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Sensory Processing Disorder

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https://www.readbyqxmd.com/read/28223982/mouse-model-of-neurological-complications-resulting-from-encephalitic-alphavirus-infection
#1
Shannon E Ronca, Jeanon Smith, Takaaki Koma, Magda M Miller, Nadezhda Yun, Kelly T Dineley, Slobodan Paessler
Long-term neurological complications, termed sequelae, can result from viral encephalitis, which are not well understood. In human survivors, alphavirus encephalitis can cause severe neurobehavioral changes, in the most extreme cases, a schizophrenic-like syndrome. In the present study, we aimed to adapt an animal model of alphavirus infection survival to study the development of these long-term neurological complications. Upon low-dose infection of wild-type C57B/6 mice, asymptomatic and symptomatic groups were established and compared to mock-infected mice to measure general health and baseline neurological function, including the acoustic startle response and prepulse inhibition paradigm...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28223033/children-with-asd-show-links-between-aberrant-sound-processing-social-symptoms-and-atypical-auditory-interhemispheric-and-thalamocortical-functional-connectivity
#2
Annika C Linke, R Joanne Jao Keehn, Ellyn B Pueschel, Inna Fishman, Ralph-Axel Müller
Autism spectrum disorder (ASD) is a complex and prevalent neurodevelopmental disorder characterized by social and communicative deficits, as well as repetitive behaviors and atypical sensitivity to sensory stimulation. Alterations in network connectivity are widely recognized, but their interplay with social and sensory symptoms remains largely unclear. Here, functional magnetic resonance imaging and diagnostic and behavioral assessments were used in a cohort of children and adolescents with ASD (n=40) and matched typically developing (TD, n=38) controls to examine the relation between auditory processing, interhemispheric and thalamocortical network connectivity, and social-behavioral symptom severity...
January 16, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28215248/quantitative-sensory-test-for-primary-restless-legs-syndrome-willis-ekbom-disease-using-the-current-perception%C3%A2-threshold-test
#3
Yong Won Cho, Min-Sung Kang, Keun Tae Kim, So Young Do, Jung-Geun Lim, So Young Lee, Gholam K Motamedi
BACKGROUND: Restless legs syndrome/Willis-Ekbom disease (RLS/WED) is a sensorimotor neurological disorder, and it is especially aggravated at night. The purpose of this study was to investigate the diurnal sensory dysfunction in primary RLS/WED using the current perception threshold (CPT) test, compared to healthy controls. METHODS: Thirty primary RLS/WED subjects and 30 healthy controls were enrolled. The severity of RLS/WED and sleep problems were evaluated in all subjects...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28213292/improving-therapeutic-outcomes-in-autism-spectrum-disorders-enhancing-social-communication-and-sensory-processing-through-the-use-of-interactive-robots
#4
REVIEW
Felippe Sartorato, Leon Przybylowski, Diana K Sarko
For children with autism spectrum disorders (ASDs), social robots are increasingly utilized as therapeutic tools in order to enhance social skills and communication. Robots have been shown to generate a number of social and behavioral benefits in children with ASD including heightened engagement, increased attention, and decreased social anxiety. Although social robots appear to be effective social reinforcement tools in assistive therapies, the perceptual mechanism underlying these benefits remains unknown...
February 7, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28196478/genetic-analysis-of-impaired-trimethylamine-metabolism-using-whole-exome-sequencing
#5
Yiran Guo, Liang-Dar Hwang, Jiankang Li, Jason Eades, Chung Wen Yu, Corrine Mansfield, Alexis Burdick-Will, Xiao Chang, Yulan Chen, Fujiko F Duke, Jianguo Zhang, Steven Fakharzadeh, Paul Fennessey, Brendan J Keating, Hui Jiang, Hakon Hakonarson, Danielle R Reed, George Preti
BACKGROUND: Trimethylaminuria (TMAU) is a genetic disorder whereby people cannot convert trimethylamine (TMA) to its oxidized form (TMAO), a process that requires the liver enzyme FMO3. Loss-of-function variants in the FMO3 gene are a known cause of TMAU. In addition to the inability to metabolize TMA precursors like choline, patients often emit a characteristic odor because while TMAO is odorless, TMA has a fishy smell. The Monell Chemical Senses Center is a research institute with a program to evaluate people with odor complaints for TMAU...
February 15, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28188216/amygdalar-gating-of-early-sensory-processing-through-interactions-with-locus-coeruleus
#6
Cynthia D Fast, John P McGann
Fear- and stress-induced activity in the amygdala has been hypothesized to influence sensory brain regions through the amygdala's influence on neuromodulatory centers. To directly examine this relationship, we used optical imaging to observe odor-evoked activity in populations of olfactory bulb inhibitory interneurons and of synaptic terminals of olfactory sensory neurons (the olfactory system's primary sensory neurons, which provide the initial olfactory input to the brain) during pharmacological inactivation of amygdala and locus coeruleus (LC) in mice...
February 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28186656/phenotype-and-genotype-specific-structural-alterations-in-spasmodic-dysphonia
#7
Serena Bianchi, Giovanni Battistella, Hailey Huddleston, Rebecca Scharf, Lazar Fleysher, Anna F Rumbach, Steven J Frucht, Andrew Blitzer, Laurie J Ozelius, Kristina Simonyan
BACKGROUND: Spasmodic dysphonia is a focal dystonia characterized by involuntary spasms in the laryngeal muscles that occur selectively during speaking. Although hereditary trends have been reported in up to 16% of patients, the causative etiology of spasmodic dysphonia is unclear, and the influences of various phenotypes and genotypes on disorder pathophysiology are poorly understood. In this study, we examined structural alterations in cortical gray matter and white matter integrity in relationship to different phenotypes and putative genotypes of spasmodic dysphonia to elucidate the structural component of its complex pathophysiology...
February 10, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28180024/ciliopathies-genetics-in-pediatric-medicine
#8
REVIEW
Machteld M Oud, Ideke J C Lamers, Heleen H Arts
Ciliary disorders, which are also referred to as ciliopathies, are a group of hereditary disorders that result from dysfunctional cilia. The latter are cellular organelles that stick up from the apical plasma membrane. Cilia have important roles in signal transduction and facilitate communications between cells and their surroundings. Ciliary disruption can result in a wide variety of clinically and genetically heterogeneous disorders with overlapping phenotypes. Because cilia occur widespread in our bodies many organs and sensory systems can be affected when they are dysfunctional...
March 2017: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/28179394/pathophysiology-of-migraine-a-disorder-of-sensory-processing
#9
REVIEW
Peter J Goadsby, Philip R Holland, Margarida Martins-Oliveira, Jan Hoffmann, Christoph Schankin, Simon Akerman
Plaguing humans for more than two millennia, manifest on every continent studied, and with more than one billion patients having an attack in any year, migraine stands as the sixth most common cause of disability on the planet. The pathophysiology of migraine has emerged from a historical consideration of the "humors" through mid-20th century distraction of the now defunct Vascular Theory to a clear place as a neurological disorder. It could be said there are three questions: why, how, and when? Why: migraine is largely accepted to be an inherited tendency for the brain to lose control of its inputs...
April 2017: Physiological Reviews
https://www.readbyqxmd.com/read/28174609/disrupted-development-and-imbalanced-function-in-the-global-neuronal-workspace-a-positive-feedback-mechanism-for-the-emergence-of-asd-in-early-infancy
#10
REVIEW
Chris Fields, James F Glazebrook
Autism spectrum disorder (ASD) is increasingly being conceptualized as a spectrum disorder of connectome development. We review evidence suggesting that ASD is characterized by a positive feedback loop that amplifies small functional variations in early-developing sensory-processing pathways into structural and functional imbalances in the global neuronal workspace. Using vision as an example, we discuss how early functional variants in visual processing may be feedback-amplified to produce variant object categories and disrupted top-down expectations, atypically large expectation-to-perception mismatches, problems re-identifying individual people and objects, socially inappropriate, generally aversive emotional responses and disrupted sensory-motor coordination...
February 2017: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/28174528/anxious-individuals-are-impulsive-decision-makers-in-the-delay-discounting-task-an-erp-study
#11
Lisheng Xia, Ruolei Gu, Dandan Zhang, Yuejia Luo
Impulsivity, which is linked to a wide range of psychiatric disorders, is often characterized by a preference for immediate but smaller rewards over delayed but larger rewards. However, debate exists on the relationship between anxiety and impulsivity. Here we use event-related potential (ERP) components as biomarkers in the temporal discounting task to examine the effect of anxiety on inter-temporal decision-making. Our behavioral results indicated that the high trait anxiety (HTA) group made significantly more immediate choices than the low trait anxiety (LTA) group...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28174239/ataxin-2-binding-protein-1-is-a-context-specific-positive-regulator-of-notch-signaling-during-neurogenesis-in-drosophila-melanogaster
#12
Jay Prakash Shukla, Girish Deshpande, L S Shashidhara
The role of Notch pathway during lateral inhibition underlying binary cell fate choice is extensively studied, although context-specificity that generates diverse outcomes is relatively less well understood. In the peripheral nervous system of Drosophila melanogaster, differential Notch signaling between cells of proneural cluster orchestrates sensory organ specification. Here we report functional analysis of Drosophila Ataxin2 binding protein1 (dA2BP1) during this process. It's human orthologue A2BP1 is linked to type 2 Spinocerebellar ataxia and other complex neuronal disorders...
February 7, 2017: Development
https://www.readbyqxmd.com/read/28168888/cutaneous-sensibility-changes-in-bell-s-palsy-patients
#13
Carlos Andrés Cárdenas Palacio, Francisco Alejandro Múnera Galarza
Objective Bell's palsy is a cranial nerve VII dysfunction that renders the patient unable to control facial muscles from the affected side. Nevertheless, some patients have reported cutaneous changes in the paretic area. Therefore, cutaneous sensibility changes might be possible additional symptoms within the clinical presentation of this disorder. Accordingly, the aim of this research was to investigate the relationship between cutaneous sensibility and facial paralysis severity in these patients. Study Design Prospective longitudinal cohort study...
February 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28153123/temporomandibular-disorders-and-painful-comorbidities-clinical-association-and-underlying-mechanisms
#14
Yuri Martins Costa, Paulo César Rodrigues Conti, Flavio Augusto Cardoso de Faria, Leonardo Rigoldi Bonjardim
The association between temporomandibular disorders (TMDs) and headaches, cervical spine dysfunction, and fibromyalgia is not artefactual. The aim of this review is to describe the comorbid relationship between TMD and these three major painful conditions and to discuss the clinical implications and the underlying pain mechanisms involved in these relationships. Common neuronal pathways and central sensitization processes are acknowledged as the main factors for the association between TMD and primary headaches, although the establishment of cause-effect mechanisms requires further clarification and characterization...
March 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28147267/abnormal-development-of-the-earliest-cortical-circuits-in-a-mouse-model-of-autism-spectrum-disorder
#15
Daniel A Nagode, Xiangying Meng, Daniel E Winkowski, Ed Smith, Hamza Khan-Tareen, Vishnupriya Kareddy, Joseph P Y Kao, Patrick O Kanold
Autism spectrum disorder (ASD) involves deficits in speech and sound processing. Cortical circuit changes during early development likely contribute to such deficits. Subplate neurons (SPNs) form the earliest cortical microcircuits and are required for normal development of thalamocortical and intracortical circuits. Prenatal valproic acid (VPA) increases ASD risk, especially when present during a critical time window coinciding with SPN genesis. Using optical circuit mapping in mouse auditory cortex, we find that VPA exposure on E12 altered the functional excitatory and inhibitory connectivity of SPNs...
January 31, 2017: Cell Reports
https://www.readbyqxmd.com/read/28146472/gamma-oscillations-organize-top-down-signalling-to-hypothalamus-and-enable-food-seeking
#16
Marta Carus-Cadavieco, Maria Gorbati, Li Ye, Franziska Bender, Suzanne van der Veldt, Christin Kosse, Christoph Börgers, Soo Yeun Lee, Charu Ramakrishnan, Yubin Hu, Natalia Denisova, Franziska Ramm, Emmanouela Volitaki, Denis Burdakov, Karl Deisseroth, Alexey Ponomarenko, Tatiana Korotkova
Both humans and animals seek primary rewards in the environment, even when such rewards do not correspond to current physiological needs. An example of this is a dissociation between food-seeking behaviour and metabolic needs, a notoriously difficult-to-treat symptom of eating disorders. Feeding relies on distinct cell groups in the hypothalamus, the activity of which also changes in anticipation of feeding onset. The hypothalamus receives strong descending inputs from the lateral septum, which is connected, in turn, with cortical networks, but cognitive regulation of feeding-related behaviours is not yet understood...
February 9, 2017: Nature
https://www.readbyqxmd.com/read/28137663/central-mechanisms-of-airway-sensation-and-cough-hypersensitivity
#17
REVIEW
Alexandria K Driessen, Alice E McGovern, Monica Narula, Seung-Kwon Yang, Jennifer A Keller, Michael J Farrell, Stuart B Mazzone
The airway sensory nervous system is composed of two anatomically distinct processing pathways that allow for the production of respiratory reflexes and voluntary evoked respiratory behaviours in response to sensing an airway irritation. Disordered sensory processing is a hallmark feature of many pulmonary disorders and results in the development of cough hypersensitivity syndrome, characterised by chronic cough and a persistent urge-to-cough in affected individuals. However, the mechanism underpinning how the airway sensory circuits become disordered, especially at the level of the central nervous system, is not well understood...
January 27, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28132813/the-fabric-of-meaning-and-subjective-effects-in-lsd-induced-states-depend-on-serotonin-2a-receptor-activation
#18
Katrin H Preller, Marcus Herdener, Thomas Pokorny, Amanda Planzer, Rainer Kraehenmann, Philipp Stämpfli, Matthias E Liechti, Erich Seifritz, Franz X Vollenweider
A core aspect of the human self is the attribution of personal relevance to everyday stimuli enabling us to experience our environment as meaningful [1]. However, abnormalities in the attribution of personal relevance to sensory experiences are also critical features of many psychiatric disorders [2, 3]. Despite their clinical relevance, the neurochemical and anatomical substrates enabling meaningful experiences are largely unknown. Therefore, we investigated the neuropharmacology of personal relevance processing in humans by combining fMRI and the administration of the mixed serotonin (5-HT) and dopamine receptor (R) agonist lysergic acid diethylamide (LSD), well known to alter the subjective meaning of percepts, with and without pretreatment with the 5-HT2AR antagonist ketanserin...
February 6, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28132066/a-hypothesis-and-pilot-study-of-age-related-sensory-innervation-of-the-hard-palate-sensory-disorder-after-nasopalatine-nerve-division
#19
Jiyuan Liu, Xiufen Li, Liyuan Ma, Jian Pan, Xiufa Tang, Yunlong Wu, Chengge Hua
BACKGROUND The nasopalatine nerve may be injured during extraction of teeth embedded in the anterior hard palate. The neural recovery process and its impact on sensation in the anterior hard palatal region are controversial. In our clinical practice, we noticed a distinct recovery process in children compared with adolescents or adults after surgery. We hypothesized that the sensory innervations of the anterior palate might shift during later childhood and pre-adolescence, which is due to the development of the nasopalatine nerve along with the maxillary growth and permanent teeth eruption...
January 29, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28128341/mastoid-vibration-affects-dynamic-postural-control-during-gait-in-healthy-older-adults
#20
Jung Hung Chien, Mukul Mukherjee, Jenny Kent, Nicholas Stergiou
Vestibular disorders are difficult to diagnose early due to the lack of a systematic assessment. Our previous work has developed a reliable experimental design and the result shows promising results that vestibular sensory input while walking could be affected through mastoid vibration (MV) and changes are in the direction of motion. In the present paper, we wanted to extend this work to older adults and investigate how manipulating sensory input through mastoid vibration (MV) could affect dynamic postural control during walking...
January 27, 2017: Scientific Reports
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