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Sensory Processing Disorder

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https://www.readbyqxmd.com/read/28318839/linking-optic-radiation-volume-to-visual-perception-in-schizophrenia-and-bipolar-disorder
#1
Eric A Reavis, Junghee Lee, Jonathan K Wynn, Katherine L Narr, Stephanie N Njau, Stephen A Engel, Michael F Green
People with schizophrenia typically show visual processing deficits on masking tasks and other performance-based measures, while people with bipolar disorder may have related deficits. The etiology of these deficits is not well understood. Most neuroscientific studies of perception in schizophrenia and bipolar disorder have focused on visual processing areas in the cerebral cortex, but perception also depends on earlier components of the visual system that few studies have examined in these disorders. Using diffusion weighted imaging (DWI), we investigated the structure of the primary sensory input pathway to the cortical visual system: the optic radiations...
March 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28316753/a-resting-eeg-study-of-neocortical-hyperexcitability-and-altered-functional-connectivity-in-fragile-x-syndrome
#2
Jun Wang, Lauren E Ethridge, Matthew W Mosconi, Stormi P White, Devin K Binder, Ernest V Pedapati, Craig A Erickson, Matthew J Byerly, John A Sweeney
BACKGROUND: Cortical hyperexcitability due to abnormal fast-spiking inhibitory interneuron function has been documented in fmr1 KO mice, a mouse model of the fragile X syndrome which is the most common single gene cause of autism and intellectual disability. METHODS: We collected resting state dense-array electroencephalography data from 21 fragile X syndrome (FXS) patients and 21 age-matched healthy participants. RESULTS: FXS patients exhibited greater gamma frequency band power, which was correlated with social and sensory processing difficulties...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28298887/automated-operant-conditioning-in-the-mouse-home-cage
#3
Nikolas A Francis, Patrick O Kanold
Recent advances in neuroimaging and genetics have made mice an advantageous animal model for studying the neurophysiology of sensation, cognition, and locomotion. A key benefit of mice is that they provide a large population of test subjects for behavioral screening. Reflex-based assays of hearing in mice, such as the widely used acoustic startle response, are less accurate than operant conditioning in measuring auditory processing. To date, however, there are few cost-effective options for scalable operant conditioning systems...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28294462/disruption-of-white-matter-structural-integrity-and-connectivity-in-posttraumatic-stress-disorder-a-tbss-and-tractography-study
#4
Elizabeth A Olson, Jiaolong Cui, Rena Fukunaga, Lisa D Nickerson, Scott L Rauch, Isabelle M Rosso
BACKGROUND: Most studies of brain white matter (WM) in posttraumatic stress disorder (PTSD) have focused on combat trauma, and often were confounded by neurological and substance dependence comorbidity. This study used tract-based spatial statistics (TBSS) and probabilistic tractography to characterize WM microstructure in a mixed-sex community sample of PTSD patients exposed to diverse and multiple traumas, and in trauma-exposed normal comparison (TENC) subjects. METHODS: TBSS compared diffusion measures between 20 adults with DSM-IV PTSD and 17 TENC, using a whole-brain voxel-wise approach...
March 15, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28289063/photoreceptor-cilia-and-retinal-ciliopathies
#5
Kinga M Bujakowska, Qin Liu, Eric A Pierce
Photoreceptors are sensory neurons designed to convert light stimuli into neurological responses. This process, called phototransduction, takes place in the outer segments (OS) of rod and cone photoreceptors. OS are specialized sensory cilia, with analogous structures to those present in other nonmotile cilia. Deficient morphogenesis and/or dysfunction of photoreceptor sensory cilia (PSC) caused by mutations in a variety of photoreceptor-specific and common cilia genes can lead to inherited retinal degenerations (IRDs)...
March 13, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28286962/relationship-between-physiological-and-parent-observed-auditory-over-responsiveness-in-children-with-typical-development-and-those-with-autism-spectrum-disorders
#6
Hidetoshi Takahashi, Takayuki Nakahachi, Andrew Stickley, Makoto Ishitobi, Yoko Kamio
The objective of this study was to investigate relationships between caregiver-reported sensory processing abnormalities, and the physiological index of auditory over-responsiveness evaluated using acoustic startle response measures, in children with autism spectrum disorders and typical development. Mean acoustic startle response magnitudes in response to 65-105 dB stimuli, in increments of 10 dB, were analyzed in children with autism spectrum disorders and with typical development. Average peak startle latency was also examined...
December 1, 2016: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/28284787/sensory-over-responsivity-and-social-cognition-in-asd-effects-of-aversive-sensory-stimuli-and-attentional-modulation-on-neural-responses-to-social-cues
#7
Shulamite A Green, Leanna M Hernandez, Hilary C Bowman, Susan Y Bookheimer, Mirella Dapretto
Sensory over-responsivity (SOR) is a common condition in autism spectrum disorders (ASD) that is associated with greater social impairment. However, the mechanisms through which sensory stimuli may affect social functioning are not well understood. This study used fMRI to examine brain activity while interpreting communicative intent in 15 high-functioning youth with ASD and 16 age- and IQ-matched typically-developing (TD) controls. Participants completed the task with and without a tactile sensory distracter, and with and without instructions directing their attention to relevant social cues...
February 21, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28283845/brief-report-biological-sound-processing-in-children-with-autistic-spectrum-disorder
#8
Melissa Lortie, Léa Proulx-Bégin, Dave Saint-Amour, Dominique Cousineau, Hugo Théoret, Jean-François Lepage
There is debate whether social impairments in autism spectrum disorder (ASD) are truly domain-specific, or if they reflect generalized deficits in lower-level cognitive processes. To solve this issue, we used auditory-evoked EEG responses to assess novelty detection (MMN component) and involuntary attentional orientation (P3 component) induced by socially-relevant, human-produced, biological sounds and acoustically-matched control stimuli in children with ASD and controls. Results show that early sensory and novelty processing of biological stimuli are preserved in ASD, but that automatic attentional orientation for biological sounds is markedly altered...
March 10, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28263800/the-role-of-the-retina-in-visual-hallucinations-a-review-of-the-literature-and-implications-for-psychosis
#9
REVIEW
Florent Bernardin, Raymund Schwan, Laurence Lalanne, Fabienne Ligier, Karine Angioi-Duprez, Thomas Schwitzer, Vincent Laprevote
Visual hallucinations are a psychotic symptom present in numerous clinical conditions such as eye disease, Parkinsonian syndromes, neurodegenerative disorders and psychosis. Alteration of low level visual processing is a common feature in these clinical conditions, and various stages of processing from the retina to visual cortices are involved. We undertook a literature review of abnormalities of the retina and their potential link with the occurrence of VHs in these clinical conditions of interest. We found that structural and functional abnormalities of the retina are frequently present...
March 2, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28261144/parallel-distinct-structures-of-internal-world-and-external-reality-disavowing-and-re-claiming-the-self-identity-in-the-aftermath-of-trauma-generated-dissociation
#10
Vedat Şar
The nature of consciousness and the autonomy of the individual's mind have been a focus of interest throughout the past century and inspired many theories and models. Revival of studies on psychological trauma and dissociation, which remained outside mainstream psychiatry, psychology, and psychoanalysis for the most part of the past century, has provided a new opportunity to revisit this intellectual and scientific endeavor. This paper attempts to integrate a series of empirical and theoretical studies on psychological consequences of developmental traumatization, which may yield further insight into factors which threaten the integrity of human consciousness...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28261110/the-neuroinflammatory-etiopathology-of-myalgic-encephalomyelitis-chronic-fatigue-syndrome-me-cfs
#11
Julian A G Glassford
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is a debilitating multi-systemic chronic illness of unknown etiology, classified as a neurological disorder by the World Health Organization (WHO). The symptomatology of the condition appears to emanate from a variety of sources of chronic neurological disturbance and associated distortions, and chronicity, in noxious sensory signaling and neuroimmune activation. This article incorporates a summary review and discussion of biomedical research considered relevant to this essential conception perspective...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28261072/vision-research-literature-may-not-represent-the-full-intellectual-range-of-autism-spectrum-disorder
#12
REVIEW
Alyse C Brown, Philippe A Chouinard, Sheila G Crewther
Sensory, in particular visual processing is recognized as often perturbed in individuals with Autism Spectrum Disorder (ASD). However, in terms of the literature pertaining to visual processing, individuals in the normal intelligence range (IQ = 90-110) and above, are more frequently represented in study samples than individuals who score below normal in the borderline intellectual disability (ID) (IQ = 71-85) to ID (IQ < 70) ranges. This raises concerns as to whether or not current research is generalizable to a disorder that is often co-morbid with ID...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28256690/-sensory-integration-benefits-and-effectiveness-of-therapeutic-management-in-sensory-processing-disorders
#13
M Tudela-Torras, L Abad-Mas, E Tudela-Torras
Today, the fact that sensory integration difficulties with a neurological basis exist and that they seriously condition the development of those individuals who suffer from them is widely accepted and acknowledged as being obvious by the vast majority of professionals working in the field of community healthcare. However, less is known and there is more controversy about effective treatments that can be applied to them. This is because many professionals criticise the fact that there is not enough scientific evidence to prove, both quantitatively and empirically, the outcomes of the interventions implemented as alternatives to pharmacological therapy...
February 24, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28254649/altered-perceptual-pseudoneglect-in-adhd-evidence-for-a-functional-disconnection-from-early-visual-activation
#14
Jiaqing Chen, Matthias Niemeier
Novel insights into the right-brain dominant functions of spatial attention and visual awareness may come from the peculiar observation that the attentional bias to the left in healthy individuals, called "pseudoneglect," increases with visual noise superimposed onto test stimuli. However, it is unclear if this effect originates from noise activating early visual areas or causing higher-level cognitive interference. Cognitive distraction and load are known to induce neglect-like rightward biases in attention deficit hyperactivity disorder (ADHD)...
February 28, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28252425/-features-of-the-treatment-of-the-spine-in-rheumatoid-arthritis
#15
S Selezneva, O Sinyachenko, А Zabara
Rheumatoid arthritis (RA) refers to the most common inflammatory joint disease, which can lead to persistent disability and early mortality of patients, and one of the manifestations of RA is a frequent lesion of the spine, which significantly affects the quality of life of these patients. OBJECTIVE: To evaluate spine lesion in patients with different types of current RA and factors that determine it. MATERIAL AND METHODS: Under the supervision of the RA patient 131 was aged 18 to 79 years (mean 45 years) among them was 18% male and 82% female...
January 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28246641/coordinated-infraslow-neural-and-cardiac-oscillations-mark-fragility-and-offline-periods-in-mammalian-sleep
#16
Sandro Lecci, Laura M J Fernandez, Frederik D Weber, Romain Cardis, Jean-Yves Chatton, Jan Born, Anita Lüthi
Rodents sleep in bouts lasting minutes; humans sleep for hours. What are the universal needs served by sleep given such variability? In sleeping mice and humans, through monitoring neural and cardiac activity (combined with assessment of arousability and overnight memory consolidation, respectively), we find a previously unrecognized hallmark of sleep that balances two fundamental yet opposing needs: to maintain sensory reactivity to the environment while promoting recovery and memory consolidation. Coordinated 0...
February 2017: Science Advances
https://www.readbyqxmd.com/read/28240187/the-endocannabinoid-system-modulating-levels-of-consciousness-emotions-and-likely-dream-contents
#17
Eric Murillo-Rodriguez, José Carlos Pastrana-Trejo, Mireille Salas-Crisóstomo, Miriel de-la-Cruz
Cannabinoids are derivatives that are either compounds occurring naturally in the plant, Cannabis sativa or synthetic analogs of these molecules. The first and most widely investigated of the cannabinoids is ∆9-tetrahydrocannabinol (Δ9-THC), which is the main psychotropic constituent of cannabis and undergoes significant binding to cannabinoid receptors. These cannabinoid receptors are seven-transmembrane receptors that received their name from the fact that they respond to cannabinoid compounds, including Δ9-THC...
February 23, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28239517/cortical-interactions-during-the-resolution-of-information-processing-demands-in-autism-spectrum-disorders
#18
Kristina Denisova, Guihu Zhao, Zhishun Wang, Suzanne Goh, Yuankai Huo, Bradley S Peterson
INTRODUCTION: Our flexible and adaptive interactions with the environment are guided by our individual representation of the physical world, estimated through sensation and evaluation of available information against prior knowledge. When linking sensory evidence with higher-level expectations for action, the central nervous system (CNS) in typically developing (TD) individuals relies in part on distributed and interacting cortical regions to communicate neuronal signals flexibly across the brain...
February 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28223982/mouse-model-of-neurological-complications-resulting-from-encephalitic-alphavirus-infection
#19
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
#20
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
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