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Sensory integration disorder

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https://www.readbyqxmd.com/read/29050394/cortical-neurons-and-networks-are-dormant-but-fully-responsive-during-isoelectric-brain-state
#1
Tristan Altwegg-Boussac, Adrien E Schramm, Jimena Ballestero, Fanny Grosselin, Mario Chavez, Sarah Lecas, Michel Baulac, Lionel Naccache, Sophie Demeret, Vincent Navarro, Séverine Mahon, Stéphane Charpier
A continuous isoelectric electroencephalogram reflects an interruption of endogenously-generated activity in cortical networks and systematically results in a complete dissolution of conscious processes. This electro-cerebral inactivity occurs during various brain disorders, including hypothermia, drug intoxication, long-lasting anoxia and brain trauma. It can also be induced in a therapeutic context, following the administration of high doses of barbiturate-derived compounds, to interrupt a hyper-refractory status epilepticus...
September 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29049598/cortical-and-sensory-causes-of-individual-differences-in-selective-attention-ability-among-listeners-with-normal-hearing-thresholds
#2
Barbara Shinn-Cunningham
Purpose: This review provides clinicians with an overview of recent findings relevant to understanding why listeners with normal hearing thresholds (NHTs) sometimes suffer from communication difficulties in noisy settings. Method: The results from neuroscience and psychoacoustics are reviewed. Results: In noisy settings, listeners focus their attention by engaging cortical brain networks to suppress unimportant sounds; they then can analyze and understand an important sound, such as speech, amidst competing sounds...
October 17, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/29036855/diagnostic-criteria-for-persistent-postural-perceptual-dizziness-pppd-consensus-document-of-the-committee-for-the-classification-of-vestibular-disorders-of-the-b%C3%A3-r%C3%A3-ny-society
#3
Jeffrey P Staab, Annegret Eckhardt-Henn, Arata Horii, Rolf Jacob, Michael Strupp, Thomas Brandt, Adolfo Bronstein
This paper presents diagnostic criteria for persistent postural-perceptual dizziness (PPPD) to be included in the International Classification of Vestibular Disorders (ICVD). The term PPPD is new, but the disorder is not. Its diagnostic criteria were derived by expert consensus from an exhaustive review of 30 years of research on phobic postural vertigo, space-motion discomfort, visual vertigo, and chronic subjective dizziness. PPPD manifests with one or more symptoms of dizziness, unsteadiness, or non-spinning vertigo that are present on most days for three months or more and are exacerbated by upright posture, active or passive movement, and exposure to moving or complex visual stimuli...
October 7, 2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29033857/an-update-overview-on-brain-imaging-studies-of-internet-gaming-disorder
#4
REVIEW
Aviv M Weinstein
There are a growing number of studies on structural and functional brain mechanisms underlying Internet gaming disorder (IGD). Recent functional magnetic resonance imaging studies showed that IGD adolescents and adults had reduced gray matter volume in regions associated with attention motor coordination executive function and perception. Adolescents with IGD showed lower white matter (WM) integrity measures in several brain regions that are involved in decision-making, behavioral inhibition, and emotional regulation...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29030901/disrupted-integration-of-exteroceptive-and-interoceptive-signaling-in-autism-spectrum-disorder
#5
Jean-Paul Noel, Marisa Lytle, Carissa Cascio, Mark T Wallace
In addition to deficits in social communication, individuals diagnosed with Autism Spectrum Disorder (ASD) frequently exhibit changes in sensory and multisensory function. Recent evidence has focused on changes in audiovisual temporal processing, and has sought to relate these sensory-based changes to weaknesses in social communication. These changes in audiovisual temporal function manifest as differences in the temporal epoch or "window" within which paired auditory and visual stimuli are integrated or bound, with those with ASD exhibiting expanded audiovisual temporal binding windows (TBWs)...
October 14, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/29017141/premonitory-urges-and-tics-in-tourette-syndrome-computational-mechanisms-and-neural-correlates
#6
REVIEW
Vasco A Conceição, Ângelo Dias, Ana C Farinha, Tiago V Maia
Tourette syndrome is characterized by open motor behaviors - tics - but another crucial aspect of the disorder is the presence of premonitory urges: uncomfortable sensations that typically precede tics and are temporarily alleviated by tics. We review the evidence implicating the somatosensory cortices and the insula in premonitory urges and the motor cortico-basal ganglia-thalamo-cortical loop in tics. We consider how these regions interact during tic execution, suggesting that the insula plays an important role as a nexus linking the sensory and emotional character of premonitory urges with their translation into tics...
October 7, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28981226/-balance-disorders
#7
C Van Nechel
Balance disorders may result from an impairment of one of the sensorial modalities involved in the perception of the self-location in space: vestibular, proprioception and vision, a deficit of the neuronal multisensorial integration, a less effective motor or loco-motor system, the medication side effects or psychological interferences. The basic examination of a dizzy patient implies the assessment of these different aspects. The balance is not restricted to à set of reflexes. It is a distinctive expression of the sixth sense : the sense of orientation...
2017: Revue Médicale de Bruxelles
https://www.readbyqxmd.com/read/28980779/-equilibrium-management
#8
Jean-Philippe Guyot
Balance requires the modulation and integration of multiple sensory information, among which the vestibular apparatus of the inner ear plays an essential role. The management of all informations is assumed by a system whose adaptive capacities are much faster than we thought until recently, as demonstrated by the experiments carried out in human during the development of a vestibular implant designed to restore the lost function. While these adaptive capacities have the advantage of allowing all kinds of activities, they also have the disadvantage of producing various sensations, sometimes very strange...
October 4, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28971481/transcranial-magnetic-stimulation-studies-in-complex-regional-pain-syndrome-type-i-a-review
#9
REVIEW
R Nardone, F Brigo, Y Höller, L Sebastianelli, V Versace, L Saltuari, P Lochner, E Trinka
The sensory and motor cortical representation corresponding to the affected limb is altered in patients with complex regional pain syndrome (CRPS). Transcranial magnetic stimulation (TMS) represents a useful non-invasive approach for studying cortical physiology. If delivered repetitively, TMS can also modulate cortical excitability and induce long-lasting neuroplastic changes. In this review, we performed a systematic search of all studies using TMS to explore cortical excitability/plasticity and repetitive TMS (rTMS) for the treatment of CRPS...
October 3, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28959187/mechanisms-of-hierarchical-cortical-maturation
#10
REVIEW
Taylor Chomiak, Bin Hu
Cortical information processing is structurally and functionally organized into hierarchical pathways, with primary sensory cortical regions providing modality specific information and associative cortical regions playing a more integrative role. Historically, there has been debate as to whether primary cortical regions mature earlier than associative cortical regions, or whether both primary and associative cortical regions mature simultaneously. Identifying whether primary and associative cortical regions mature hierarchically or simultaneously will not only deepen our understanding of the mechanisms that regulate brain maturation, but it will also provide fundamental insight into aspects of adolescent behavior, learning, neurodevelopmental disorders and computational models of neural processing...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28944474/altered-neural-oscillations-during-multisensory-integration-in-adolescents-with-fetal-alcohol-spectrum-disorder
#11
Alfredo D Bolaños, Brian A Coffman, Felicha T Candelaria-Cook, Piyadasa Kodituwakku, Julia M Stephen
BACKGROUND: Children with fetal alcohol spectrum disorder (FASD), who were exposed to alcohol in utero, display a broad range of sensory, cognitive, and behavioral deficits, which are broadly theorized to be rooted in altered brain function and structure. Based on the role of neural oscillations in multisensory integration from past studies, we hypothesized that adolescents with FASD would show a decrease in oscillatory power during event-related gamma oscillatory activity (30-100Hz), when compared to typically-developing healthy controls (HC), and that such decrease in oscillatory power would predict behavioral performance...
September 25, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28941767/a-proton-mr-spectroscopy-study-of-the-thalamus-in-twins-with-autism-spectrum-disorder
#12
John P Hegarty, Meng Gu, Daniel M Spielman, Sue C Cleveland, Joachim F Hallmayer, Laura C Lazzeroni, Mira M Raman, Thomas W Frazier, Jennifer M Phillips, Allan L Reiss, Antonio Y Hardan
Multiple lines of research have reported thalamic abnormalities in individuals with autism spectrum disorder (ASD) that are associated with social communication impairments (SCI), restricted and repetitive behaviors (RRB), or sensory processing abnormalities (SPA). Thus, the thalamus may represent a common neurobiological structure that is shared across symptom domains in ASD. Same-sex monozygotic (MZ) and dizygotic (DZ) twin pairs with and without ASD underwent cognitive/behavioral evaluation and magnetic resonance imaging to assess the thalamus...
September 20, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28927958/defective-gabaergic-neurotransmission-in-the-nucleus-tractus-solitarius-in-mecp2-null-mice-a-model-of-rett-syndrome
#13
Chao-Yin Chen, Jacopo Di Lucente, Yen-Chu Lin, Cheng-Chang Lien, Michael A Rogawski, Izumi Maezawa, Lee-Way Jin
Rett syndrome (RTT) is a devastating neurodevelopmental disorder caused by loss-of-function mutations in the X-linked methyl-CpG binding protein 2 (Mecp2) gene. GABAergic dysfunction has been implicated contributing to the respiratory dysfunction, one major clinical feature of RTT. The nucleus tractus solitarius (NTS) is the first central site integrating respiratory sensory information that can change the nature of the reflex output. We hypothesized that deficiency in Mecp2 gene reduces GABAergic neurotransmission in the NTS...
September 18, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28919664/developmental-coordination-disorders-and-sensory-processing-and-integration-incidence-associations-and-co-morbidities
#14
Susan Allen, Jackie Casey
INTRODUCTION: Children with developmental coordination disorder or sensory processing and integration difficulties face challenges to participation in daily living. To date there has been no exploration of the co-occurrence of developmental coordination disorders and sensory processing and integration difficulties. METHOD: Records of children meeting Diagnostic and Statistical Manual - V criteria for developmental coordination disorder (n = 93) age 5 to 12 years were examined...
September 2017: British Journal of Occupational Therapy
https://www.readbyqxmd.com/read/28911803/sensory-overload-and-imbalance-resting-state-vestibular-connectivity-in-ptsd-and-its-dissociative-subtype
#15
Sherain Harricharan, Andrew A Nicholson, Maria Densmore, Jean Théberge, Margaret C McKinnon, Richard W J Neufeld, Ruth A Lanius
BACKGROUND: The vestibular system integrates multisensory information to monitor one's bodily orientation in space, and is influenced by interoceptive awareness. Post-traumatic stress disorder (PTSD) involves typically alterations in interoceptive and bodily self-awareness evidenced by symptoms of hyperarousal, as well as of emotional detachment, including emotional numbing, depersonalization, and derealization. These alterations may disrupt vestibular multisensory integration between the brainstem (vestibular nuclei) and key vestibular cortical regions (parieto-insular vestibular cortex, prefrontal cortex)...
September 11, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28890690/a-cohesive-framework-for-motor-stereotypy-in-typical-and-atypical-development-the-role-of-sensorimotor-integration
#16
Robin L Shafer, Karl M Newell, Mark H Lewis, James W Bodfish
Stereotyped motor behavior manifests as rhythmic, repetitive movements. It is common in several neurologic and psychiatric disorders where it is considered maladaptive. However, it also occurs early in typical development where it serves an adaptive function in the development of complex, controlled motor behavior. Currently, no framework accounts for both adaptive and maladaptive forms of motor stereotypy. We propose a conceptual model that implicates sensorimotor mechanisms in the phenomenology of adaptive and maladaptive stereotypy...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28885964/cervical-joint-position-sense-in-hypobaric-conditions-a-randomized-double-blind-controlled-trial
#17
Diana Bagaianu, Damien Van Tiggelen, N Duvigneaud, Veerle Stevens, Danny Schroyen, Dirk Vissenaeken, Gino D'Hondt, Laurent Pitance
Well-adapted motor actions require intact and well-integrated information from all of the sensory systems, specifically the visual, vestibular, and somatosensory systems, including proprioception. Proprioception is involved in the sensorimotor control by providing the central nervous system with an updated body schema of the biomechanical and spatial properties of the body parts. With regard to the cervical spine, proprioceptive information from joint and muscle mechanoreceptors is integrated with vestibular and visual feedback to control head position, head orientation, and whole body posture...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28881362/-sensory-inventory-si-self-assessment-of-sensory-sensitivity-for-adults-and-adolescents
#18
Vera Zamoscik, Christine Niemeyer, Martin Fungisai Gerchen, Sabrina Christina Fenske, Michael Witthöft, Peter Kirsch
An adequate perception of the environment is one of the main foundations of adaptive behavior. Furthermore, sensory sensitivity varies from person to person and can play a central role in the development and course of mental disorders. The objective was the development of a questionnaire for the multidimensional assessment of sensory sensitivity. A total of 1417 persons were evaluated with the Sensory Inventory (SI). The factorial validity was tested with exploratory factor analyses and exploratory structural equation modeling...
September 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28865377/assessing-pain-in-patients-with-chronic-disorders-of-consciousness-are-we-heading-in-the-right-direction
#19
Antonino Naro, Placido Bramanti, Alessia Bramanti, Rocco Salvatore Calabrò
The deterioration of sensory-motor integration within the pain matrix in patients with chronic Disorders of Consciousness (DoC) is one of the principal mechanisms responsible for non-conscious pain perception. The present study aimed to assess whether the variability in the inter-peak interval (IPI) between the N2 and P2 components of laser evoked potentials (LEP) could represent an objective marker of the behavioral responsiveness to nociceptive stimulation, as measured by the Nociception Coma Scale-Revised (NCS-R), and regardless of the sensory part of pain processing...
October 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28831125/exploration-of-the-brain-in-rest-resting-state-functional-mri-abnormalities-in-patients-with-classic-galactosemia
#20
Britt van Erven, Bernadette M Jansma, M Estela Rubio-Gozalbo, Inge Timmers
Patients with classic galactosemia, a genetic metabolic disorder, encounter cognitive impairments, including motor (speech), language, and memory deficits. We used functional magnetic resonance imaging to evaluate spontaneous functional connectivity during rest to investigate potential abnormalities in neural networks. We characterized networks using seed-based correlation analysis in 13 adolescent patients and 13 matched controls. Results point towards alterations in several networks, including well-known resting-state networks (e...
August 22, 2017: Scientific Reports
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