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https://www.readbyqxmd.com/read/28721279/age-related-circadian-disorganization-caused-by-sympathetic-dysfunction-in-peripheral-clock-regulation
#1
Yu Tahara, Yuta Takatsu, Takuya Shiraishi, Yosuke Kikuchi, Mayu Yamazaki, Hiroaki Motohashi, Aya Muto, Hiroyuki Sasaki, Atsushi Haraguchi, Daisuke Kuriki, Takahiro J Nakamura, Shigenobu Shibata
The ability of the circadian clock to adapt to environmental changes is critical for maintaining homeostasis, preventing disease, and limiting the detrimental effects of aging. To date, little is known about age-related changes in the entrainment of peripheral clocks to external cues. We therefore evaluated the ability of the peripheral clocks of the kidney, liver, and submandibular gland to be entrained by external stimuli including light, food, stress, and exercise in young versus aged mice using in vivo bioluminescence monitoring...
2017: NPJ Aging and Mechanisms of Disease
https://www.readbyqxmd.com/read/28716611/predictability-of-action-sub-steps-modulates-motor-system-activation-during-the-observation-of-goal-directed-actions
#2
Ricarda Braukmann, Harold Bekkering, Margreeth Hidding, Edita Poljac, Jan K Buitelaar, Sabine Hunnius
Action perception and execution are linked in the human motor system, and researchers have proposed that this action-observation matching system underlies our ability to predict observed behavior. If the motor system is indeed involved in the generation of action predictions, activation should be modulated by the degree of predictability of an observed action. This study used EEG and eye-tracking to investigate whether and how predictability of an observed action modulates motor system activation as well as behavioral predictions in the form of anticipatory eye-movements...
July 14, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28715353/learned-expectations-and-uncertainty-facilitate-pain-during-classical-conditioning
#3
Veronique A Taylor, Luke Chang, Pierre Rainville, Mathieu Roy
Pain spontaneously activates adaptive and dynamic learning processes affecting the anticipation of, and the responses to, future pain. Computational models of associative learning effectively capture the production and ongoing changes in conditioned anticipatory responses (eg, skin conductance response), but the impact of this dynamic process on unconditional pain responses remains poorly understood. Here, we investigated the dynamic modulation of pain and the nociceptive flexion reflex by fear learning in healthy human adult participants undergoing a classical conditioning procedure involving an acquisition, reversal and extinction phase...
August 2017: Pain
https://www.readbyqxmd.com/read/28714434/altered-interoceptive-activation-before-during-and-after-aversive-breathing-load-in-women-remitted-from-anorexia-nervosa
#4
L A Berner, A N Simmons, C E Wierenga, A Bischoff-Grethe, M P Paulus, U F Bailer, A V Ely, W H Kaye
BACKGROUND: The neural mechanisms of anorexia nervosa (AN), a severe and chronic psychiatric illness, are still poorly understood. Altered body state processing, or interoception, has been documented in AN, and disturbances in aversive interoception may contribute to distorted body perception, extreme dietary restriction, and anxiety. As prior data implicate a potential mismatch between interoceptive expectation and experience in AN, we examined whether AN is associated with altered brain activation before, during, and after an unpleasant interoceptive state change...
July 17, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28713254/short-term-effects-of-thoracic-spine-manipulation-on-the-biomechanical-organisation-of-gait-initiation-a-randomized-pilot-study
#5
Sébastien Ditcharles, Eric Yiou, Arnaud Delafontaine, Alain Hamaoui
Speed performance during gait initiation is known to be dependent on the capacity of the central nervous system to generate efficient anticipatory postural adjustments (APA). According to the posturo-kinetic capacity (PKC) concept, any factor enhancing postural chain mobility and especially spine mobility, may facilitate the development of APA and thus speed performance. "Spinal Manipulative Therapy High-Velocity, Low-Amplitude" (SMT-HVLA) is a healing technique applied to the spine which is routinely used by healthcare practitioners to improve spine mobility...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28712437/the-long-term-effects-of-consumer-directed-health-plans-on-preventive-care-use
#6
Matthew D Eisenberg, Amelia M Haviland, Ateev Mehrotra, Peter J Huckfeldt, Neeraj Sood
"Consumer-Directed" Health Plans (CDHPs), those with high deductibles and personal medical accounts, have been shown to reduce health care spending. The impact of CDHPs on preventive care is unclear. On the one hand CDHPs might increase use of preventive care as such care is exempt from the deductible. However, CDHPs also decrease visits to physicians which might results in less screening. Prior research has found conflicting results. In this study, using data from 37 employers we examine the effects of CDHPs on the use of cancer screenings up to three years after the initial CDHP offering with ITT and LATE approaches...
June 27, 2017: Journal of Health Economics
https://www.readbyqxmd.com/read/28711115/anticipatory-processing-maladaptive-attentional-focus-and-postevent-processing-for-interactional-and-performance-situations-treatment-response-and-relationships-with-symptom-change-for-individuals-with-social-anxiety-disorder
#7
Quincy J J Wong, Bree Gregory, Lauren F McLellan, Maria Kangas, Maree J Abbott, Leigh Carpenter, Peter M McEvoy, Lorna Peters, Ronald M Rapee
Anticipatory processing, maladaptive attentional focus, and postevent processing are key cognitive constructs implicated in the maintenance of social anxiety disorder (SAD). The current study examined how treatment for SAD concurrently affects these three cognitive maintaining processes and how these processes are associated with each other as well as with symptom change from pre- to posttreatment. The sample consisted of 116 participants with SAD receiving group cognitive behavioral therapy. All three cognitive maintaining processes were measured relative to a speech task and again relative to a conversation task...
September 2017: Behavior Therapy
https://www.readbyqxmd.com/read/28707700/deleting-the-arntl-clock-gene-in-the-granular-layer-of-the-mouse-cerebellum-impact-on-the-molecular-circadian-clockwork
#8
Tenna Bering, Mikkel Bloss Carstensen, Martin Fredensborg Rath
The suprachiasmatic nucleus houses the central circadian clock and is characterized by the timely regulated expression of clock genes. However, neurons of the cerebellar cortex also contain a circadian oscillator with circadian expression of clock genes being controlled by the suprachiasmatic nucleus. It has been suggested that the cerebellar circadian oscillator is involved in food anticipation, but direct molecular evidence of the role of the circadian oscillator of the cerebellar cortex is currently unavailable...
July 14, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28704485/the-role-of-proximal-body-information-on-anticipatory-judgment-in-tennis-using-graphical-information-richness
#9
Kazunobu Fukuhara, Hirofumi Ida, Takahiro Ogata, Motonobu Ishii, Takahiro Higuchi
OBJECTIVE: Recent studies have reported that skilled tennis players are likely to use proximal body information for anticipating the direction of their opponent's forehand shot. However, in these studies, the visual stimuli did not include visual information about the ball. Skilled players may have used proximal information owing to the lack of distal information. To address this issue, we developed a novel methodological approach using computer graphics (CG) images in which the entire body was presented by a combination of point-light display (i...
2017: PloS One
https://www.readbyqxmd.com/read/28699099/fertility-intentions-and-residential-relocations
#10
Sergi Vidal, Johannes Huinink, Michael Feldhaus
This research addresses the question of whether fertility intentions (before conception) are associated with residential relocations and the distance of the relocation. We empirically tested this using data from two birth cohorts (aged 24-28 and 34-38 in the first survey wave) of the German Family Panel (pairfam) and event history analysis. Bivariate analyses showed that coupled individuals relocated at a higher rate if they intended to have a(nother) child. We found substantial heterogeneity according to individuals' age and parental status, particularly for outside-town relocations...
July 11, 2017: Demography
https://www.readbyqxmd.com/read/28697268/the-cost-of-hospital-admission-brief-resolved-unexplained-events
#11
Justin Triemstra
The modern health care system continues to expand at a meteoric rate with ever-increasing technological advancements. However, with these advancements come unsustainably rising costs and occasionally unintended, avoidable harm. In this article, we use a brief resolved unexplained event (BRUE) to illustrate how recent guidelines can help physicians practice value in this modern health care system. A BRUE is a common pediatric problem that is seen in ambulatory and emergency department settings. Infants presenting with a BRUE can be separated into low- and high-risk groups per recent guidelines...
July 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28688822/visual-food-cues-decrease-postprandial-glucose-concentrations-in-lean-and-obese-men-without-affecting-food-intake-and-related-endocrine-parameters
#12
Swantje Brede, Annika Sputh, Ann-Christin Hartmann, Manfred Hallschmid, Hendrik Lehnert, Johanna Klement
The abundance of highly palatable food items in our environment represents a possible cause of overconsumption. Neuroimaging studies in humans have demonstrated that watching pictures of food increases activation in brain areas involved in homeostatic and hedonic food cue processing. Nevertheless, the impact of food cues on actual food intake and metabolic parameters has not been systematically investigated. We tested the hypothesis that watching high-calorie food cues increases food intake and modifies anticipatory blood parameters in lean and especially in obese men...
July 5, 2017: Appetite
https://www.readbyqxmd.com/read/28688367/postural-motor-learning-in-parkinson-s-disease-the-effect-of-practice-on-continuous-compensatory-postural-regulation
#13
Karen Van Ooteghem, James S Frank, Fay B Horak
INTRODUCTION: Although balance training is considered the most effective treatment for balance impairments in Parkinson's disease (PD), few studies have examined if learning for balance control remains intact with PD. This study aimed to determine if learning for automatic postural responses is preserved in people with PD. METHODS: Eleven participants with moderate PD (68±6.4years; H&Y: 2-3) on their usual medication maintained balance on a platform that oscillated forward and backward with variable amplitude and constant frequency...
June 28, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28683271/distinct-roles-for-the-amygdala-and-orbitofrontal-cortex-in-representing-the-relative-amount-of-expected-reward
#14
Rebecca A Saez, Alexandre Saez, Joseph J Paton, Brian Lau, C Daniel Salzman
The same reward can possess different motivational meaning depending upon its magnitude relative to other rewards. To study the neurophysiological mechanisms mediating assignment of motivational meaning, we recorded the activity of neurons in the amygdala and orbitofrontal cortex (OFC) of monkeys during a Pavlovian task in which the relative amount of liquid reward associated with one conditioned stimulus (CS) was manipulated by changing the reward amount associated with a second CS. Anticipatory licking tracked relative reward magnitude, implying that monkeys integrated information about recent rewards to adjust the motivational meaning of a CS...
July 5, 2017: Neuron
https://www.readbyqxmd.com/read/28674489/multi-finger-interaction-and-synergies-in-finger-flexion-and-extension-force-production
#15
Jaebum Park, Dayuan Xu
The aim of this study was to discover finger interaction indices during single-finger ramp tasks and multi-finger coordination during a steady state force production in two directions, flexion, and extension. Furthermore, the indices of anticipatory adjustment of elemental variables (i.e., finger forces) prior to a quick pulse force production were quantified. It is currently unknown whether the organization and anticipatory modulation of stability properties are affected by force directions and strengths of in multi-finger actions...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28673716/contribution-of-the-supplementary-motor-area-and-the-cerebellum-to-the-anticipatory-postural-adjustments-and-execution-phases-of-human-gait-initiation
#16
Aliénor Richard, Angèle Van Hamme, Xavier Drevelle, Jean-Louis Golmard, Sabine Meunier, Marie-Laure Welter
Several brain structures including the brainstem, the cerebellum and the frontal cortico-basal ganglia network, with the primary and premotor areas have been shown to participate in the functional organization of gait initiation and postural control in humans, but their respective roles remain poorly understood. The aim of this study was to better understand the role of the supplementary motor area (SMA) and posterior cerebellum in the gait initiation process. Gait initiation parameters were recorded in 22 controls both before and after continuous theta burst transcranial stimulation (cTBS) of the SMA and cerebellum, and were compared to sham stimulation, using a randomized double-blind design study...
July 1, 2017: Neuroscience
https://www.readbyqxmd.com/read/28666335/a-randomized-double-blind-placebo-controlled-multicenter-study-of-a-ginger-extract-in-the-management-of-chemotherapy-induced-nausea-and-vomiting-cinv-in-patients-receiving-high-dose-cisplatin
#17
P Bossi, D Cortinovis, S Fatigoni, M Cossu Rocca, A Fabi, P Seminara, C Ripamonti, S Alfieri, R Granata, C Bergamini, F Agustoni, P Bidoli, F Nolè, M A Pessi, F Macchi, L Michellini, F Montanaro, F Roila
Background: The activity of ginger in the management of chemotherapy-induced nausea and vomiting (CINV) has been suggested, but design inadequacies, heterogeneity of the population, small numbers and poor quality of tested products limit the possibility to offer generalizable results. Patients and methods: We conducted a randomized, double-blind, placebo-controlled, multicenter study in patients planned to receive ≥2 chemotherapy cycles with high dose (>50 mg/m 2 ) cisplatin...
June 28, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28665765/the-association-between-comt-rs4680-and-5-httlpr-genotypes-and-concussion-history-in-south-african-rugby-union-players
#18
Sarah Mc Fie, Shameemah Abrahams, Jon Patricios, Jason Suter, Michael Posthumus, Alison V September
The objective was to investigate the relationship between Catechol-O-methyltransferase (COMT) rs4680 and serotonin-transporter-linked polymorphic region (5-HTTLPR) genotypes with concussion history and personality traits. Rugby players ("all levels": n = 303), from high schools ("junior", n = 137), senior amateur, and professional teams ("senior", n = 166), completed a self-reported concussion history questionnaire, Cloninger's Tridimensional Personality Questionnaire, and donated a DNA sample. Participants were allocated into control (non-concussed, n = 140), case (all) (previous suspected or diagnosed concussions, n = 163), or case (diagnosed only) (previous diagnosed concussion, n = 140) groups...
June 30, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28662461/standing-on-wedges-modifies-side-specific-postural-control-in-the-presence-of-lateral-external-perturbations
#19
Yun-Ju Lee, Jing-Nong Liang, Bing Chen, Mohan Ganesan, Alexander S Aruin
Standing on wedges changes the position in the ankle joints and affects postural stability in the medial-lateral direction. The objective of the study was to investigate the role of wedges and external lateral perturbations on anticipatory (APA) and compensatory postural adjustments (CPA). Ten healthy young participants were exposed to perturbations applied to the lateral part of their right shoulder when standing on a planar surface, on a medial or lateral wedges. Bilateral electromyographic activity of dorsal and ventral postural muscles and the center of pressure (COP) displacement were recorded and analyzed during the APA and CPA phases...
June 20, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28659850/increased-complexities-in-visual-search-behavior-in-skilled-players-for-a-self-paced-aiming-task
#20
Jingyi S Chia, Stephen F Burns, Laura A Barrett, Jia Y Chow
The badminton serve is an important shot for winning a rally in a match. It combines good technique with the ability to accurately integrate visual information from the shuttle, racket, opponent, and intended landing point. Despite its importance and repercussive nature, to date no study has looked at the visual search behaviors during badminton service in the singles discipline. Unlike anticipatory tasks (e.g., shot returns), the serve presents an opportunity to explore the role of visual search behaviors in movement control for self-paced tasks...
2017: Frontiers in Psychology
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