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https://www.readbyqxmd.com/read/28324136/the-inimitable-mouth-task-dependent-kinematic-differences-are-independent-of-terminal-precision
#1
Jason W Flindall, Claudia L R Gonzalez
Previous studies in our lab have described kinematic difference between grasp-to-eat and grasp-to-place movements, whereby participants produce smaller maximum grip apertures (MGAs) when grasping to bring the item to the mouth than when grasping to bring the item to a container near the mouth. This task difference is limited to right-handed movements, regardless of handedness; it has, therefore, been interpreted as evidence of left-hemisphere lateralization of the grasp-to-eat and other hand-to-mouth grasping movements...
March 21, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28303565/morphometry-and-microanatomy-of-the-barbels-of-the-common-sawshark-pristiophorus-cirratus-pristiophoridae-implications-for-pristiophorid-behaviour
#2
R J Nevatte, J E Williamson, N G F Vella, V Raoult, B E Wueringer
The internal anatomy of the barbels of the common sawshark Pristiophorus cirratus was examined with light microscopy to clarify their sensory role. No sensory structures such as taste buds (chemoreception), ampullae of Lorenzini (electroreception) or free neuromasts (lateral line mechanoreception) could be located in the barbels. The presence of bundles of nerve fibres, however, indicates a tactile function for the barbels. Conveyance of information regarding potentially damaging stimuli (nociception) and temperature (thermoception) cannot be excluded at this stage...
March 17, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28276424/-11-c-metomidate-pet-ct-scanning-can-identify-aldosterone-producing-adenomas-after-unsuccessful-lateralisation-with-ct-mri-and-adrenal-venous-sampling
#3
J Ouyang, R Hardy, M Brown, T Helliwell, M Gurnell, D J Cuthbertson
No abstract text is available yet for this article.
March 9, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28255758/atypical-processing-of-gaze-cues-and-faces-explains-comorbidity-between-autism-spectrum-disorder-asd-and-attention-deficit-hyperactivity-disorder-adhd
#4
Madeleine J Groom, Puja Kochhar, Antonia Hamilton, Elizabeth B Liddle, Marina Simeou, Chris Hollis
This study investigated the neurobiological basis of comorbidity between autism spectrum disorder (ASD) and attention deficit/hyperactivity disorder (ADHD). We compared children with ASD, ADHD or ADHD+ASD and typically developing controls (CTRL) on behavioural and electrophysiological correlates of gaze cue and face processing. We measured effects of ASD, ADHD and their interaction on the EDAN, an ERP marker of orienting visual attention towards a spatially cued location and the N170, a right-hemisphere lateralised ERP linked to face processing...
March 2, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28218375/retrieval-and-radiographic-analysis-of-the-contour-antiprotrusio-cage
#5
Jonathan M Vigdorchik, Richard S Yoon, Susannah L Gilbert, Joseph D Lipman, Mathias P Bostrom
INTRODUCTION: Acetabular reconstruction in the setting of severe bone loss or pelvic discontinuity remains a challenging problem. Multiple methods of treatment have been described including antiprotrusio cages (APCs). The objective of this study is to combine biomechanical analysis of retrieved APCs with radiographic and clinical data to determine which factors influence or predict APC failure. METHODS: 41 APCs were identified. Sequential radiographs were examined for cage and polyethylene cup abduction angles, change in centre of rotation, screw placement, progression of cage failure, and failure mechanism...
February 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28180072/the-diminishing-dominance-of-the-dominant-hemisphere-language-fmri-in-focal-epilepsy
#6
Chris Tailby, David F Abbott, Graeme D Jackson
"Which is the dominant hemisphere?" is a question that arises frequently in patients considered for neurosurgery. The concept of the dominant hemisphere implies uniformity of language lateralisation throughout the brain. It is increasingly recognised that this is not the case in the healthy control brain, and it is especially not so in neurological diseases such as epilepsy. In the present work we adapt our published objective lateralisation method (based on the construction of laterality curves) for use with sub-lobar cortical, subcortical and cerebellar regions of interest (ROIs)...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28160752/motor-preparation-rather-than-decision-making-differentiates-parkinson-s-disease-patients-with-and-without-freezing-of-gait
#7
John S Butler, Conor Fearon, Isabelle Killane, Saskia M Waechter, Richard B Reilly, Timothy Lynch
OBJECTIVE: Freezing of gait (FOG) is a brief, episodic phenomenon affecting over half of people with Parkinson's disease (PD) and leads to significant morbidity. The pathophysiology of FOG remains poorly understood but is associated with deficits in cognitive function and motor preparation. METHOD: We studied 20 people with PD (10 with FOG, 10 without FOG) and performed a timed response target detection task while electroencephalographic data were acquired. We analysed the data to detect and examine cortical markers of cognitive decision making (P3b or centroparietal positivity, CPP) and motor readiness potential...
December 28, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28131163/the-test-accuracy-of-the-montreal-cognitive-assessment-moca-by-stroke-lateralisation
#8
Edgar Chan, Samantha Altendorff, Colm Healy, David J Werring, Lisa Cipolotti
BACKGROUND: The Montreal Cognitive Assessment (MoCA) is an increasingly popular screening tool for detecting cognitive impairment post-stroke. However its' test accuracy by stroke lateralisation is as yet unknown. AIM: Our aim was to investigate whether the test accuracy of the MoCA differs by stroke lateralisation across different cognitive domains. METHODS: We retrospectively examined the cognitive profiles of 228 subacute stroke patients (86 Left, 142 Right), comparing MoCA-total and domain-specific scores with performance on detailed neuropsychological assessment...
February 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28126389/individual-differences-in-cognition-among-teleost-fishes
#9
REVIEW
Tyrone Lucon-Xiccato, Angelo Bisazza
Individual differences in cognitive abilities have been thoroughly investigated in humans and to a lesser extent in other mammals. Despite the growing interest in studying cognition in other taxonomic groups, data on individual differences are scarce for non-mammalian species. Here, we review the literature on individual differences in cognitive abilities in teleost fishes. Relatively few studies have directly addressed this topic and have provided evidence of consistent and heritable individual variation in cognitive abilities in fish...
January 23, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28122198/primary-motor-cortex-functionally-contributes-to-language-comprehension-an-online-rtms-study
#10
Nikola Vukovic, Matteo Feurra, Anna Shpektor, Andriy Myachykov, Yury Shtyrov
Among various questions pertinent to grounding human cognitive functions in a neurobiological substrate, the association between language and motor brain structures is a particularly debated one in neuroscience and psychology. While many studies support a broadly distributed model of language and semantics grounded, among other things, in the general modality-specific systems, theories disagree as to whether motor and sensory cortex activity observed during language processing is functional or epiphenomenal...
February 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28119021/reduced-relative-volume-in-motor-and-attention-regions-in-developmental-coordination-disorder-a-voxel-based-morphometry-study
#11
Jess E Reynolds, Melissa K Licari, Siobhan L Reid, Catherine Elliott, Anne M Winsor, Michael Bynevelt, Jac Billington
BACKGROUND AND OBJECTIVES: Developmental coordination disorder (DCD) is a prevalent childhood movement disorder, impacting the ability to perform movement skills at an age appropriate level. Although differences in grey matter (GM) volumes have been found in related developmental disorders, no such evidence has been linked with DCD to date. This cross-sectional study assessed structural brain differences in children with and without DCD. METHODS: High-resolution structural images were acquired from 44 children aged 7...
January 21, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28096471/resolving-the-brainstem-contributions-to-attentional-analgesia
#12
Jonathan C W Brooks, Wendy-Elizabeth Davies, Anthony E Pickering
Previous human imaging studies manipulating attention or expectancy have identified the periaqueductal gray (PAG) as a key brainstem structure implicated in endogenous analgesia. However, animal studies indicate that PAG analgesia is mediated largely via caudal brainstem structures, such as the rostral ventromedial medulla (RVM) and locus coeruleus (LC). To identify their involvement in endogenous analgesia, we used brainstem optimized, whole-brain imaging to record responses to concurrent thermal stimulation (left forearm) and visual attention tasks of titrated difficulty in 20 healthy subjects...
March 1, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28095928/one-hundred-years-of-external-approach-medialisation-thyroplasty
#13
V E Crolley, N Gibbins
It has been 100 years since Erwin Payr first developed an operation to improve the effects of a paralysed vocal fold, and operations based on this technique are still in use today. This technique, medialisation thyroplasty, aims to improve the symptoms caused by vocal fold palsy by realigning the lateralised vocal fold into the midline. Whilst the effects of vocal fold palsy were recognised in antiquity, it was only with the development of indirect laryngoscopy in the late nineteenth century that the vocal fold paralysis could be identified as an aetiology for poor phonation and dysphagia...
January 18, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28077669/preparatory-%C3%AE-band-oscillations-reflect-spatial-gating-independently-of-predictions-regarding-target-identity
#14
T Wildegger, F van Ede, M Woolrich, C R Gillebert, A C Nobre
Preparatory modulations of cortical α-band oscillations are a reliable index of the voluntary allocation of covert spatial attention. It is currently unclear whether attentional cues containing information about a target's identity (such as its visual orientation), in addition to its location, might additionally shape preparatory α modulations. Here, we explore this question by directly comparing spatial and feature-based attention in the same visual detection task while recording brain activity using magnetoencephalography (MEG)...
March 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28053258/ankle-joint-pressure-changes-in-high-tibial-and-distal-femoral-osteotomies-a-cadaver-study
#15
F Krause, A Barandun, G Klammer, I Zderic, B Gueorguiev, T Schmid
AIMS: To assess the effect of high tibial and distal femoral osteotomies (HTO and DFO) on the pressure characteristics of the ankle joint. MATERIALS AND METHODS: Varus and valgus malalignment of the knee was simulated in human cadaver full-length legs. Testing included four measurements: baseline malalignment, 5° and 10° re-aligning osteotomy, and control baseline malalignment. For HTO, testing was rerun with the subtalar joint fixed. In order to represent half body weight, a 300 N force was applied onto the femoral head...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28051771/proarrhythmic-remodelling-of-the-right-ventricle-in-a-porcine-model-of-repaired-tetralogy-of-fallot
#16
David Benoist, Virginie Dubes, François Roubertie, Stephen H Gilbert, Sabine Charron, Marion Constantin, Delphine Elbes, Delphine Vieillot, Bruno Quesson, Hubert Cochet, Michel Haïssaguerre, Caroline Rooryck, Pierre Bordachar, Jean-Benoit Thambo, Olivier Bernus
OBJECTIVE: The growing adult population with surgically corrected tetralogy of Fallot (TOF) is at risk of arrhythmias and sudden cardiac death. We sought to investigate the contribution of right ventricular (RV) structural and electrophysiological remodelling to arrhythmia generation in a preclinical animal model of repaired TOF (rTOF). METHODS AND RESULTS: Pigs mimicking rTOF underwent cardiac MRI functional characterisation and presented with pulmonary regurgitation, RV hypertrophy, dilatation and dysfunction compared with Sham-operated animals (Sham)...
October 8, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28043024/utility-of-a-questionnaire-tool-quaras-for-localizing-and-lateralizing-seizures-in-the-epilepsy-monitoring-unit-emu
#17
Rima M Chaudhari, Bhargavi Ramanujam, Renjith Appukuttan, Anubha Sharma, Yuvraj Kunwar, Gaurav Tejaniya, Ajay Garg, Madakasira Vasantha Padma, Madhavi Tripathi, Chandrashekhar Bal, Deepa Dash, Sarat P Chandra, Manjari Tripathi
OBJECTIVES: An accurate description of the seizure semiology improves the recognition of the ictal onset zone and helps in hypothesizing the possible epileptogenic zone (EZ). Semiology based on a reliable description of seizures may be as good as investigative modalities, as has been shown by numerous studies. The main objective of this study was to apply a questionnaire-tool for auras and semiology (QUARAS) in refractory epilepsy cohort and compare its yield to that of standard history-taking...
February 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27995828/single-dose-intratympanic-mesna-application-inhibits-propylene-glycol-induced-cholesteatoma-formation
#18
O Ismi, Y Y Karabulut, K K Bal, Y Vayisoglu, M Unal
OBJECTIVE: Mesna (i.e. sodium 2-mercaptoethanesulfonate; C2H5NaO3S2) has been used in otological surgery such as cholesteatoma dissection and tympanic membrane lateralisation in atelectatic ears. However, this study aimed to investigate its effect on cholesteatoma formation. METHODS: A total of 20 Wistar rats were divided into two groups of 10 animals. The right and left ears of control animals were treated with saline (saline control group; n = 10 ears) and propylene glycol plus saline (propylene glycol control group; n = 10 ears), respectively...
December 20, 2016: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27994220/structural-dysconnectivity-of-key-cognitive-and-emotional-hubs-in-young-people-at-high-genetic-risk-for-bipolar-disorder
#19
G Roberts, A Perry, A Lord, A Frankland, V Leung, E Holmes-Preston, F Levy, R K Lenroot, P B Mitchell, M Breakspear
Emerging evidence suggests that psychiatric disorders are associated with disturbances in structural brain networks. Little is known, however, about brain networks in those at high risk (HR) of bipolar disorder (BD), with such disturbances carrying substantial predictive and etiological value. Whole-brain tractography was performed on diffusion-weighted images acquired from 84 unaffected HR individuals with at least one first-degree relative with BD, 38 young patients with BD and 96 matched controls (CNs) with no family history of mental illness...
December 20, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27989779/tracking-thoughts-exploring-the-neural-architecture-of-mental-time-travel-during-mind-wandering
#20
Theodoros Karapanagiotidis, Boris C Bernhardt, Elizabeth Jefferies, Jonathan Smallwood
The capacity to imagine situations that have already happened or fictitious events that may take place in the future is known as mental time travel (MTT). Studies have shown that MTT is an important aspect of spontaneous thought, yet we lack a clear understanding of how the neurocognitive architecture of the brain constrains this element of human cognition. Previous functional magnetic resonance imaging (MRI) studies have shown that MTT involves the coordination between multiple regions that include mesiotemporal structures such as the hippocampus, as well as prefrontal and parietal regions commonly associated with the default mode network (DMN)...
February 15, 2017: NeuroImage
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