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https://www.readbyqxmd.com/read/28284567/the-analysis-of-three-dimensional-ground-reaction-forces-during-gait-in-children-with-autism-spectrum-disorders
#1
C Z C Hasan, Rozita Jailani, N Md Tahir, Suryani Ilias
Minimal information is known about the three-dimensional (3D) ground reaction forces (GRF) on the gait patterns of individuals with autism spectrum disorders (ASD). The purpose of this study was to investigate whether the 3D GRF components differ significantly between children with ASD and the peer controls. 15 children with ASD and 25 typically developing (TD) children had participated in the study. Two force plates were used to measure the 3D GRF data during walking. Time-series parameterization techniques were employed to extract 17 discrete features from the 3D GRF waveforms...
March 8, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28120370/modelling-gesture-use-and-early-language-development-in-autism-spectrum-disorder
#2
Stacy S Manwaring, Danielle L Mead, Lauren Swineford, Audrey Thurm
BACKGROUND: Nonverbal communication abilities, including gesture use, are impaired in autism spectrum disorder (ASD). However, little is known about how common gestures may influence or be influenced by other areas of development. AIMS: To examine the relationships between gesture, fine motor and language in young children with ASD compared with a comparison group using multiple measures and methods in a structural equation modelling framework. METHODS & PROCEDURES: Participants included 110 children with ASD and a non-ASD comparison group of 87 children (that included children with developmental delays (DD) or typical development (TD)), from 12 to 48 months of age...
January 24, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/27933108/postural-orientation-and-equilibrium-processes-associated-with-increased-postural-sway-in-autism-spectrum-disorder-asd
#3
Zheng Wang, Rami R Hallac, Kaitlin C Conroy, Stormi P White, Alex A Kane, Amy L Collinsworth, John A Sweeney, Matthew W Mosconi
BACKGROUND: Increased postural sway has been repeatedly documented in children with autism spectrum disorder (ASD). Characterizing the control processes underlying this deficit, including postural orientation and equilibrium, may provide key insights into neurophysiological mechanisms associated with ASD. Postural orientation refers to children's ability to actively align their trunk and head with respect to their base of support, while postural equilibrium is an active process whereby children coordinate ankle dorsi-/plantar-flexion and hip abduction/adduction movements to stabilize their upper body...
2016: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/27885946/epilepsy-surgery-in-patients-with-autism
#4
Malgosia A Kokoszka, Patricia E McGoldrick, Maite La Vega-Talbott, Hillary Raynes, Christina A Palmese, Steven M Wolf, Cynthia L Harden, Saadi Ghatan
OBJECTIVE The purpose of this study was to report outcomes of epilepsy surgery in 56 consecutive patients with autism spectrum disorder. METHODS Medical records of 56 consecutive patients with autism who underwent epilepsy surgery were reviewed with regard to clinical characteristics, surgical management, postoperative seizure control, and behavioral changes. RESULTS Of the 56 patients with autism, 39 were male, 45 were severely autistic, 27 had a history of clinically significant levels of aggression and other disruptive behaviors, and 30 were considered nonverbal at baseline...
February 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27869148/motor-noise-is-rich-signal-in-autism-research-and-pharmacological-treatments
#5
E B Torres, K Denisova
The human body is in constant motion, from every breath that we take, to every visibly purposeful action that we perform. Remaining completely still on command is a major achievement as involuntary fluctuations in our motions are difficult to keep under control. Here we examine the noise-to-signal ratio of micro-movements present in time-series of head motions extracted from resting-state functional magnetic resonance imaging scans in 1048 participants. These included individuals with autism spectrum disorders (ASD) and healthy-controls in shared data from the Autism Brain Imaging Data Exchange (ABIDE) and the Attention-Deficit Hyperactivity Disorder (ADHD-200) databases...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27857688/modulation-plasticity-and-pathophysiology-of-the-parallel-fiber-purkinje-cell-synapse
#6
REVIEW
Eriola Hoxha, Filippo Tempia, Pellegrino Lippiello, Maria Concetta Miniaci
The parallel fiber-Purkinje cell (PF-PC) synapse represents the point of maximal signal divergence in the cerebellar cortex with an estimated number of about 60 billion synaptic contacts in the rat and 100,000 billions in humans. At the same time, the Purkinje cell dendritic tree is a site of remarkable convergence of more than 100,000 parallel fiber synapses. Parallel fiber activity generates fast postsynaptic currents via α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors, and slower signals, mediated by mGlu1 receptors, resulting in Purkinje cell depolarization accompanied by sharp calcium elevation within dendritic regions...
2016: Frontiers in Synaptic Neuroscience
https://www.readbyqxmd.com/read/27825584/autism-in-patients-with-propionic-acidemia
#7
Peter Witters, Eric Debbold, Kea Crivelly, Kristel Vande Kerckhove, Karen Corthouts, Brett Debbold, Hans Andersson, Lena Vannieuwenborg, Sam Geuens, Matthias Baumgartner, Tamas Kozicz, Lisa Settles, Eva Morava
Certain inborn errors of metabolism have been suggested to increase the risk of autistic behavior. In an animal model, propionic acid ingestion triggered abnormal behavior resembling autism. So far only a few cases were reported with propionic acidemia and autistic features. From a series of twelve consecutively diagnosed cases with propionic acidemia, we report on eight patients with autistic features. The patients were followed 2-4 times a year and underwent regular clinical, dietary and laboratory investigations...
December 2016: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/27739580/establishing-motion-control-in-children-with-autism-and-intellectual-disability-applications-for-anatomical-and-functional-mri
#8
Alison D Cox, Javier Virues-Ortega, Flavia Julio, Toby L Martin
Excessive motion makes magnetic resonance imaging (MRI) extremely challenging among children with autism spectrum disorder (ASD). The medical risks of sedation establish the need for behavioral interventions to promote motion control among children with ASD undergoing MRI scans. We present a series of experiments aimed at establishing both tolerance of the MRI environment and a level of motion control that would be compatible with a successful MRI. During Study 1, we evaluated the effects of prompting and contingent reinforcement on compliance with a sequence of successive approximations to an MRI using a mock MRI...
October 14, 2016: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/27679841/picture-exchange-communication-system-and-pals-a-peer-mediated-augmentative-and-alternative-communication-intervention-for-minimally-verbal-preschoolers-with-autism
#9
Kathy Thiemann-Bourque, Nancy Brady, Sara McGuff, Keenan Stump, Amy Naylor
Purpose: This study was conducted to investigate the effectiveness of a social intervention that integrates peer-mediated approaches and the Picture Exchange Communication System (PECS). Method: Effects were evaluated using a series of A-B designs replicated across 4 children with severe autism and limited verbal skills. Seven peers without disabilities were trained to use PECS and facilitative social skills. Measures of changes included rates of communication behaviors, modes, functions, and engagement...
September 27, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/27615053/phenotype-of-7q11-23-duplication-a-family-clinical-series
#10
Beth A Earhart, Marian E Williams, Irina Zamora, Linda Marie Randolph, Jodie K Votava-Smith, Stephanie N Marcy
Duplication 7q11.23 syndrome is the reciprocal of Williams-Beuren deletion syndrome. Studies have reported a recognizable phenotype, including autism, intellectual disability, speech, and language delay, social anxiety, and behavioral difficulties in these individuals. Previous studies revealed a variety of craniofacial abnormalities, brain malformations, and cardiac abnormalities, including aortic dilation. This patient series evaluates five family members aged 2 months to 35 years, all with confirmed 7q11...
January 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/27585835/identifying-differences-in-brain-activities-and-an-accurate-detection-of-autism-spectrum-disorder-using-resting-state-functional-magnetic-resonance-imaging-a-spatial-filtering-approach
#11
Vigneshwaran Subbaraju, Mahanand Belathur Suresh, Suresh Sundaram, Sundararajan Narasimhan
This paper presents a new approach for detecting major differences in brain activities between Autism Spectrum Disorder (ASD) patients and neurotypical subjects using the resting state fMRI. Further the method also extracts discriminative features for an accurate diagnosis of ASD. The proposed approach determines a spatial filter that projects the covariance matrices of the Blood Oxygen Level Dependent (BOLD) time-series signals from both the ASD patients and neurotypical subjects in orthogonal directions such that they are highly separable...
August 23, 2016: Medical Image Analysis
https://www.readbyqxmd.com/read/27465558/altered-brain-network-dynamics-in-youths-with-autism-spectrum-disorder
#12
Evie Malaia, Erik Bates, Benjamin Seitzman, Katherine Coppess
The heterogeneity of behavioral manifestation of autism spectrum disorders (ASDs) requires a model which incorporates understanding of dynamic differences in neural processing between ASD and typically developing (TD) populations. We use network approach to characterization of spatiotemporal dynamics of EEG data in TD and ASD youths. EEG recorded during both wakeful rest (resting state) and a social-visual task was analyzed using cross-correlation analysis of the 32-channel time series to produce weighted, undirected graphs corresponding to functional brain networks...
December 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27372861/targeting-the-ecology-within-the-role-of-the-gut-brain-axis-and-human-microbiota-in-drug-addiction
#13
Patrick D Skosnik, Jose A Cortes-Briones
Despite major advances in our understanding of the brain using traditional neuroscience, reliable and efficacious treatments for drug addiction have remained elusive. Hence, the time has come to utilize novel approaches, particularly those drawing upon contemporary advances in fields outside of established neuroscience and psychiatry. Put another way, the time has come for a paradigm shift in the addiction sciences. Apropos, a revolution in the area of human health is underway, which is occurring at the nexus between enteric microbiology and neuroscience...
August 2016: Medical Hypotheses
https://www.readbyqxmd.com/read/27366069/early-diagnosis-and-early-start-denver-model-intervention-in-autism-spectrum-disorders-delivered-in-an-italian-public-health-system-service
#14
Raffaella Devescovi, Lorenzo Monasta, Alice Mancini, Maura Bin, Valerio Vellante, Marco Carrozzi, Costanza Colombi
BACKGROUND: Early diagnosis combined with an early intervention program, such as the Early Start Denver Model (ESDM), can positively influence the early natural history of autism spectrum disorders. This study evaluated the effectiveness of an early ESDM-inspired intervention, in a small group of toddlers, delivered at low intensity by the Italian Public Health System. METHODS: Twenty-one toddlers at risk for autism spectrum disorders, aged 20-36 months, received 3 hours/wk of one-to-one ESDM-inspired intervention by trained therapists, combined with parents' and teachers' active engagement in ecological implementation of treatment...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27341210/exploring-the-use-of-sensorial-ltp-ltd-like-stimulation-to-modulate-human-performance-for-complex-visual-stimuli
#15
Felipe Pegado, Hendrik Vankrunkelsven, Jean Steyaert, Bart Boets, Hans Op de Beeck
Is it possible to passively induce visual learning/unlearning in humans for complex stimuli such as faces? We addressed this question in a series of behavioral studies using passive visual stimulation (flickering of faces at specific temporal frequencies) inspired by well-known synaptic mechanisms of learning: long-term potentiation (LTP) vs long-term depression (LTD). We administered a face identity change detection task before and after a passive stimulation protocol to test for potential changes in visual performance...
2016: PloS One
https://www.readbyqxmd.com/read/27268457/decreasing-stereotypy-using-ncr-and-dro-with-functionally-matched-stimulation-effects-on-targeted-and-non-targeted-stereotypy
#16
John T Rapp, Jennifer L Cook, Catherine McHugh, Kathryn R Mann
We conducted a series of studies on multiple forms of repetitive behavior displayed by four children with autism spectrum disorder. Study 1 showed that each participant's highest probability repetitive behavior persisted in the absence of social consequences, thereby meeting the functional definition of stereotypy. Study 2 showed that preferred, structurally matched stimulation decreased each participant's targeted (highest probability) stereotypy, as well as their non-targeted (lower probability) stereotypy...
June 7, 2016: Behavior Modification
https://www.readbyqxmd.com/read/27211327/a-comparative-consecutive-case-series-of%C3%A2-20-children-with-a-diagnosis-of-adhd-receiving-homeopathic-treatment-compared-with-10-children-receiving-usual%C3%A2-care
#17
Philippa Fibert, Clare Relton, Morag Heirs, Deborah Bowden
UNLABELLED: 20 consecutively enrolled children age 5-16 with Attention Deficit Hyperactivity Disorder (ADHD) received treatment by a homeopath (8 consultations and individualized remedies) for one year. Ten subsequently enrolled children received similar time and attention for 4 months. The study explored optimum treatment protocols; the effectiveness, deliverability and acceptability of treatment; and the feasibility of outcome measurement and recruitment. Parents completed Conners' Parent Rating Scale, Revised Long Version ( CPRS-R: L) every 4 months, from which DSMIV total scores were extracted; and Measure Your Own Medical Outcome Profile (MYMOP) every consultation...
May 2016: Homeopathy: the Journal of the Faculty of Homeopathy
https://www.readbyqxmd.com/read/27158271/methods-for-acquiring-mri-data-in-children-with-autism-spectrum-disorder-and-intellectual-impairment-without-the-use-of-sedation
#18
Christine Wu Nordahl, Melissa Mello, Audrey M Shen, Mark D Shen, Laurie A Vismara, Deana Li, Kayla Harrington, Costin Tanase, Beth Goodlin-Jones, Sally Rogers, Leonard Abbeduto, David G Amaral
BACKGROUND: Magnetic resonance imaging (MRI) has been widely used in studies evaluating the neuropathology of autism spectrum disorder (ASD). Studies are often limited, however, to higher functioning individuals with ASD. MRI studies of individuals with ASD and comorbid intellectual disability (ID) are lacking, due in part to the challenges of acquiring images without the use of sedation. METHODS: Utilizing principles of applied behavior analysis (ABA), we developed a protocol for acquiring structural MRI scans in school-aged children with ASD and intellectual impairment...
2016: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/26880485/sex-biased-gene-expression-profiling-of-human-brains-at-major-developmental-stages
#19
Lei Shi, Zhe Zhang, Bing Su
There are many differences in brain structure and function between males and females. However, how these differences were manifested during development and maintained through adulthood are still unclear. Here we present a time series analyses of genome-wide transcription profiles of the human brain, and we identified genes showing sex biased expression at major developmental stages (prenatal time, early childhood, puberty time and adulthood). We observed a great number of genes (>2,000 genes) showing between-sex expression divergence at all developmental stages with the greatest number (4,164 genes) at puberty time...
February 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/26868825/full-field-electroretinogram-in-autism-spectrum-disorder
#20
Paul A Constable, Sebastian B Gaigg, Dermot M Bowler, Herbert Jägle, Dorothy A Thompson
PURPOSE: To explore early findings that individuals with autism spectrum disorder (ASD) have reduced scotopic ERG b-wave amplitudes. METHODS: Light-adapted (LA) and dark-adapted (DA) ERGs were produced by a range of flash strengths that included and extended the ISCEV standard from two subject groups: a high-functioning ASD group N = 11 and a Control group N = 15 for DA and N = 14 for LA ERGs who were matched for mean age and range. Flash strengths ranged from DA -4...
April 2016: Documenta Ophthalmologica. Advances in Ophthalmology
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