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https://www.readbyqxmd.com/read/28550499/systematic-review-of-fmri-compatible-devices-design-and-testing-criteria
#1
REVIEW
V Hartwig, N Carbonaro, A Tognetti, N Vanello
Functional Magnetic Resonance Imaging (fMRI) is at present one of the most used methodologies for functional brain exploration, both in clinical and research settings. fMRI can noninvasively measure neural activity by using specific experimental paradigms. Often, these paradigms require the stimulation of the subject to perform sensorimotor tasks: in the past, the stimuli have been administered manually for investigating fundamental aspects of tactile perception and somatosensory processing. Nowadays, the use of mechatronic devices to stimulate the subject during fMRI studies is growing, also to assure reproducibility, control, and monitoring of task performances...
May 26, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28549651/enriched-environment-alters-the-behavioral-profile-of-tenascin-c-deficient-mice
#2
V Stamenkovic, I Milenkovic, N Galjak, V Todorovic, P Andjus
Tenascin-C (TnC) is an extracellular matrix glycoprotein implicated in a variety of processes ranging from brain development to synaptic plasticity in the adult vertebrates. Although the role of the TnC gene in regulation of behavior has been investigated, it remained elusive how TnC deficiency interacts with the environment in shaping the behavioral phenotype. To address this, 3-week-old TnC+/+ and TnC-/- male mice were housed over an 8-week period in standard conditions (SC), or enriched environment (EE)...
May 23, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28549560/sensorimotor-adaptation-of-whole-body-postural-control
#3
Douglas M Shiller, Louis-Nicolas Veilleux, Mikaël Marois, Laurent Ballaz, Martin Lemay
The aim of the present study was to examine the modification of postural symmetry during quiet standing using a sensorimotor adaptation paradigm. A group of neurologically typical adult participants performed a visually-guided mediolateral (left-right) weight shifting task requiring precise adjustments in body orientation. During one phase of the task, the visual feedback of center of pressure (COP) was systematically biased toward the left or the right, requiring an adjustment in posture to compensate. COP during quiet standing without visual feedback was examined prior to and immediately following the sensorimotor adaptation procedure, in order to observe whether compensatory adjustments in postural control resulting from the visual-feedback manipulation would transfer to the control of whole-body COP during quiet standing...
May 23, 2017: Neuroscience
https://www.readbyqxmd.com/read/28549277/reliability-of-lower-limb-transcranial-magnetic-stimulation-outcomes-in-the-ipsi-and-contralesional-hemispheres-of-adults-with-chronic-stroke
#4
Louis-David Beaulieu, Hugo Massé-Alarie, Edith Ribot-Ciscar, Cyril Schneider
OBJECTIVE: To investigate the ability of transcranial magnetic stimulation (TMS) outcomes in the chronic stroke population to (i) track individual plastic changes and (ii) detect differences between individuals. To this end, intrarater "test-retest" reliability (relative and absolute) was tested for the ipsilesional and contralesional hemispheres. METHODS: Thirteen participants with a unilateral stroke (≥6months ago) and sensorimotor impairments were enrolled...
May 9, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28548304/delayed-onset-muscle-soreness-doms-does-not-influence-occlusal-sensitivity-and-position-sense-of-the-mandible
#5
Rosaria Bucci, Frank Lobbezoo, Ambrosina Michelotti, Christina Orfanou, Michail Koutris
BACKGROUND: Masticatory muscle-pain patients often complain about sensorimotor changes, but the effects of pain on the psychophysical properties remain unclear. This study aimed to investigate the effects of Delayed-Onset Muscle Soreness (DOMS) on the jaw's position sense (PS) and occlusal sensitivity (OS). METHODS: Twelve participants underwent intense concentric-eccentric jaw exercises. Self-reported muscle fatigue and pain, pain-free maximum mouth opening (MMO), pain pressure thresholds (PPTs) at right and left masseter and right and left anterior temporalis, maximum voluntary bite force (MVBF), PS, and OS were recorded before, immediately after, 24h, 48h, and one week after the exercises...
May 26, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28546109/background-activity-and-visual-responsiveness-of-caudate-nucleus-neurons-in-halothane-anaesthetised-and-in-awake-behaving-cats
#6
Balázs Barkóczi, Tamás Nagypál, Diána Nyujtó, Xénia Katona, Gabriella Eördegh, Balázs Bodosi, György Benedek, Gábor Braunitzer, Attila Nagy
This study focuses on the important question whether brain activity recorded from anaesthetised, paralyzed animals is comparable to that recorded from awake, behaving ones. We compared neuronal activity recorded from the caudate nucleus (CN) of two halothane-anaesthetised, paralyzed and two awake, behaving cats. In both models, extracellular recordings were made from the CN during static and dynamic visual stimulation. The anaesthesia was maintained during the recordings by a gaseous mixture of air and halothane (1...
May 22, 2017: Neuroscience
https://www.readbyqxmd.com/read/28544110/waardenburg-syndrome-a-rare-cause-of-inherited-neuropathy-due-to-sox10-mutation
#7
Petya Bogdanova-Mihaylova, Michael D Alexander, Raymond Pj Murphy, Sinéad M Murphy
Waardenburg syndrome (WS) is a rare disorder comprising sensorineural deafness and pigmentation abnormalities. Four distinct subtypes are defined based on the presence or absence of additional symptoms. Mutations in six genes have been described in WS. SOX10 mutations are usually associated with a more severe phenotype of WS with peripheral demyelinating neuropathy, central dysmyelinating leukodystrophy and Hirschsprung disease. Here we report a 32 year-old man with a novel heterozygous missense variant in SOX10 gene, who presented with congenital deafness, Hirschsprung disease, iris heterochromia, foot deformity and intermediate conduction velocity length-dependent sensorimotor neuropathy...
May 22, 2017: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/28542295/therapeutic-benefits-of-phosphodiesterase-4b-inhibition-after-traumatic-brain-injury
#8
Nicole M Wilson, Mark E Gurney, W Dalton Dietrich, Coleen M Atkins
Traumatic brain injury (TBI) initiates a deleterious inflammatory response that exacerbates pathology and worsens outcome. This inflammatory response is partially mediated by a reduction in cAMP and a concomitant upregulation of cAMP-hydrolyzing phosphodiesterases (PDEs) acutely after TBI. The PDE4B subfamily, specifically PDE4B2, has been found to regulate cAMP in inflammatory cells, such as neutrophils, macrophages and microglia. To determine if PDE4B regulates inflammation and subsequent pathology after TBI, adult male Sprague Dawley rats received sham surgery or moderate parasagittal fluid-percussion brain injury (2 ± 0...
2017: PloS One
https://www.readbyqxmd.com/read/28539951/disrupted-control-network-connectivity-in-abstinent-patients-with-alcohol-dependence
#9
Siekyeong Kim, Sungjin Im, Jeonghwan Lee, Sang-Gu Lee
OBJECTIVE: Alcohol causes damage to the brain and is associated with various functional impairments. However, much of the brain damage can be reversed by abstaining for enough time. This study aims to investigate the patterns and degrees of brain function in abstinent patients with alcohol dependence by using resting-state functional connectivity. METHODS: 26 male patients with alcohol dependence (alcohol group) and 28 age-matched male healthy volunteers (control group) were recruited from a mental hospital and the community, respectively...
May 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/28539879/multiple-neural-networks-malfunction-in-primary-blepharospasm-an-independent-components-analysis
#10
Xiao-Feng Huang, Meng-Ru Zhu, Ping Shan, Chen-Hui Pei, Zhan-Hua Liang, Hui-Ling Zhou, Ming-Fei Ni, Yan-Wei Miao, Guo-Qing Xu, Bing-Wei Zhang, Ya-Yin Luo
Primary blepharospasm (BPS) is a focal dystonia characterized by involuntary blinking and eyelid spasms. The pathophysiology of BPS remains unclear. Several neuroimaging studies have suggested dysfunction of sensory processing and sensorimotor integration, but the results have been inconsistent. This study aimed to determine whether patients with BPS exhibit altered functional brain connectivity and to explore possible correlations between these networks and clinical variables. Twenty-five patients with BPS and 25 healthy controls were enrolled...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28539873/pharmacological-stimulation-of-phagocytosis-enhances-amyloid-plaque-clearance-evidence-from-a-transgenic-mouse-model-of-attr-neuropathy
#11
Eleni Fella, Kleitos Sokratous, Revekka Papacharalambous, Kyriacos Kyriacou, Joy Phillips, Sam Sanderson, Elena Panayiotou, Theodoros Kyriakides
Hereditary ATTR V30M amyloidosis is a lethal autosomal dominant sensorimotor and autonomic neuropathy caused by deposition of aberrant transthyretin (TTR). Immunohistochemical examination of sural nerve biopsies in patients with amyloidotic neuropathy show co-aggregation of TTR with several proteins; including apolipoprotein E, serum amyloid P and components of the complement cascade. Complement activation and macrophages are increasingly recognized to play a crucial role in amyloidogenesis at the tissue bed level...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28539669/sensorimotor-adaptation-as-a-behavioural-biomarker-of-early-spinocerebellar-ataxia-type-6
#12
Muriel T N Panouillères, Raed A Joundi, Sonia Benitez-Riveiro, Binith Cheeran, Christopher R Butler, Andrea H Németh, R Chris Miall, Ned Jenkinson
Early detection of the behavioural deficits of neurodegenerative diseases may help to describe the pathogenesis of such diseases and establish important biomarkers of disease progression. The aim of this study was to identify how sensorimotor adaptation of the upper limb, a cerebellar-dependent process restoring movement accuracy after introduction of a perturbation, is affected at the pre-clinical and clinical stages of spinocerebellar ataxia type 6 (SCA6), an inherited neurodegenerative disease. We demonstrate that initial adaptation to the perturbation was significantly impaired in the eighteen individuals with clinical motor symptoms but mostly preserved in the five pre-clinical individuals...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28539421/sound-making-actions-lead-to-immediate-plastic-changes-of-neuromagnetic-evoked-responses-and-induced-beta-band-oscillations-during-perception
#13
Bernhard Ross, Masihullah Barat, Takako Fujioka
Auditory and sensorimotor brain areas interact during the action-perception cycle of sound making. Neurophysiological evidence of a feedforward model of the action and its outcome has been associated with attenuation of the N1 wave of auditory evoked responses elicited by self-generated sounds, such as vocalization or playing a musical instrument. Moreover, neural oscillations at beta-band frequencies have been related to predicting the sound outcome after action initiation. We hypothesized that a newly learned action-perception association would immediately modify interpretation of the sound during subsequent listening...
May 24, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28537007/from-anticipation-to-integration-the-role-of-integrated-action-effects-in-building-sensorimotor-contingencies
#14
Thomas Camus, Bernhard Hommel, Lionel Brunel, Thibaut Brouillet
Ideomotor approaches to action control have provided evidence that the activation of an anticipatory image of previously learned action-effects plays a decisive role in action selection. This study sought for converging evidence by combining three previous experimental paradigms: the response-effect compatibility protocol introduced by Kunde (Journal of Experimental Psychology: Human Perception and Performance, 27(2), 387-394, 2001), the acquisition-test paradigm developed by Elsner and Hommel (Journal of Experimental Psychology: Human Perception and Performance, 27(1), 229, 2001), and the object-action compatibility manipulation of Tucker and Ellis (Visual Cognition, 8(6), 769-800, 2001)...
May 23, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28536517/differential-recruitment-of-parietal-cortex-during-spatial-and-non-spatial-reach-planning
#15
Pierre-Michel Bernier, Kevin Whittingstall, Scott T Grafton
The planning of goal-directed arm reaching movements is associated with activity in the dorsal parieto-frontal cortex, within which multiple regions subserve the integration of arm- and target-related sensory signals to encode a motor goal. Surprisingly, many of these regions show sustained activity during reach preparation even when target location is not specified, i.e., when a motor goal cannot be unambiguously formed. The functional role of these non-spatial preparatory signals remains unresolved. Here this process was investigated in humans by comparing reach preparatory activity in the presence or absence of information regarding upcoming target location...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28536510/influence-of-pre-reproductive-maternal-enrichment-on-coping-response-to-stress-and-expression-of-c-fos-and-glucocorticoid-receptors-in-adolescent-offspring
#16
Debora Cutuli, Erica Berretta, Greta Pasqualini, Paola De Bartolo, Paola Caporali, Daniela Laricchiuta, Patricia Sampedro-Piquero, Francesca Gelfo, Matteo Pesoli, Francesca Foti, Azucena Begega, Laura Petrosini
Environmental enrichment (EE) is an experimental setting broadly used for investigating the effects of complex social, cognitive, and sensorimotor stimulations on brain structure and function. Recent studies point out that parental EE experience, even occurring in the pre-reproductive phase, affects neural development and behavioral trajectories of the offspring. In the present study we investigated the influences of pre-reproductive EE of female rats on maternal behavior and adolescent male offspring's coping response to an inescapable stressful situation after chronic social isolation...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28535618/granulomatosis-with-polyangiitis-in-tunisia
#17
I Ben Ghorbel, N Belfeki, N Baouendi, T Ben Salem, M H Houman
Granulomatosis with polyangiitis (GPA) is more frequent in Northern rather than Southern countries. Very few studies have been conducted in Africa. We have performed a retrospective descriptive study including clinical and laboratory profiles of 30 Tunisian GPA patients seen at the department of Internal Medicine of the University Hospital of la Rabta from 2000 to 2014. Mean age at initial GPA diagnosis was 46±12 years, and the average number of months between the onset of symptoms and diagnosis was 25. Seventeen (56%) were male, and 13 (44%) were female...
May 22, 2017: Reumatismo
https://www.readbyqxmd.com/read/28535201/regulatory-t-cells-ameliorate-tissue-plasminogen-activator-induced-brain-haemorrhage-after-stroke
#18
Leilei Mao, Peiying Li, Wen Zhu, Wei Cai, Zongjian Liu, Yanling Wang, Wenli Luo, Ruth A Stetler, Rehana K Leak, Weifeng Yu, Yanqin Gao, Jun Chen, Gang Chen, Xiaoming Hu
Delayed thrombolytic treatment with recombinant tissue plasminogen activator (tPA) may exacerbate blood-brain barrier breakdown after ischaemic stroke and lead to lethal haemorrhagic transformation. The immune system is a dynamic modulator of stroke response, and excessive immune cell accumulation in the cerebral vasculature is associated with compromised integrity of the blood-brain barrier. We previously reported that regulatory T cells, which function to suppress excessive immune responses, ameliorated blood-brain barrier damage after cerebral ischaemia...
May 22, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28534044/hsp-and-deafness-neurocristopathy-caused-by-a-novel-mosaic-sox10-mutation
#19
Sandra Donkervoort, Diana Bharucha-Goebel, Pomi Yun, Ying Hu, Payam Mohassel, Ahmet Hoke, Wadih M Zein, Daniel Ezzo, Andrea M Atherton, Ann C Modrcin, Majed Dasouki, A Reghan Foley, Carsten G Bönnemann
OBJECTIVE: To identify the underlying genetic cause in 2 sisters affected with progressive lower extremity spasticity, neuropathy, and early-onset deafness. METHODS: Whole-exome sequencing was performed, and segregation testing of variants was investigated using targeted Sanger sequencing. An inherited paternal mosaic mutation was further evaluated through quantitative analysis of the ratio of mutant vs wild-type allele in genomic DNA from various tissues, including blood, dermal fibroblasts, and saliva...
June 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28531806/standard-body-space-relationships-fingers-hold-spatial-information
#20
Daniele Romano, Francesco Marini, Angelo Maravita
The representation of the body in the brain is constantly updated to allow optimal sensorimotor interactions with the external world. In addition to dynamic features, body representation holds stable features that are still largely unknown. In the present work we explored the hypothesis that body parts have preferential associations with relative spatial locations. Specifically, in three experiments, we found consistent preferential associations between the index finger and the top position, and between the thumb and the bottom position...
May 19, 2017: Cognition
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