Article
Multidisciplinary Sciences
Gil Meir Leizerowitz, Ran Gabai, Meir Plotnik, Ofer Keren, Avi Karni
Summary: It is often overlooked that young healthy adults can substantially improve in activities that are part of their daily routine. In this study, researchers followed the effects of repeated executions of the Timed-Up-and-Go (TUG) task in young healthy adults, and found that task execution times improved robustly and were well retained even after a week.
Article
Multidisciplinary Sciences
Anil Kamat, Condell Eastmond, Yuanyuan Gao, Arun Nemani, Erim Yanik, Lora Cavuoto, Matthew Hackett, Jack Norfleet, Steven Schwaitzberg, Suvranu De, Xavier Intes
Summary: This study presents a fNIRS dataset acquired on mobile subjects performing FLS tasks in a laboratory environment. Relevant information and FLS scores are provided to facilitate the use of this open-access dataset.
Article
Multidisciplinary Sciences
Nitin S. Chouhan, Leslie C. Griffith, Paula Haynes, Amita Sehgal
Summary: Sleep plays an important role in memory consolidation, but under specific conditions like starvation, there is a memory formation mechanism that does not rely on sleep, providing an evolutionary advantage. Fruit flies are able to form sleep-dependent and sleep-independent memories based on an adaptive circuit mechanism, which demonstrates plasticity in memory circuits in response to changing environmental conditions.
Article
Neurosciences
Yori R. Escalante, Yuming Lei
Summary: A study explored memory interference in motor skill tasks and found that the susceptibility to interference varies depending on expertise. The authors suggest that motor memories of expert chefs and competent home cooks are organized differently based on their experiment with a vegetable-chopping task.
JOURNAL OF NEUROPHYSIOLOGY
(2023)
Article
Psychiatry
Ranin Ballan, Simon J. J. Durrant, Robert Stickgold, Alexandra Morgan, Dara S. S. Manoach, Yafit Gabay
Summary: Individuals with ADHD show a failure in sleep-dependent consolidation of procedural learning, which may disrupt automatic control routines and increase the load on attentional resources.
TRANSLATIONAL PSYCHIATRY
(2022)
Article
Biochemistry & Molecular Biology
Youri G. Bolsius, Pim R. A. Heckman, Camilla Paraciani, Sophia Wilhelm, Frank Raven, Elroy L. Meijer, Martien J. H. Kas, Steve Ramirez, Peter Meerlo, Robbert Havekes
Summary: Sleep deprivation impairs hippocampal memory processes and can cause amnesia, but it does not necessarily lead to memory loss. Instead, it results in suboptimal storage of information that cannot be retrieved without drug treatment or optogenetic stimulation.
Article
Sport Sciences
Sajjad Daneshgar, Taylor Tvrdy, Roger m. Enoka
Summary: The purpose of this study was to investigate the influence of practice on the pegboard times and peg-manipulation phases of older adults. The results showed that there were differences between groups in the phases of the peg-manipulation cycle that became faster with practice.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2023)
Article
Neurosciences
Dan Denis, Dimitrios Mylonas, Craig Poskanzer, Verda Bursal, Jessica D. Payne, Robert Stickgold
Summary: This study reveals the importance of sleep in memory consolidation, with initial memory strength playing a crucial role in determining which memories are consolidated during sleep. Furthermore, sleep spindles appear to facilitate memory consolidation based on memory strength, with weak memories benefiting the most from the presence of fast sleep spindles during non-rapid eye movement sleep.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Neurosciences
Katrina P. Nguyen, Abhinav Sharma, Mauricio Gil-Silva, Aryn H. Gittis, Steven M. Chase
Summary: This study revealed that mouse locomotor learning is accompanied by specific paw kinematic progressions that change with different stages of performance. Mice refine interlimb coordination and stride length during learning, ultimately adopting a more variable locomotor strategy.
Article
Psychology, Clinical
Lincoln Lik Hang Lo, Edwin Ho Ming Lee, Christy Lai Ming Hui, Catherine Shiu Yin Chong, Wing Chung Chang, Sherry Kit Wa Chan, Jessie Jingxia Lin, William Tak Lam Lo, Eric Yu Hai Chen
Summary: Our study found that both high-intensity interval training (HIIT) and aerobic endurance exercise (AE) were effective in improving sleep-dependent procedural memory consolidation in individuals with schizophrenia. HIIT showed a more distinctive effect compared to the control group.
PSYCHOLOGICAL MEDICINE
(2023)
Review
Biochemistry & Molecular Biology
Hongling Guo, Tahir Ali, Jianyu Que, Yanmei Zhou, Yang Bai
Summary: This article reviews the role of dendritic spine dynamics in different phases of associative memory processing and highlights the need for suitable tools to measure and control spine dynamics in vivo under behaviorally relevant conditions.
Article
Multidisciplinary Sciences
Jessica D. Creery, David J. Brang, Jason D. Arndt, Adrianna Bassard, Vernon L. Towle, James X. Tao, Shasha Wu, Sandra Rose, Peter C. Warnke, Naoum P. Issa, Ken A. Paller
Summary: This study investigates the impact of sleep on memory by measuring electrical activity in the hippocampus, and finds that the presentation of sounds during sleep enhances corresponding spatial memories, which is associated with increased specific brainwave activity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Anuck Sawangjit, Maximilian Harkotte, Carlos N. Oyanedel, Niels Niethard, Jan Born, Marion Inostroza
Summary: Memory consolidation is promoted by both sleep and wakefulness, but their effects on hippocampal and nonhippocampal representations differ. Sleep consolidation involves event-context binding, while wake consolidation tends to strengthen context-independent representations.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Neurosciences
Timothy Tadros, Maxim Bazhenov
Summary: Relational memory is critical for mammalian reasoning. Sleep plays a crucial role in offline processing and improving the ability to make indirect associations.
JOURNAL OF NEUROSCIENCE
(2022)
Article
Psychology, Mathematical
Magdalena Abel, Anna T. Nickl, Anna Ressle, Carmen Unger, Karl-Heinz T. Baeuml
Summary: Numerous studies indicate that sleep has beneficial effects on memory. A theoretical question arises regarding the passive protection or active stabilization and strengthening of memories during sleep. Ellenbogen et al. (Current Biology, 16, 1290-1294, 2006a) found that sleep can protect memories from retroactive interference, suggesting an active role in memory consolidation. However, subsequent reports have provided mixed results. We conducted an online study via Zoom to replicate and discuss these findings, with our results consistent with Ellenbogen et al. (Current Biology, 16, 1290-1294, 2006a). The study design features and potential confounds are also discussed.
PSYCHONOMIC BULLETIN & REVIEW
(2023)
Article
Hospitality, Leisure, Sport & Tourism
Lei Gao, Arlen Gaba, Peng Li, Richa Saxena, Frank A. J. L. Scheer, Oluwaseun Akeju, Martin K. Rutter, Kun Hu
Summary: This study found that the heart rate recovery (HRR) during exercise is associated with future risk for delirium in middle-to older-aged individuals. Those with lower HRR have a higher risk for developing delirium.
JOURNAL OF SPORT AND HEALTH SCIENCE
(2023)
Article
Endocrinology & Metabolism
Andrew W. McHill, Lindsey S. Brown, Andrew J. K. Phillips, Laura K. Barger, Marta Garaulet, Frank A. J. L. Scheer, Elizabeth B. Klerman
Summary: This study examined the relationship between the timing of energy intake and body composition based on mathematically modeled circadian timing and in-laboratory collected metrics. The findings suggest that the use of mathematically modeled circadian timing can provide similar results to in-laboratory measurements, which may be beneficial in time-based interventions.
Review
Genetics & Heredity
Jacqueline M. Lane, Jingyi Qian, Emmanuel Mignot, Susan Redline, Frank A. J. L. Scheer, Richa Saxena
Summary: Sleep and circadian rhythms are crucial to human health, and studying genetics can provide insight into these processes and their impact on chronic diseases.
NATURE REVIEWS GENETICS
(2022)
Article
Multidisciplinary Sciences
Jingyi Qian, Nina Vujovic, Hoa Nguyen, Nishath Rahman, Su Wei Heng, Stephen Amira, Frank A. J. L. Scheer, Sarah L. Chellappa
Summary: Shift workers have a higher risk of depression and anxiety due to circadian misalignment. Adjusting meal timing can reduce depression-like and anxiety-like mood levels during simulated night work.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biochemical Research Methods
Wei Wang, Robin K. Yuan, Jude F. Mitchell, Kirsi-Marja Zitting, Melissa A. St Hilaire, James K. Wyatt, Frank A. J. L. Scheer, Kenneth P. Wright, Emery N. Brown, Joseph M. Ronda, Elizabeth B. Klerman, Jeanne F. Duffy, Derk-Jan Dijk, Charles A. Czeisler
Summary: Circadian clocks drive cyclic variations in many aspects of physiology, but it is often important to quantify the relative contributions of these factors. Nathaniel Kleitman's forced desynchrony (FD) protocol was designed to assess endogenous circadian rhythmicity and to separate circadian from evoked components of daily rhythms.
Article
Clinical Neurology
Lei Gao, Peng Li, Nicole Gaykova, Xi Zheng, Chenlu Gao, Jacqueline M. Lane, Richa Saxena, Frank A. J. L. Scheer, Martin K. Rutter, Oluwaseun Akeju, Kun Hu
Summary: This study found a bidirectional link between delirium and dementia, suggesting that they may be mutually related. Furthermore, disturbances in the sleep-wake rhythm were associated with an increased risk of delirium and progression to dementia. These findings highlight the importance of sleep-wake rhythm in cognitive function.
ANNALS OF NEUROLOGY
(2023)
Article
Endocrinology & Metabolism
Jingyi Qian, Qian P. Xiao, Michael Walkup, Mace L. Coday, Melissa Erickson, Jessica M. Unick, John Jakicic, Kun Hu, Frank A. J. L. Scheer, Roeland J. W. Middelbeek, Look AHEAD Res Grp
Summary: This study aimed to determine the association of the time-of-day of bout-related moderate-to-vigorous physical activity (bMVPA) with changes in glycemic control in adults with overweight/obesity and type 2 diabetes. The study found that bMVPA performed in the afternoon is associated with improvements in glycemic control, especially within the initial 12 months of an intervention.
Article
Endocrinology & Metabolism
Aviva Y. Cohn, Leilah K. Grant, Margo D. Nathan, Aleta Wiley, Mathena Abramson, Jessica A. Harder, Sybil Crawford, Elizabeth B. Klerman, Frank A. J. L. Scheer, Ursula B. Kaiser, Shadab A. Rahman, Hadine Joffe
Summary: This study investigated the effects of menopause-related sleep disturbance and estradiol decline on cortisol levels in healthy young women. The results showed that sleep fragmentation increased bedtime cortisol levels and decreased cortisol awakening response. Furthermore, suppression of estradiol also decreased bedtime cortisol levels. These findings suggest that menopause-related sleep disturbance and estradiol decline can negatively affect the activity of the hypothalamic-pituitary-adrenal axis.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
(2023)
Article
Endocrinology & Metabolism
Marta Garaulet, Barbara Vizmanos, Teresa Muela, Alejandra Betancourt-Nunez, Maria-angeles Bonmati-Carrion, Celine Vetter, Hassan S. Dashti, Richa Saxena, Frank A. J. L. Scheer
Summary: This study aimed to investigate the relationship between being an evening type and reporting emotional eating behaviors. The results showed that evening types had higher scores on emotional eating and were more likely to be emotional eaters. They also scored higher on disinhibition/overeating and food craving factors. A meta-analysis revealed that being an evening type was associated with a higher score on emotional eating. Furthermore, individuals with late dim-light melatonin onset showed higher scores on emotional eating.
Article
Endocrinology & Metabolism
Barbara Vizmanos, Ana Isabel Cascales, Maria Rodriguez-Martin, Diego Salmeron, Eva Morales, Aurora Aragon-Alonso, Frank A. J. L. Scheer, Marta Garaulet
Summary: This study aimed to investigate the association between siestas and obesity, considering siesta duration and whether siesta traits and/or lifestyle factors mediate this association. The results showed that long siestas were associated with higher BMI, waist circumference, fasting glucose, blood pressure, and increased prevalence of MetS. However, short siestas were associated with a lower probability of elevated blood pressure. Various factors, including smoking, sleep and eating schedules, energy intake, and siesta location, mediated the association of siestas with obesity and MetS.
Article
Clinical Neurology
Rudy W. Chen, Ma Cherrysse Ulsa, Peng Li, Chenlu Gao, Xi Zheng, Jiawei Xu, Yong Luo, Shiqian Shen, Jacqueline Lane, Frank A. J. L. Scheer, Kun Hu, Lei Gao
Summary: This study investigates the association between sleep behavior and opioid-related adverse events (OAEs), finding that short or long sleep duration, frequent daytime sleepiness, insomnia symptoms, and napping are associated with an increased risk of OAEs.
Article
Endocrinology & Metabolism
Carolina Zambrano, Agne Kulyte, Juan Lujan, Belen Rivero-Gutierrez, Fermin Sanchez de Medina, Olga Martinez-Augustin, Mikael Ryden, Frank A. J. L. Scheer, Marta Garaulet
Summary: Habitual napping may disrupt circadian expression patterns of lipase E gene, resulting in impaired lipid mobilization and increased abdominal obesity in nappers.
FRONTIERS IN ENDOCRINOLOGY
(2023)
Article
Endocrinology & Metabolism
Jingyi Qian, Christopher J. J. Morris, Rosanna Caputo, Frank A. J. L. Scheer
Summary: This study examined the impact of circadian misalignment in chronic shift workers and found that it increased ghrelin levels and hunger. However, it did not significantly affect energy expenditure or respiratory exchange ratio.
Review
Sport Sciences
Fabienne Bruggisser, Raphael Knaier, Ralf Roth, Wei Wang, Jingyi Qian, Frank A. J. L. Scheer
Summary: This systematic review and meta-analysis aimed to investigate whether the timing of exercise training in intervention studies affects the degree of improvements in physical performance or health-related outcomes. The results indicate that there is little evidence supporting the hypothesis that training at a specific time of day leads to more improvements compared to other times. However, there is some evidence that training and testing at the same time of day may have a benefit, particularly for performance-related outcomes.
SPORTS MEDICINE-OPEN
(2023)
Article
Biology
H. Craig Heller, Erik Herzog, Allison Brager, Gina Poe, Ravi Allada, Frank Scheer, Mary Carskadon, Horacio O. de la Iglesia, Rockelle Jang, Ashley Montero, Kenneth Wright, Philippe Mouraine, Matthew P. Walker, Namni Goel, John Hogenesch, Russell N. Van Gelder, Lance Kriegsfeld, Cheri Mah, Christopher Colwell, Jamie Zeitzer, Michael Grandner, Chandra L. Jackson, J. Roxanne Prichard, Steve A. Kay, Ketema Paul
Summary: Collegiate athletes face various pressures, including academic obligations, performance impact, health issues, and extensive travel. East-west travel disrupts circadian rhythms and affects sleep quality and health. To address these concerns, we provide suggestions and steps such as bedtime protocols, afternoon naps, and adherence to lighting exposure protocols, and encourage collaboration between athletic departments and experts to promote the health and wellbeing of athletes and staff.
JOURNAL OF BIOLOGICAL RHYTHMS
(2023)