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https://www.readbyqxmd.com/read/28722249/memory-in-3-month-old-infants-benefits-from-a-short-nap
#1
Klára Horváth, Benjamin Hannon, Peter P Ujma, Ferenc Gombos, Kim Plunkett
A broad range of studies demonstrate that sleep has a facilitating role in memory consolidation (see Rasch & Born, ). Whether sleep-dependent memory consolidation is also apparent in infants in their first few months of life has not been investigated. We demonstrate that 3-month-old infants only remember a cartoon face approximately 1.5-2 hours after its first presentation when a period of sleep followed learning. Furthermore, habituation time, that is, the time to become bored with a stimulus shown repetitively, correlated negatively with the density of infant sleep spindles, implying that processing speed is linked to specific electroencephalographic components of sleep...
July 18, 2017: Developmental Science
https://www.readbyqxmd.com/read/28721053/reduced-prefrontal-activation-during-verbal-fluency-task-in-chronic-insomnia-disorder-a-multichannel-near-infrared-spectroscopy-study
#2
Jing-Jing Sun, Xiao-Min Liu, Chen-Yu Shen, Xiao-Qian Zhang, Gao-Xiang Sun, Kun Feng, Bo Xu, Xia-Jin Ren, Xiang-Yun Ma, Po-Zi Liu
PURPOSE: Daytime complaints such as memory and attention deficits and failure to accomplish daily tasks are common in insomnia patients. However, objective psychological tests to detect cognitive impairment are equivocal. Neural function associated with cognitive performance may explain the discrepancy. The aim of this study was to investigate the hemodynamic response patterns of patients with chronic insomnia disorder (CID) using the noninvasive and low-cost functional neuroimaging technique of multichannel near-infrared spectroscopy (NIRS) in order to identify changes of neural function associated with cognitive performance...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28717201/cognitive-brain-responses-during-circadian-wake-promotion-evidence-for-sleep-pressure-dependent-hypothalamic-activations
#3
Carolin F Reichert, Micheline Maire, Virginie Gabel, Antoine U Viola, Thomas Götz, Klaus Scheffler, Markus Klarhöfer, Christian Berthomier, Werner Strobel, Christophe Phillips, Eric Salmon, Christian Cajochen, Christina Schmidt
The two-process model of sleep-wake regulation posits that sleep-wake-dependent homeostatic processes interact with the circadian timing system to affect human behavior. The circadian timing system is fundamental to maintaining stable cognitive performance, as it counteracts growing homeostatic sleep pressure during daytime. Using magnetic resonance imaging, we explored brain responses underlying working memory performance during the time of maximal circadian wake-promotion under varying sleep pressure conditions...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28708800/the-effects-of-white-noise-on-agitated-behaviors-mental-status-and-activities-of-daily-living-in-older-adults-with-dementia
#4
Li-Wei Lin, Shu-Chuan Weng, Hua-Shan Wu, Lu-Jen Tsai, Ya-Ling Lin, Shu-Hui Yeh
BACKGROUND: The aging of society is a global trend, and care of older adults with dementia is an urgent challenge. As dementia progresses, patients exhibit negative emotions, memory disorders, sleep disorders, and agitated behavior. Agitated behavior is one of the most difficult problems for family caregivers and healthcare providers to handle when caring for older adults with dementia. PURPOSE: The aim of this study was to investigate the effectiveness of white noise in improving agitated behavior, mental status, and activities of daily living in older adults with dementia...
July 13, 2017: Journal of Nursing Research: JNR
https://www.readbyqxmd.com/read/28705181/the-impact-of-antiretroviral-therapy-on-symptom-burden-among-hiv-outpatients-with-low-cd4-count-in-rural-uganda-nested-longitudinal-cohort-study
#5
Katie Wakeham, Richard Harding, Jonathan Levin, Rosalind Parkes-Ratanshi, Anatoli Kamali, David G Lalloo
BACKGROUND: Individuals with HIV have a high prevalence of physical and psychological symptoms throughout their disease course. Despite the clinical and public health implications of unresolved pain and symptoms, little is known about the effect of anti-retroviral therapy (ART) on these outcomes. This study aimed to assess the impact on symptom burden for the year after ART initiation in individuals with a CD4 count <200 cells/uL in Uganda. METHODS: HIV-infected, ART-naıve adults referred from voluntary testing and counseling services in rural Uganda for enrollment into a randomized controlled trial to test fluconazole as primary prophylaxis against cryptococcal disease were invited to complete the Memorial Symptom Assessment Scale-Short Form (MSAS-SF) prior to commencing ART and at two subsequent follow up visits...
July 13, 2017: BMC Palliative Care
https://www.readbyqxmd.com/read/28699777/caring-for-an-individual-with-mild-cognitive-impairment-a-qualitative-perspective-of-health-related-quality-of-life-from-caregivers
#6
Noelle E Carlozzi, Carey W Sherman, Kaley Angers, Mitchell P Belanger, Amy M Austin, Kelly A Ryan
OBJECTIVES: Little is known regarding the effect that caring for an individual with Mild Cognitive Impairment (MCI) has on health-related quality of life (HRQOL). We sought to identify the most important aspects of HRQOL related to caring for an individual with MCI. METHODS: Six focus groups were conducted with caregivers of individuals with MCI (n = 32). Qualitative frequency analysis was used to analyze the data. RESULTS: Findings indicated that caregivers most frequently discussed social health, including changes in social roles and an increased need for social support (51...
July 12, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28698776/the-sleeping-brain
#7
Chiara Cirelli, Giulio Tononi
The role of sleep has long baffled scientists, but the latest research is providing new indicators about what it does for both the brain and body. While scientists believe that sleep re-energizes the body's cells, clears waste from the brain, and supports learning and memory, much still needs to be learned about the part it plays in regulating mood, appetite and libido. Source/Shutterstock.
May 2017: Cerebrum: the Dana Forum on Brain Science
https://www.readbyqxmd.com/read/28697944/vocabulary-learning-benefits-from-rem-after-slow-wave-sleep
#8
Laura J Batterink, Carmen Westerberg, Ken A Paller
Memory reactivation during slow-wave sleep (SWS) influences the consolidation of recently acquired knowledge. This reactivation occurs spontaneously during sleep but can also be triggered by presenting learning-related cues, a technique known as targeted memory reactivation (TMR). Here we examined whether TMR can improve vocabulary learning. Participants learned the meanings of 60 novel words. Auditory cues for half the words were subsequently presented during SWS in an afternoon nap. Memory performance for cued versus uncued words did not differ at the group level but was systematically influenced by REM sleep duration...
July 8, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28695173/identification-of-symptom-clusters-in-cancer-patients-at-palliative-care-clinic
#9
Gülçin Şenel Özalp, Neşe Uysal, Gonca Oğuz, Nesteren Koçak, Şerife Karaca, Nihan Kadıoğulları
OBJECTIVE: Cancer patients often experience a large number of symptoms together. The aim of this study is to determine the symptom clusters in cancer patients at palliative care clinic. METHODS: Hundred and seventy consecutive patients were enrolled in the study. Memorial Symptom Assessment Scale was used for symptom assessment of the patients. RESULTS: The most experienced symptoms by the patients during the past week before hospitalization in palliative care clinic were lack of energy (95...
July 2017: Asia-Pacific Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28694754/using-curcumin-to-prevent-structural-and-behavioral-changes-of-medial-prefrontal-cortex-induced-by-sleep-deprivation-in-rats
#10
Ali Noorafshan, Fatemeh Karimi, Saied Karbalay-Doust, Ali Mohammad Kamali
Sleep Deprivation (SD) is known to result in a range of neurological consequences in chronically-afflicted subjects. Curcumin, a natural substance, has neuroprotective properties. This study aimed to evaluate the effects of curcumin on the medial Prefrontal Cortex (mPFC) of SD rats. Male rats were arbitrarily assigned to nine groups, including control, curcumin (100 mg/kg/day), olive oil, SD, SD+curcumin, SD+olive oil, grid, grid+curcumin, and grid+olive oil groups. SD was induced by a multiplatform box containing water...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28694337/targeted-memory-reactivation-during-sleep-adaptively-promotes-the-strengthening-or-weakening-of-overlapping-memories
#11
J P Oyarzún, J Morís, D Luque, R de Diego-Balaguer, L Fuentemilla
System memory consolidation is conceptualized as an active process whereby newly encoded memory representations are strengthened through selective memory reactivation during sleep. However, our learning experience is highly overlapping in content (i.e., shares common elements), and memories of these events are organized in an intricate network of overlapping associated events. It remains to be explored whether and how selective memory reactivation during sleep has an impact on these overlapping memories acquired during awake time...
July 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28689981/thalamic-spindles-promote-memory-formation-during-sleep-through-triple-phase-locking-of-cortical-thalamic-and-hippocampal-rhythms
#12
Charles-Francois V Latchoumane, Hong-Viet V Ngo, Jan Born, Hee-Sup Shin
While the interaction of the cardinal rhythms of non-rapid-eye-movement (NREM) sleep-the thalamo-cortical spindles, hippocampal ripples, and the cortical slow oscillations-is thought to be critical for memory consolidation during sleep, the role spindles play in this interaction is elusive. Combining optogenetics with a closed-loop stimulation approach in mice, we show here that only thalamic spindles induced in-phase with cortical slow oscillation up-states, but not out-of-phase-induced spindles, improve consolidation of hippocampus-dependent memory during sleep...
July 1, 2017: Neuron
https://www.readbyqxmd.com/read/28688961/active-sleep-is-associated-with-the-face-preference-in-the-newborns-who-familiarized-with-a-responsive-face
#13
Marco Cecchini, Maria Elena Iannoni, Paola Aceto, Eleonora Baroni, Cinzia Di Vito, Carlo Lai
Aim of this study was to investigate the preferential looking behaviour, subsequent to a familiarization task (8-min) with a previously responsive or motionless face, before and after a sleep cycle. Moreover, the role of the active sleep in memory consolidation of the responsive or motionless faces was explored. Hypotheses were that the newborns undergoing a motionless familiarization will exhibit a novelty effect (preference for the novel face) whereas the newborns undergoing a responsive familiarization will show a familiarity effect (preference for the known face) before and after the sleep cycle; moreover, the amount of active sleep will be associated with the looking time at the known face after a sleep cycle...
July 6, 2017: Infant Behavior & Development
https://www.readbyqxmd.com/read/28687311/selective-changes-in-locomotor-activity-in-mice-due-to-low-intensity-microwaves-amplitude-modulated-in-the-eeg-spectral-domain
#14
Vincent Van Eeghem, Anissa El Arfani, Arta Anthoula, Laura Walrave, Ali Pourkazemi, Eduard Bentea, Thomas Demuyser, Ilse Smolders, Johan Stiens
Despite the numerous benefits of microwave applications in our daily life, microwaves were associated with diverse neurological complaints such as headaches and impaired sleep patterns, and changes in the electroencephalogram (EEG). To which extent microwaves influence the brain function remains unclear. This exploratory study assessed the behavior and neurochemistry in mice immediately or 4 weeks after a 6-day exposure to low-intensity 10 GHz microwaves with an amplitude modulation (AM) of 2 or 8 Hz. These modulation frequencies of 2 and 8 Hz are situated within the delta and theta-alpha frequency bands in the EEG spectrum and are associated with sleep and active behavior, respectively...
July 4, 2017: Neuroscience
https://www.readbyqxmd.com/read/28682878/the-involvement-of-potassium-channel-ork1-in-short-term-memory-and-sleep-in-drosophila
#15
Xiaoyan Zhang, Yabin Zheng, Qingguo Ren, Hong Zhou
BACKGROUND: The sleep and cognitive dysfunction are common in major depressive disorders (MDDs). Recently, the 2-pore domain potassium channel twik-related K(+) channel 1 (TREK-1) has been identified to be closely related to the etiology of MDD. However, whether TREK-1 is involved in the regulation of sleep and cognition is still unknown. METHODS: The present study tried to dissect the role of outwardly rectifying K+ channel-1 (ORK1) (TREK-1 homolog in Drosophila) in sleep and cognition in Drosophila...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28681715/motor-cortex-trns-improves-pain-affective-and-cognitive-impairment-in-patients-with-fibromyalgia-preliminary-results-of-a-randomised-sham-controlled-trial
#16
Massimiliano Curatolo, Giuseppe La Bianca, Giuseppe Cosentino, Roberta Baschi, Giuseppe Salemi, Rossella Talotta, Marcello Romano, Giovanni Triolo, Marina De Tommaso, Brigida Fierro, Filippo Brighina
OBJECTIVES: Fibromyalgia (FM) is a clinical syndrome characterised by widespread musculoskeletal pain, chronic fatigue, cognitive deficits, and sleep and mood disorders. The effectiveness of most pharmacological treatments is limited, and there is a need for new, effective and well-tolerated therapies. It has recently been shown that transcranial direct-current stimulation (tDCS) of the motor cortex reduces pain, and that tDCS of the dorso-lateral prefrontal cortex (DLPFC) improves anxiety, depression and cognitive impairment in FM patients...
May 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28680447/a-review-of-dietary-ziziphus-jujuba-fruit-jujube-developing-health-food-supplements-for-brain-protection
#17
REVIEW
Jianping Chen, Xiaoyan Liu, Zhonggui Li, Airong Qi, Ping Yao, Zhongyu Zhou, Tina T X Dong, Karl W K Tsim
The fruits of Ziziphus jujuba, known as jujube or Chinese date, are being consumed all around the world because of their health benefits, as both food and herbal medicine. Traditionally, one of the main functions of jujube, as described in herbal medicine, is to benefit our brain by calming down the mind and improving quality of sleep. Here, the activities of jujubes on nervous system are summarized and discussed. Jujube possesses neuroprotective activities, including protecting neuronal cells against neurotoxin stress, stimulating neuronal differentiation, increasing expression of neurotrophic factors, and promoting memory and learning...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28680341/effects-of-sleep-deprivation-on-cognitive-and-physical-performance-in-university-students
#18
Yusuf Patrick, Alice Lee, Oishik Raha, Kavya Pillai, Shubham Gupta, Sonika Sethi, Felicite Mukeshimana, Lothaire Gerard, Mohammad U Moghal, Sohag N Saleh, Susan F Smith, Mary J Morrell, James Moss
Sleep deprivation is common among university students, and has been associated with poor academic performance and physical dysfunction. However, current literature has a narrow focus in regard to domains tested, this study aimed to investigate the effects of a night of sleep deprivation on cognitive and physical performance in students. A randomized controlled crossover study was carried out with 64 participants [58% male (n = 37); 22 ± 4 years old (mean ± SD)]. Participants were randomized into two conditions: normal sleep or one night sleep deprivation...
2017: Sleep and Biological Rhythms
https://www.readbyqxmd.com/read/28678710/deepsleepnet-a-model-for-automatic-sleep-stage-scoring-based-on-raw-single-channel-eeg
#19
Akara Supratak, Hao Dong, Chao Wu, Yike Guo
The present study proposes a deep learning model, named DeepSleepNet, for automatic sleep stage scoring based on raw single-channel EEG. Most of the existing methods rely on hand-engineered features which require prior knowledge of sleep analysis. Only a few of them encode the temporal information such as transition rules, which is important for identifying the next sleep stages, into the extracted features. In the proposed model, we utilize Convolutional Neural Networks to extract timeinvariant features, and bidirectional-Long Short-Term Memory to learn transition rules among sleep stages automatically from EEG epochs...
June 28, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28677325/memory-encoding-is-impaired-after-multiple-nights-of-partial-sleep-restriction
#20
James N Cousins, Karen Sasmita, Michael W L Chee
Sleep is important for normative cognitive functioning. A single night of total sleep deprivation can reduce the capacity to encode new memories. However, it is unclear how sleep restriction during several consecutive nights affects memory encoding. To explore this, we employed a parallel-group design with 59 adolescents randomized into sleep-restricted (SR) and control groups. Both groups were afforded 9 h time in bed (TIB) for 2 baseline nights, followed by 5 consecutive nights of 5 h TIB for the SR group (n = 29) and 9 h TIB for the control group (n = 30)...
July 5, 2017: Journal of Sleep Research
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