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https://www.readbyqxmd.com/read/29792887/auditory-priming-improves-neural-synchronization-in-auditory-motor-entrainment
#1
Jewel E Crasta, Michael H Thaut, Charles W Anderson, Patricia L Davies, William J Gavin
Neurophysiological research has shown that auditory and motor systems interact during movement to rhythmic auditory stimuli through a process called entrainment. This study explores the neural oscillations underlying auditory-motor entrainment using electroencephalography. Forty young adults were randomly assigned to one of two control conditions, an auditory-only condition or a motor-only condition, prior to a rhythmic auditory-motor synchronization condition (referred to as combined condition). Participants assigned to the auditory-only condition (auditory-first group) listened to 400 trials of auditory stimuli presented every 800ms, while those in the motor-only condition (motor-first group) were asked to tap rhythmically every 800ms without any external stimuli...
May 21, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29789575/tamoxifen-induced-knockdown-of-the-mitochondrial-calcium-uniporter-in-thy1-expressing-neurons-protects-mice-from-hypoxic-ischemic-brain-injury
#2
Matthew Nichols, Evgeny V Pavlov, George S Robertson
The mitochondrial calcium uniporter (MCU) mediates high-capacity mitochondrial calcium uptake that stimulates energy production. However, excessive MCU activity can cause ischemic heart injury. To examine if the MCU is also involved in hypoxic/ischemic (HI) brain injury, we have generated conditional MCU knockout mice by tamoxifen (TMX) administration to adult MCU-floxed (MCUfl/fl ) mice expressing a construct encoding Thy1-cre/ERT2-eYFP. Relative to TMX/Thy1-cre/ERT2-eYFP controls, HI-induced sensorimotor deficits, forebrain neuron loss and mitochondrial damage were decreased for conditional MCU knockout mice...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29789012/novel-tnf-receptor-1-inhibitors-identified-as-potential-therapeutic-candidates-for-traumatic-brain-injury
#3
Rachel K Rowe, Jordan L Harrison, Hongtao Zhang, Adam D Bachstetter, David P Hesson, Bruce F O'Hara, Mark I Greene, Jonathan Lifshitz
BACKGROUND: Traumatic brain injury (TBI) begins with the application of mechanical force to the head or brain, which initiates systemic and cellular processes that are hallmarks of the disease. The pathological cascade of secondary injury processes, including inflammation, can exacerbate brain injury-induced morbidities and thus represents a plausible target for pharmaceutical therapies. We have pioneered research on post-traumatic sleep, identifying that injury-induced sleep lasting for 6 h in brain-injured mice coincides with increased cortical levels of inflammatory cytokines, including tumor necrosis factor (TNF)...
May 22, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29787347/stp-position-paper-recommended-best-practices-for-sampling-processing-and-analysis-of-the-peripheral-nervous-system-nerves-and-somatic-and-autonomic-ganglia-during-nonclinical-toxicity-studies
#4
Brad Bolon, Georg Krinke, Mark T Butt, Deepa B Rao, Ingrid D Pardo, Bernard S Jortner, Robert H Garman, Karl Jensen, Lydia Andrews-Jones, James P Morrison, Alok K Sharma, Michael S Thibodeau
Peripheral nervous system (PNS) toxicity is surveyed inconsistently in nonclinical general toxicity studies. These Society of Toxicologic Pathology "best practice" recommendations are designed to ensure consistent, efficient, and effective sampling, processing, and evaluation of PNS tissues for four different situations encountered during nonclinical general toxicity (screening) and dedicated neurotoxicity studies. For toxicity studies where neurotoxicity is unknown or not anticipated (situation 1), PNS evaluation may be limited to one sensorimotor spinal nerve...
January 1, 2018: Toxicologic Pathology
https://www.readbyqxmd.com/read/29783206/-experimental-evaluation-of-the-therapeutic-potential-of-liposome-mediated-apoe3-gene-transfection-for-cerebral-atherosclerosis
#5
Vadym V Biloshytskyi, Alisa V Pachevska, Alina V Biloshytska, Valerii M Istoshyn, Maryna V Biloshytska, Olha B Shevnia
OBJECTIVE: Introduction: In recent years, a stroke has been the cause of high lethality, long-term and sustained disability, the problem of which is still far from being resolved. The root cause of stroke is atherosclerosis. The aim: Study of neurotrophic and neuroprotective functions of apoE in rat brain tissue in experimental atherosclerosis. PATIENTS AND METHODS: Materials and methods: The study included 60 sexually mature rats. The model of experimental atherosclerosis was created by Anichkov method...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29782942/effects-of-light-and-dark-phase-testing-on-the-investigation-of-behavioural-paradigms-in-mice-relevance-for-behavioural-neuroscience
#6
Juliet Richetto, Marcello Polesel, Ulrike Weber-Stadlbauer
Different timing and light phases are critical factors in behavioural neuroscience, which can greatly affect the experimental outcomes of the performed tests. Despite the fact that time of testing is one of the most common factors that varies across behavioural laboratories, knowledge about the consequences of testing time on behavioural readouts is limited. Thus, in this study we systematically assessed the effect of this factor on the readout of a variety of elementary and recurrent behavioural paradigms in C57Bl/6 mice...
May 18, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29782041/meta-analysis-of-brain-mechanisms-of-chewing-and-clenching-movements
#7
Chia-Shu Lin
BACKGROUND: Functional magnetic resonance imaging (fMRI) is widely used for investigating brain activation patterns associated with chewing and clenching movements. Whether studies consistently identify similar brain loci engaged in these movements remains unknown. OBJECTIVE: We investigated the consistency with which specific brain loci were reported to be activated during teeth-occluding movements, using the activation likelihood estimation (ALE) meta-analysis...
May 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29780410/quantification-of-upper-limb-motor-recovery-and-eeg-power-changes-after-robot-assisted-bilateral-arm-training-in-chronic-stroke-patients-a-prospective-pilot-study
#8
Marialuisa Gandolfi, Emanuela Formaggio, Christian Geroin, Silvia Francesca Storti, Ilaria Boscolo Galazzo, Marta Bortolami, Leopold Saltuari, Alessandro Picelli, Andreas Waldner, Paolo Manganotti, Nicola Smania
Background: Bilateral arm training (BAT) has shown promise in expediting progress toward upper limb recovery in chronic stroke patients, but its neural correlates are poorly understood. Objective: To evaluate changes in upper limb function and EEG power after a robot-assisted BAT in chronic stroke patients. Methods: In a within-subject design, seven right-handed chronic stroke patients with upper limb paresis received 21 sessions (3 days/week) of the robot-assisted BAT...
2018: Neural Plasticity
https://www.readbyqxmd.com/read/29780307/parvalbumin-and-gaba-microcircuits-in-the-mouse-superior-colliculus
#9
Claudio A Villalobos, Qiong Wu, Psyche H Lee, Paul J May, Michele A Basso
The mammalian superior colliculus (SC) is a sensorimotor midbrain structure responsible for orienting behaviors. Although many SC features are known, details of its intrinsic microcircuits are lacking. We used transgenic mice expressing reporter genes in parvalbumin-positive (PV+ ) and gamma aminobutyric acid-positive (GABA+ ) neurons to test the hypothesis that PV+ neurons co-localize GABA and form inhibitory circuits within the SC. We found more PV+ neurons in the superficial compared to the intermediate SC, although a larger percentage of PV+ neurons co-expressed GABA in the latter...
2018: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/29779940/encoding-of-articulatory-kinematic-trajectories-in-human-speech-sensorimotor-cortex
#10
Josh Chartier, Gopala K Anumanchipalli, Keith Johnson, Edward F Chang
When speaking, we dynamically coordinate movements of our jaw, tongue, lips, and larynx. To investigate the neural mechanisms underlying articulation, we used direct cortical recordings from human sensorimotor cortex while participants spoke natural sentences that included sounds spanning the entire English phonetic inventory. We used deep neural networks to infer speakers' articulator movements from produced speech acoustics. Individual electrodes encoded a diversity of articulatory kinematic trajectories (AKTs), each revealing coordinated articulator movements toward specific vocal tract shapes...
May 8, 2018: Neuron
https://www.readbyqxmd.com/read/29779829/leveling-the-playing-field-evaluation-of-a-portable-instrument-for-quantifying-balance-performance
#11
Sutton B Richmond, Kevin D Dames, Daniel J Goble, Brett W Fling
Balance is a complex, sensorimotor task requiring an individual to maintain the center of gravity within the base of support. Quantifying balance in a reliable and valid manner is essential to evaluating disease progression, aging complications, and injuries in clinical and research settings. Typically, researchers use force plates to track motion of the center of gravity during a variety of tasks. However, limiting factors such as cost, portability, and availability have hindered postural stability evaluation in these settings...
May 17, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29779740/the-influence-of-sensorimotor-experience-on-the-aesthetic-evaluation-of-dance-across-the-life-span
#12
Louise P Kirsch, Emily S Cross
Understanding how action perception, embodiment, and emotion interact is essential for advancing knowledge about how we perceive and interact with each other in a social world. One tool that has proved particularly useful in the past decade for exploring the relationship between perception, action, and affect is dance. Dance is, in its essence, a rich and multisensory art form that can be used to help answer not only basic questions about social cognition but also questions concerning how aging shapes the relationship between action perception, and the role played by affect, emotion, and aesthetics in social perception...
2018: Progress in Brain Research
https://www.readbyqxmd.com/read/29779737/neurodevelopmental-perspectives-on-dance-learning-insights-from-early-adolescence-and-young-adulthood
#13
Dilini K Sumanapala, Jon Walbrin, Louise P Kirsch, Emily S Cross
Studies investigating human motor learning and movement perception have shown that similar sensorimotor brain regions are engaged when we observe or perform action sequences. However, the way these networks enable translation of complex observed actions into motor commands-such as in the context of dance-remains poorly understood. Emerging evidence suggests that the ability to encode specific visuospatial and kinematic movement properties encountered via different routes of sensorimotor experience may be an integral component of action learning throughout development...
2018: Progress in Brain Research
https://www.readbyqxmd.com/read/29779156/adolescent-isolation-rearing-produces-a-prepulse-inhibition-deficit-correlated-with-expression-of-the-nmda-glun1-subunit-in-the-nucleus-accumbens
#14
Megan L Fitzgerald, Virginia M Pickel
Adolescence is a transition period during which social interaction is necessary for normal brain and behavior development. Severely abnormal social interactions during adolescence can increase the incidence of lifelong psychiatric disease. Decreased prepulse inhibition (PPI) is a quantifiable hallmark of some psychiatric illnesses in humans and can be elicited in rodents by isolation rearing throughout the adolescent transition period. PPI is a measure of sensorimotor gating in which the nucleus accumbens (Acb) is crucially involved...
May 19, 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/29778763/oscillation-patterns-of-local-field-potentials-in-the-dorsal-striatum-and-sensorimotor-cortex-during-the-encoding-maintenance-and-decision-stages-for-the-ordinal-comparison-of-sub-and-supra-second-signal-durations
#15
REVIEW
Bon-Mi Gu, Keshav Kukreja, Warren H Meck
Ordinal comparison of successively presented signal durations requires a) the encoding of the first signal duration (standard), b) maintenance of temporal information specific to the standard duration in memory, and c) timing of the second signal duration (comparison) during which a comparison is made of the first and second durations. Rats were first trained to make ordinal comparisons of signal durations within three time ranges using 0.5, 1.0, and 3.0-s standard durations. Local field potentials were then recorded from the dorsal striatum and sensorimotor cortex in order to investigate the pattern of neural oscillations during each phase of the ordinal-comparison process...
May 17, 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29777824/brain-network-segregation-and-integration-during-an-epoch-related-working-memory-fmri-experiment
#16
Peter Fransson, Björn C Schiffler, William Hedley Thompson
The characterization of brain subnetwork segregation and integration has previously focused on changes that are detectable at the level of entire sessions or epochs of imaging data. In this study, we applied time-varying functional connectivity analysis together with temporal network theory to calculate point-by-point estimates in subnetwork segregation and integration during an epoch-based (2-back, 0-back, baseline) working memory fMRI experiment as well as during resting-state. This approach allowed us to follow task-related changes in subnetwork segregation and integration at a high temporal resolution...
May 16, 2018: NeuroImage
https://www.readbyqxmd.com/read/29777776/distinct-roles-for-the-cell-adhesion-molecule-contactin2-in-the-development-and-function-of-neural-circuits-in-zebrafish
#17
Suman Gurung, Emilia Asante, Devynn Hummel, Ashley Williams, Oren Feldman-Schultz, Mary C Halloran, Vinoth Sittaramane, Anand Chandrasekhar
Contactin2 (Cntn2)/Transient Axonal Glycoprotein 1 (Tag1), a neural cell adhesion molecule, has established roles in neuronal migration and axon fasciculation in chick and mouse. In zebrafish, antisense morpholino-based studies have indicated roles for cntn2 in the migration of facial branchiomotor (FBM) neurons, the guidance of the axons of the nucleus of the medial longitudinal fascicle (nucMLF), and the outgrowth of Rohon-Beard (RB) central axons. To study functions of Cntn2 in later stages of neuronal development, we generated cntn2 mutant zebrafish using CRISPR-Cas9...
May 16, 2018: Mechanisms of Development
https://www.readbyqxmd.com/read/29775985/sensorimotor-exercises-and-enhanced-trunk-function-a-randomized-controlled-trial
#18
Steffen Mueller, Tilman Engel, Juliane Mueller, Josefine Stoll, Heiner Baur, Frank Mayer
The aim of this study was to investigate the effect of a 6-week sensorimotor or resistance training on maximum trunk strength and response to sudden, high-intensity loading in athletes.Forty-three healthy, well-trained participants were randomized into sensorimotor (SMT; n=11), resistance training (RT; n=16) and control groups (CG; n=16). Treatment groups received either sensorimotor training (SMT) or resistance training (RT) for 6 weeks, 3 times a week. At baseline and after 6 weeks of intervention, participants' maximum isokinetic strength in trunk rotation and extension was tested (concentric/eccentric 30°/s)...
May 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29775909/sensorimotor-control-and-neuromuscular-activity-of-the-shoulder-in-adolescent-competitive-swimmers-with-generalized-joint-hypermobility
#19
Thomas Frydendal, Henrik Eshøj, Behnam Liaghat, Pascal Edouard, Karen Søgaard, Birgit Juul-Kristensen
INTRODUCTION: Shoulder pain is highly prevalent in competitive swimmers, and generalized joint hypermobility (GJH) is considered a risk factor. Sensorimotor control deficiencies and altered neuromuscular activation of the shoulder may represent underlying factors. RESEARCH QUESTION: To investigate whether competitive swimmers with GJH including shoulder hypermobility (GJHS) differ in shoulder sensorimotor control and muscle activity from those without GJH and no shoulder hypermobility (NGJH)...
May 5, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29775838/deconstructing-skill-learning-and-its-physiological-mechanisms
#20
Danny Spampinato, Pablo Celnik
Acquiring complex motor skills involves learning a number of distinct motor components. Two fundamental elements that constitute a skill are the internal representation (i.e., the calibration of a sensorimotor map) and the sequence of movements needed to execute the task. Learning each of these likely rely on different neural substrates such as the cerebellum and primary motor cortex (M1), and physiological mechanisms. However, the specific neurophysiological processes underlying the acquisition of these components remains poorly understood...
March 27, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
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