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rhythmic entrainment

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https://www.readbyqxmd.com/read/29146445/interplay-between-daily-rhythmic-serum-mediated-bacterial-killing-activity-and-immune-defence-factors-in-rainbow-trout-oncorhynchus-mykiss
#1
Carlo C Lazado, Manuel Gesto, Lone Madsen, Alfred Jokumsen
Circadian rhythm is emerging as an important regulator of immune functions. However, there is a paucity of information on the influence of this biological phenomenon in the antimicrobial factors in teleost fish. This study investigated the dynamics and interplay of serum-mediated bacterial killing activity and immune defence factors throughout the light:dark (LD) cycle in rainbow trout (Oncorhynchus mykiss). The juvenile fish came from two different emergence time fractions (i.e., late and early) that were believed to exhibit behavioural and physiological differences...
November 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29142322/bilateral-5%C3%A2-hz-transcranial-alternating-current-stimulation-on-fronto-temporal-areas-modulates-resting-state-eeg
#2
Aurora D'Atri, Claudia Romano, Maurizio Gorgoni, Serena Scarpelli, Valentina Alfonsi, Michele Ferrara, Fabio Ferlazzo, Paolo Maria Rossini, Luigi De Gennaro
Rhythmic non-invasive brain stimulations are promising tools to modulate brain activity by entraining neural oscillations in specific cortical networks. The aim of the study was to assess the possibility to influence the neural circuits of the wake-sleep transition in awake subjects via a bilateral transcranial alternating current stimulation at 5 Hz (θ-tACS) on fronto-temporal areas. 25 healthy volunteers participated in two within-subject sessions (θ-tACS and sham), one week apart and in counterbalanced order...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29099875/daily-rhythms-and-enrichment-patterns-in-the-transcriptome-of-the-behavior-manipulating-parasite-ophiocordyceps-kimflemingiae
#3
Charissa de Bekker, Ian Will, David P Hughes, Andreas Brachmann, Martha Merrow
Various parasite-host interactions that involve adaptive manipulation of host behavior display time-of-day synchronization of certain events. One example is the manipulated biting behavior observed in Carpenter ants infected with Ophiocordyceps unilateralis sensu lato. We hypothesized that biological clocks play an important role in this and other parasite-host interactions. In order to identify candidate molecular clock components, we used two general strategies: bioinformatics and transcriptional profiling...
2017: PloS One
https://www.readbyqxmd.com/read/29093545/entrainment-of-voluntary-movement-to-undetected-auditory-regularities
#4
Aaron Schurger, Nathan Faivre, Leila Cammoun, Bianca Trovó, Olaf Blanke
In physics "entrainment" refers to the synchronization of two coupled oscillators with similar fundamental frequencies. In behavioral science, entrainment refers to the tendency of humans to synchronize their movements with rhythmic stimuli. Here, we asked whether human subjects performing a tapping task would entrain their tapping to an undetected auditory rhythm surreptitiously introduced in the guise of ambient background noise in the room. Subjects performed two different tasks, one in which they tapped their finger at a steady rate of their own choosing and one in which they performed a single abrupt finger tap on each trial after a delay of their own choosing...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29049001/effects-of-melatonin-on-mechanisms-involved-in-hypertension-using-human-umbilical-vein-endothelial-cells
#5
Guangfang Shao, Suping Zhang, Jihua Nie, Jianxiang Li, Jian Tong
Changes in diurnal rhythmicity in blood pressure (BP) are associated with hypertension and consequent cardiovascular damage. The involvement of diurnal rhythmicity as a pathogenic factor in hypertension is not fully understood. Since the hormone melatonin (MLT) regulates circadian rhythm, it was also of interest to determine whether this hormone played a role in hypertension-related alterations in circadian rhythm. Thus the aim of this study was to examine the mechanisms underlying MLT-mediated antihypertension...
October 19, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/29044763/theta-band-oscillations-reflect-more-than-entrainment-behavioral-and-neural-evidence-demonstrate-an-active-chunking-process
#6
Xiangbin Teng, Xing Tian, Keith Doelling, David Poeppel
Parsing continuous acoustic streams into perceptual units is fundamental to auditory perception. Previous studies have uncovered a cortical entrainment mechanism in the delta and theta bands (~1-8 Hz) that correlates with formation of perceptual units in speech, music, and other quasi-rhythmic stimuli. Whether cortical oscillations in the delta-theta bands are passively entrained by regular acoustic patterns or play an active role in parsing the acoustic stream is debated. Here we investigate cortical oscillations using novel stimuli with 1/f modulation spectra...
October 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29035690/the-psychology-of-music-rhythm-and-movement
#7
Daniel J Levitin, Jessica A Grahn, Justin London
The urge to move to music is universal among humans. Unlike visual art, which is manifest across space, music is manifest across time. When listeners get carried away by the music, either through movement (such as dancing) or through reverie (such as trance), it is usually the temporal qualities of the music- its pulse, tempo, and rhythmic patterns-that put them in this state. In this article, we review studies addressing rhythm, meter, movement, synchronization, entrainment, the perception of groove, and other temporal factors that constitute a first step to understanding how and why music literally moves us...
October 16, 2017: Annual Review of Psychology
https://www.readbyqxmd.com/read/29032081/protein-malnutrition-after-weaning-disrupts-peripheral-clock-and-daily-insulin-secretion-in-mice
#8
Patricia Cristine Borck, Thiago Martins Batista, Jean Franciesco Vettorazzi, Rafael Ludemann Camargo, Antonio Carlos Boschero, Elaine Vieira, Everardo Magalhães Carneiro
Changes in nutritional state may alter circadian rhythms through alterations in expression of clock genes. Protein deficiency has a profound effect on body metabolism, but the effect of this nutrient restriction after weaning on biological clock has not been explored. Thus, this study aims to investigate whether the protein restriction affects the daily oscillation in the behavior and metabolic rhythms, as well as expression of clock genes in peripheral tissues. Male C57BL/6 J mice, after weaning, were fed a normal-protein (NP) diet or a low-protein (LP) diet for 8 weeks...
September 4, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29028359/complex-interaction-between-circadian-rhythm-and-diet-on-bile-acid-homeostasis-in-male-rats
#9
Hannah M Eggink, Johanneke E Oosterman, Paul de Goede, Emmely M de Vries, Ewout Foppen, Martijn Koehorst, Albert K Groen, Anita Boelen, Johannes A Romijn, Susanne E la Fleur, Maarten R Soeters, Andries Kalsbeek
Desynchronization between the master clock in the brain, which is entrained by (day) light, and peripheral organ clocks, which are mainly entrained by food intake, may have negative effects on energy metabolism. Bile acid metabolism follows a clear day/night rhythm. We investigated whether in rats on a normal chow diet the daily rhythm of plasma bile acids and hepatic expression of bile acid metabolic genes is controlled by the light/dark cycle or the feeding/fasting rhythm. In addition, we investigated the effects of high caloric diets and time-restricted feeding on daily rhythms of plasma bile acids and hepatic genes involved in bile acid synthesis...
October 13, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28985504/clock-acetylates-ass1-to-drive-circadian-rhythm-of-ureagenesis
#10
Ran Lin, Yan Mo, Haihong Zha, Zhipeng Qu, Pancheng Xie, Zheng-Jiang Zhu, Ying Xu, Yue Xiong, Kun-Liang Guan
In addition to responding to environmental entrainment with diurnal variation, metabolism is also tightly controlled by cell-autonomous circadian clock. Extensive studies have revealed key roles of transcription in circadian control. Post-transcriptional regulation for the rhythmic gating of metabolic enzymes remains elusive. Here, we show that arginine biosynthesis and subsequent ureagenesis are collectively regulated by CLOCK (circadian locomotor output cycles kaput) in circadian rhythms. Facilitated by BMAL1 (brain and muscle Arnt-like protein), CLOCK directly acetylates K165 and K176 of argininosuccinate synthase (ASS1) to inactivate ASS1, which catalyzes the rate-limiting step of arginine biosynthesis...
October 5, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28981604/an-individual-12-h-shift-of-the-light-dark-cycle-alters-the-pancreatic-and-duodenal-circadian-rhythm-and-digestive-function
#11
Liang Xu, Tao Wu, Haifeng Li, Yinhua Ni, Zhengwei Fu
In mammals, behavioral and physiological rhythms are controlled by circadian clocks which are entrained by environmental light and food signals. However, how the environmental cues affect digestive tract's circadian clock remains poorly understood. Therefore, in order to elucidate the effect of light cue on the resetting of the peripheral clocks, we investigated the expressions of clock genes (Bmal1, Cry1, Rev-erbα, Per1, and Per2) and digestive function genes (Cck, Cck-1r, Sct, Sctr, and Ctrb1) in the pancreas and duodenum of rats after the light-dark (LD) cycle reversal for 7 days...
October 1, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28978665/medial-frontal-theta-is-entrained-to-rewarded-actions
#12
Linda M Amarante, Marcelo S Caetano, Mark Laubach
Rodents lick to consume fluids. The reward value of ingested fluids is likely to be encoded by neuronal activity entrained to the lick cycle. Here, we investigated relationships between licking and reward signaling by the medial frontal cortex (MFC), a key cortical region for reward-guided learning and decision-making. Multielectrode recordings of spike activity and field potentials were made in male rats as they performed an incentive contrast licking task. Rats received access to higher- and lower-value sucrose rewards over alternating 30 s periods...
November 1, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28959191/distinct-temporal-coordination-of-spontaneous-population-activity-between-basal-forebrain-and-auditory-cortex
#13
Josue G Yague, Tomomi Tsunematsu, Shuzo Sakata
The basal forebrain (BF) has long been implicated in attention, learning and memory, and recent studies have established a causal relationship between artificial BF activation and arousal. However, neural ensemble dynamics in the BF still remains unclear. Here, recording neural population activity in the BF and comparing it with simultaneously recorded cortical population under both anesthetized and unanesthetized conditions, we investigate the difference in the structure of spontaneous population activity between the BF and the auditory cortex (AC) in mice...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28943842/when-non-dominant-is-better-than-dominant-kinesiotape-modulates-asymmetries-in-timed-performance-during-a-synchronization-continuation-task
#14
Riccardo Bravi, Erez J Cohen, Alessio Martinelli, Anna Gottard, Diego Minciacchi
There is a growing consensus regarding the specialization of the non-dominant limb (NDL)/hemisphere system to employ proprioceptive feedback when executing motor actions. In a wide variety of rhythmic tasks the dominant limb (DL) has advantages in speed and timing consistency over the NDL. Recently, we demonstrated that the application of Kinesio(®) Tex (KT) tape, an elastic therapeutic device used for treating athletic injuries, improves significantly the timing consistency of isochronous wrist's flexion-extensions (IWFEs) of the DL...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28934261/light-entrainment-of-the-murine-intraocular-pressure-circadian-rhythm-utilizes-non-local-mechanisms
#15
Shunsuke Tsuchiya, Ethan D Buhr, Tomomi Higashide, Kazuhisa Sugiyama, Russell N Van Gelder
PURPOSE: Intraocular pressure (IOP) is known to have a strong circadian rhythm, yet how light/dark cycles entrain this rhythm is unknown. The purpose of this study was to assess whether, like the retina, the mammalian ciliary body and IOP clocks have an intrinsic ability to entrain to light/dark cycles. METHODS: Iris-ciliary body complexes were obtained from period2:luciferase (PER2::LUC) mice and cultured to measure bioluminescence rhythmicity. Pairs of the iris-ciliary body complex were exposed to antiphasic 9:15 h light/dark cycle in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28931569/individual-alpha-peak-frequency-predicts-10-hz-flicker-effects-on-selective-attention
#16
Rasa Gulbinaite, Tara van Viegen, Martijn Wieling, Michael X Cohen, Rufin VanRullen
Rhythmic visual stimulation ("flicker") is primarily used to "tag" processing of low-level visual and high-level cognitive phenomena. However, preliminary evidence suggests that flicker may also entrain endogenous brain oscillations, thereby modulating cognitive processes supported by those brain rhythms. Here we tested the interaction between 10 Hz flicker and endogenous alpha-band (∼10 Hz) oscillations during a selective visuospatial attention task. We recorded EEG from human participants (both genders) while they performed a modified Eriksen flanker task in which distractors and targets flickered within (10 Hz) or outside (7...
October 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28912746/the-role-of-slow-speech-amplitude-envelope-for-speech-processing-and-reading-development
#17
Paula Ríos-López, Monika T Molnar, Mikel Lizarazu, Marie Lallier
This study examined the putative link between the entrainment to the slow rhythmic structure of speech, speech intelligibility and reading by means of a behavioral paradigm. Two groups of 20 children (Grades 2 and 5) were asked to recall a pseudoword embedded in sentences presented either in quiet or noisy listening conditions. Half of the sentences were primed with their syllabic and prosodic amplitude envelope to determine whether a boost in auditory entrainment to these speech features enhanced pseudoword intelligibility...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28910668/specific-contributions-of-basal-ganglia-and-cerebellum-to-the-neural-tracking-of-rhythm
#18
Sylvie Nozaradan, Michael Schwartze, Christian Obermeier, Sonja A Kotz
How specific brain networks track rhythmic sensory input over time remains a challenge in neuroimaging work. Here we show that subcortical areas, namely the basal ganglia and the cerebellum, specifically contribute to the neural tracking of rhythm. We tested patients with focal lesions in either of these areas and healthy controls by means of electroencephalography (EEG) while they listened to rhythmic sequences known to induce selective neural tracking at a frequency corresponding to the most-often perceived pulse-like beat...
October 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28893860/coordination-between-differentially-regulated-circadian-clocks-generates-rhythmic-behavior
#19
Deniz Top, Michael W Young
Specialized groups of neurons in the brain are key mediators of circadian rhythms, receiving daily environmental cues and communicating those signals to other tissues in the organism for entrainment and to organize circadian physiology. In Drosophila, the "circadian clock" is housed in seven neuronal clusters, which are defined by their expression of the main circadian proteins, Period, Timeless, Clock, and Cycle. These clusters are distributed across the fly brain and are thereby subject to the respective environments associated with their anatomical locations...
September 11, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28893605/oscillator-networks-with-tissue-specific-circadian-clocks-in-plants
#20
REVIEW
Keisuke Inoue, Takashi Araki, Motomu Endo
Many organisms rely on circadian clocks to synchronize their biological processes with the 24-hour rotation of the earth. In mammals, the circadian clock consists of a central clock in the suprachiasmatic nucleus and peripheral clocks in other tissues. The central clock is tightly coupled to synchronize rhythmicity and can organize peripheral clocks through neural and hormonal signals. In contrast to mammals, it has long been assumed that the circadian clocks in each plant cell is able to be entrained by external light, and they are only weakly coupled to each other...
September 8, 2017: Seminars in Cell & Developmental Biology
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