have been aimed at understanding the contribution of sleep to cognition, and in particular to memory. Relatively little attention, instead, has been devoted to SD as a challenge to induce a transient memory impairment, and therefore as a tool to test cognitive enhancers in drug discovery. Studies that have accurately described methodological aspects of the SD protocol are first reviewed, followed by procedures to investigate SD-induced impairment of learning and memory consolidation in order to propose SD protocols that could be employed as cognitive challenge. Thus, a platform of knowledge is provided for laboratory protocols that could be used to assess the efficacy of drugs designed to improve memory performance in rodents, including rodent models of neurodegenerative diseases that cause cognitive deficits, and Alzheimer's disease in particular. Issues in the interpretation of such preclinical data and their predictive value for clinical translation are also discussed.
Collapse
Affiliation(s)
- Valeria Colavito
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
| | - Paolo F Fabene
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
| | | | - Fabien Pifferi
- Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle Brunoy, France
| | - Yves Lamberty
- Neuroscience Therapeutic Area, UCB Pharma s.a. Braine l'Alleud, Belgium
| | - Marina Bentivoglio
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
| | - Giuseppe Bertini
- Department of Neurological and Movement Sciences, University of Verona Verona, Italy
| |
Collapse
|
10
|
Rahman A, Languille S, Lamberty Y, Babiloni C, Perret M, Bordet R, Blin OJ, Jacob T, Auffret A, Schenker E, Richardson J, Pifferi F, Aujard F. Sleep deprivation impairs spatial retrieval but not spatial learning in the non-human primate grey mouse lemur. PLoS One 2013; 8:e64493. [PMID: 23717620 PMCID: PMC3661499 DOI: 10.1371/journal.pone.0064493] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 04/15/2013] [Indexed: 12/04/2022] Open
Abstract
A bulk of studies in rodents and humans suggest that sleep facilitates different phases of learning and memory process, while sleep deprivation (SD) impairs these processes. Here we tested the hypothesis that SD could alter spatial learning and memory processing in a non-human primate, the grey mouse lemur (Microcebus murinus), which is an interesting model of aging and Alzheimer's disease (AD). Two sets of experiments were performed. In a first set of experiments, we investigated the effects of SD on spatial learning and memory retrieval after one day of training in a circular platform task. Eleven male mouse lemurs aged between 2 to 3 years were tested in three different conditions: without SD as a baseline reference, 8 h of SD before the training and 8 h of SD before the testing. The SD was confirmed by electroencephalographic recordings. Results showed no effect of SD on learning when SD was applied before the training. When the SD was applied before the testing, it induced an increase of the amount of errors and of the latency prior to reach the target. In a second set of experiments, we tested the effect of 8 h of SD on spatial memory retrieval after 3 days of training. Twenty male mouse lemurs aged between 2 to 3 years were tested in this set of experiments. In this condition, the SD did not affect memory retrieval. This is the first study that documents the disruptive effects of the SD on spatial memory retrieval in this primate which may serve as a new validated challenge to investigate the effects of new compounds along physiological and pathological aging.
Collapse
Affiliation(s)
- Anisur Rahman
- Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Brunoy, France
| | - Solène Languille
- Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Brunoy, France
| | - Yves Lamberty
- UCB Pharma s.a., Neuroscience Therapeutic Area, Braine l'Alleud, Belgium
| | - Claudio Babiloni
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy, and IRCCS San Raffalele Pisana, Rome, Italy
| | - Martine Perret
- Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Brunoy, France
| | - Regis Bordet
- Département de Pharmacologie Médicale, EA 1046, Université Lille Nord de France, UDSL, Faculté de Médecine, CHU, Lille, France
| | - Olivier J. Blin
- CPCET-CIC, AP-HM Timone, INT, UMR 7289, CNRS - Aix Marseille Université, Marseille, France
| | - Tom Jacob
- Johnson and Johnson Pharmaceutical Research and Development, A Division of Janssen Pharmaceutica, Beerse, Belgium
| | - Alexandra Auffret
- CPCET-CIC, AP-HM Timone, INT, UMR 7289, CNRS - Aix Marseille Université, Marseille, France
| | | | - Jill Richardson
- GlaxoSmithKline, R&D China U.K. Group, Stevenage, Hertfordshire, United Kingdom
| | - Fabien Pifferi
- Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Brunoy, France
| | - Fabienne Aujard
- Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Brunoy, France
| |
Collapse
|
11
|
Bridoux A, Laloux C, Derambure P, Bordet R, Monaca Charley C. The acute inhibition of rapid eye movement sleep by citalopram may impair spatial learning and passive avoidance in mice. J Neural Transm (Vienna) 2012; 120:383-9. [DOI: 10.1007/s00702-012-0901-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 09/23/2012] [Indexed: 01/26/2023]
|
12
|
Patti CL, Zanin KA, Sanday L, Kameda SR, Fernandes-Santos L, Fernandes HA, Andersen ML, Tufik S, Frussa-Filho R. Effects of sleep deprivation on memory in mice: role of state-dependent learning. Sleep 2011; 33:1669-79. [PMID: 21120129 DOI: 10.1093/sleep/33.12.1669] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
STUDY OBJECTIVES A considerable amount of experimental evidence suggests that sleep plays a critical role in learning/memory processes. In addition to paradoxical sleep, slow wave sleep is also reported to be involved in the consolidation process of memories. Additionally, sleep deprivation can induce other behavioral modifications, such as emotionality and alternations in locomotor activity in rodents. These sleep deprivation-induced alterations in the behavioral state of animals could produce state-dependent learning and contribute, at least in part, to the amnestic effects of sleep deprivation. The aim of the present study was to examine the participation of state-dependent learning during memory impairment induced by either paradoxical sleep deprivation (PSD) or total sleep deprivation (TSD) in mice submitted to the plus-maze discriminative avoidance or to the passive avoidance task. DESIGN Paradoxical sleep deprivation (by the multiple platform method) and total sleep deprivation (by the gentle handling method) were applied to animals before training and/or testing. CONCLUSIONS Whereas pre-training or pre-test PSD impaired retrieval in both memory models, pre-training plus pre-test PSD counteracted this impairment. For TSD, pre-training, pre-test, and pre-training plus pre-test TSD impaired retrieval in both models. Our data demonstrate that PSD- (but not TSD-) memory deficits are critically related to state-dependent learning.
Collapse
Affiliation(s)
- Camilla L Patti
- Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Khadrawy YA, Nour NA, Aboul Ezz HS. Effect of oxidative stress induced by paradoxical sleep deprivation on the activities of Na+, K+-ATPase and acetylcholinesterase in the cortex and hippocampus of rat. Transl Res 2011; 157:100-7. [PMID: 21256462 DOI: 10.1016/j.trsl.2010.11.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 11/24/2010] [Accepted: 11/24/2010] [Indexed: 11/19/2022]
Abstract
Several studies revealed the importance of paradoxical sleep as a homeostatic mechanism by which the brain can control oxidative stress. The aim of the present study is to investigate the effect of 72 h of paradoxical sleep deprivation on the oxidative stress markers and its insults on the activities of Na(+), K(+)-ATPase and acetylcholinesterase in the cortex and hippocampus of albino rat. Animals were subjected to paradoxical sleep deprivation for 72 h. At the end of the experiment, the rats were sacrificed, and catalase activity, levels of reduced glutathione, lipid peroxidation, and nitric oxide were assayed together with the activities of Na(+), K(+)-ATPase and acetylcholinesterase in the cortex and hippocampus. The present study revealed a significant increase in lipid peroxidation accompanied by a significant decrease in reduced glutathione in the cortex and hippocampus. Na(+), K(+)-ATPase decreased significantly in both areas. However, acetylcholinesterase showed a significant increase in the investigated brain regions. The present data showed that 72 h of paradoxical sleep deprivation induced oxidative stress in the cortex and hippocampus. It could be suggested that the inhibition of Na(+), K(+)-ATPase and the increased acetylcholinesterase activity may underlie memory impairment, increased brain excitability, and anxiety induced by paradoxical sleep deprivation.
Collapse
Affiliation(s)
- Yasser A Khadrawy
- Department of Medical Physiology, Medical Division, National Research Center, Egypt.
| | | | | |
Collapse
|
14
|
Walker MP, van der Helm E. Overnight therapy? The role of sleep in emotional brain processing. Psychol Bull 2009; 135:731-48. [PMID: 19702380 DOI: 10.1037/a0016570] [Citation(s) in RCA: 562] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cognitive neuroscience continues to build meaningful connections between affective behavior and human brain function. Within the biological sciences, a similar renaissance has taken place, focusing on the role of sleep in various neurocognitive processes and, most recently, on the interaction between sleep and emotional regulation. This review surveys an array of diverse findings across basic and clinical research domains, resulting in a convergent view of sleep-dependent emotional brain processing. On the basis of the unique neurobiology of sleep, the authors outline a model describing the overnight modulation of affective neural systems and the (re)processing of recent emotional experiences, both of which appear to redress the appropriate next-day reactivity of limbic and associated autonomic networks. Furthermore, a rapid eye movement (REM) sleep hypothesis of emotional-memory processing is proposed, the implications of which may provide brain-based insights into the association between sleep abnormalities and the initiation and maintenance of mood disturbances.
Collapse
Affiliation(s)
- Matthew P Walker
- Sleep and Neuroimaging Laboratory, Department of Psychology, University of California, Berkeley, California 94720-1650, USA.
| | | |
Collapse
|
15
|
Sleep duration, wake/sleep symptoms, and academic performance in Hong Kong Secondary School Children. Sleep Breath 2009; 13:357-67. [DOI: 10.1007/s11325-009-0255-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2008] [Revised: 03/16/2009] [Accepted: 03/20/2009] [Indexed: 11/26/2022]
|
16
|
Saxvig IW, Lundervold AJ, Grønli J, Ursin R, Bjorvatn B, Portas CM. The effect of a REM sleep deprivation procedure on different aspects of memory function in humans. Psychophysiology 2008; 45:309-17. [DOI: 10.1111/j.1469-8986.2007.00623.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
17
|
Yoo SS, Hu PT, Gujar N, Jolesz FA, Walker MP. A deficit in the ability to form new human memories without sleep. Nat Neurosci 2007; 10:385-92. [PMID: 17293859 DOI: 10.1038/nn1851] [Citation(s) in RCA: 362] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2006] [Accepted: 01/18/2007] [Indexed: 11/09/2022]
Abstract
Evidence indicates that sleep after learning is critical for the subsequent consolidation of human memory. Whether sleep before learning is equally essential for the initial formation of new memories, however, remains an open question. We report that a single night of sleep deprivation produces a significant deficit in hippocampal activity during episodic memory encoding, resulting in worse subsequent retention. Furthermore, these hippocampal impairments instantiate a different pattern of functional connectivity in basic alertness networks of the brainstem and thalamus. We also find that unique prefrontal regions predict the success of encoding for sleep-deprived individuals relative to those who have slept normally. These results demonstrate that an absence of prior sleep substantially compromises the neural and behavioral capacity for committing new experiences to memory. It therefore appears that sleep before learning is critical in preparing the human brain for next-day memory formation-a worrying finding considering society's increasing erosion of sleep time.
Collapse
Affiliation(s)
- Seung-Schik Yoo
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | | | | | | | | |
Collapse
|
18
|
Abstract
Although the functions of sleep remain largely unknown, one of the most exciting hypotheses is that sleep contributes importantly to processes of memory and brain plasticity. Over the past decade, a large body of work, spanning most of the neurosciences, has provided a substantive body of evidence supporting this role of sleep in what is becoming known as sleep-dependent memory processing. We review these findings, focusing specifically on the role of sleep in (a) memory encoding, (b) memory consolidation, (c) brain plasticity, and (d) memory reconsolidation; we finish with a summary of the field and its potential future directions.
Collapse
Affiliation(s)
- Matthew P Walker
- Sleep and Neuroimaging, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA.
| | | |
Collapse
|
19
|
Castro JPMV, Frussa-Filho R, Fukushiro DF, Chinen CC, Abílio VC, Silva RH. Effects of long-term continuous exposure to light on memory and anxiety in mice. Physiol Behav 2005; 86:218-23. [PMID: 16083922 DOI: 10.1016/j.physbeh.2005.07.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2004] [Revised: 06/07/2005] [Accepted: 07/12/2005] [Indexed: 11/29/2022]
Abstract
The studies on the relationship between the light/dark cycle and memory function mostly used protocols of acute disruption of the circadian rhythm. The aim of the present study is to verify the effects of long-term continuous exposure to light on memory, anxiety and motor parameters of mice tested in the plus-maze discriminative avoidance task. Mice were conditioned to choose between the two enclosed arms (one aversive and one non-aversive) while avoiding the open arms of a modified elevated plus-maze apparatus. Memory was evaluated by the time spent in the aversive enclosed arm, anxiety was evaluated by the time spent in the open arms and locomotor behavior was evaluated by number of entries in the arms of the maze. The results showed that long-term (35-42 days) continuous light exposure did not modify memory or anxiety parameters but increased locomotor activity. While the increase in locomotor behavior is in line with previous studies, the unexpected absence of alterations in memory and anxiety (reported to be influenced by the circadian rhythm) is discussed.
Collapse
Affiliation(s)
- J P M V Castro
- Departamento de Farmacologia, Universidade Federal de São Paulo, Brazil
| | | | | | | | | | | |
Collapse
|
20
|
Silva RH, Abílio VC, Takatsu AL, Kameda SR, Grassl C, Chehin AB, Medrano WA, Calzavara MB, Registro S, Andersen ML, Machado RB, Carvalho RC, Ribeiro RDA, Tufik S, Frussa-Filho R. Role of hippocampal oxidative stress in memory deficits induced by sleep deprivation in mice. Neuropharmacology 2004; 46:895-903. [PMID: 15033349 DOI: 10.1016/j.neuropharm.2003.11.032] [Citation(s) in RCA: 226] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2003] [Revised: 11/14/2003] [Accepted: 11/25/2003] [Indexed: 11/28/2022]
Abstract
Numerous animal and clinical studies have described memory deficits following sleep deprivation. There is also evidence that the absence of sleep increases brain oxidative stress. The present study investigates the role of hippocampal oxidative stress in memory deficits induced by sleep deprivation in mice. Mice were sleep deprived for 72 h by the multiple platform method-groups of 4-6 animals were placed in water tanks, containing 12 platforms (3 cm in diameter) surrounded by water up to 1 cm beneath the surface. Mice kept in their home cage or placed onto larger platforms were used as control groups. The results showed that hippocampal oxidized/reduced glutathione ratio as well as lipid peroxidation of sleep-deprived mice was significantly increased compared to control groups. The same procedure of sleep deprivation led to a passive avoidance retention deficit. Both passive avoidance retention deficit and increased hippocampal lipid peroxidation were prevented by repeated treatment (15 consecutive days, i.p.) with the antioxidant agents melatonin (5 mg/kg), N-tert-butyl-alpha-phenylnitrone (200 mg/kg) or vitamin E (40 mg/kg). The results indicate an important role of hippocampal oxidative stress in passive avoidance memory deficits induced by sleep deprivation in mice.
Collapse
Affiliation(s)
- R H Silva
- Department of Pharmacology, Universidade Federal de São Paulo (UNIFESP), Rua Botucatu, 862 Ed. Leal Prado, CEP 04023-062 São Paulo, SP, Brazil.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Peigneux P, Laureys S, Delbeuck X, Maquet P. Sleeping brain, learning brain. The role of sleep for memory systems. Neuroreport 2001; 12:A111-24. [PMID: 11742260 DOI: 10.1097/00001756-200112210-00001] [Citation(s) in RCA: 221] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The hypothesis that sleep participates in the consolidation of recent memory traces has been investigated using four main paradigms: (1) effects of post-training sleep deprivation on memory consolidation, (2) effects of learning on post-training sleep, (3) effects of within sleep stimulation on the sleep pattern and on overnight memories, and (4) re-expression of behavior-specific neural patterns during post-training sleep. These studies convincingly support the idea that sleep is deeply involved in memory functions in humans and animals. However, the available data still remain too scarce to confirm or reject unequivocally the recently upheld hypothesis that consolidations of non-declarative and declarative memories are respectively dependent upon REM and NREM sleep processes.
Collapse
Affiliation(s)
- P Peigneux
- Cyclotron Research Center, University of Liège, Bât. B30, Sart Tilman, B-4000 Liège, Belgium
| | | | | | | |
Collapse
|