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Neurophysiological correlates of relatively enhanced local visual search in autistic adolescents

Zina M. Manjaly, Nicole Bruning, Susanne Neufang, Klaas E. Stephan, Sarah Brieber, John C. Marshall, Inge Kamp-Becker, Helmut Remschmidt, Beate Herpertz-Dahlmann, Kerstin Konrad, Gereon R. Fink
2007 NeuroImage  
These results suggest that enhanced local processing in early visual areas, as opposed to impaired processing of global context, is characteristic for performance of the EFT by autistic patients.  ...  This study used functional magnetic resonance imaging (fMRI) in 12 autistic adolescents (9 Asperger and 3 high-functioning autistic patients) and 12 matched controls to help distinguish, on neurophysiological  ...  aspects of the EFT but had minimal local visual search requirements.  ... 
doi:10.1016/j.neuroimage.2006.11.036 pmid:17240169 pmcid:PMC2644454 fatcat:veilh6ezmfavvicttau3bhctxe

Developmental heterochrony and the evolution of autistic perception, cognition and behavior

Bernard Crespi
2013 BMC Medicine  
functional brain connectivity, (3) global and local visual perception and processing, and (4) the presence of absolute pitch, the differences between autistic individuals and typically developing individuals  ...  structured genetic risk for autism and the expression of autistic perception, cognition and behavior.  ...  with enhanced local and context-independent processing in autism [5, 82] .  ... 
doi:10.1186/1741-7015-11-119 pmid:23639054 pmcid:PMC3649927 fatcat:mj2fij67lbcqdlmr4bpcsfotfa

Page 3558 of Psychological Abstracts Vol. 92, Issue 10 [page]

2005 Psychological Abstracts  
- lationships with visual search.  ...  Results: In- crease in self-injury over a 2-year period was positively correlated with a dis- tribution of social contact relative to episodes of self-injury that is consistent with a mutual social reinforcement  ... 

Veridical mapping in the development of exceptional autistic abilities

Laurent Mottron, Lucie Bouvet, Anna Bonnel, Fabienne Samson, Jacob A. Burack, Michelle Dawson, Pamela Heaton
2013 Neuroscience and Biobehavioral Reviews  
The enhanced perceptual functioning model (Mottron et al., 2006a) emphasizes the increased role and autonomy of perceptual information processing in autistic cognition.  ...  Superior perception, peaks of ability, and savant skills are often observed in the autistic phenotype.  ...  Similarly, through a specific contrast isolating the local search components of the EFT, Manjaly et al. (2007) observed higher primary visual and extrastriate activity in autistic adolescents compared  ... 
doi:10.1016/j.neubiorev.2012.11.016 pmid:23219745 fatcat:6bzu6xkepvb7pma5ylicq4jcki

Dysregulated Oscillatory Connectivity in the Visual System in Autism Spectrum Disorder [article]

Robert A Seymour, Gina Rippon, Gerard Gooding-Williams, Jan-Mathijs Schoffelen, Klaus Kessler
2018 bioRxiv   pre-print
To elucidate oscillatory dynamics and connectivity in the visual domain we used magnetoencephalography and a simple visual grating paradigm with a group of 18 adolescent autistic participants and 18 typically  ...  This reduction was positively correlated with autistic quotient scores, consistent with an atypical visual hierarchy in autism, characterised by reduced top-down modulation of visual input via alpha-band  ...  Acknowledgments We wish to thank: the volunteers who gave their time to participate in this study; Dr. Jon  ... 
doi:10.1101/440586 fatcat:rqthbwp4rbh3fbfbrvd6feohq4

Dysregulated oscillatory connectivity in the visual system in autism spectrum disorder

2019 Brain  
To elucidate oscillatory dynamics and connectivity in the visual domain we used magnetoencephalography and a simple visual grating paradigm with a group of 18 adolescent autistic participants and 18 typically  ...  This reduction was positively correlated with autistic quotient scores, consistent with an atypical visual hierarchy in autism, characterized by reduced top-down modulation of visual input via alpha-band  ...  Acknowledgements We wish to thank the volunteers who gave their time to participate in this study, and Dr Jon Brock for intellectual contributions to experimental design.  ... 
doi:10.1093/brain/awz214 pmid:31410480 pmcid:PMC6763739 fatcat:mznrt2kj6nextehohiezxuteke

Challenging Weak Central Coherence: A Brief Exploration of Neurological Evidence from Visual Processing and Linguistic Studies in Autism Spectrum Disorder

Jessica Scher Lisa, Eric Shyman
2019 Annals of Behavioral Neuroscience  
" characterization of a strong local coherence.  ...  Previous theories have attempted to locate the root cause of Autism Spectrum Disorder (ASD) in terms of a typical central cognitive processes.  ...  Along the lines of examining individual differences in autistic traits, in studies of visual search tasks (such as the previously mentioned EFT), people with more autistic traits (as measured by the Autism  ... 
doi:10.18314/abne.v2i1.1606 fatcat:v7y6bxnfundannymgxqxfuvp4e

Weak surround suppression of the attentional focus characterizes visual selection in the ventral stream in autism

Luca Ronconi, Simone Gori, Alessandra Federici, Maria Devita, Serena Carna, Maria E. Sali, Massimo Molteni, Luca Casartelli, Andrea Facoetti
2018 NeuroImage: Clinical  
Furthermore, behavioural and neurophysiological measures of weaker suppression predicted more severe autistic symptomatology.  ...  result of recurrent processing in the visual system.  ...  Acknowledgements The contributions of staff members of the Scientific Institute IRCCS "E. Medea" as well as of children and their families are gratefully acknowledged.  ... 
doi:10.1016/j.nicl.2018.02.014 pmid:29876276 pmcid:PMC5988461 fatcat:3u23xre2qzdq3egmg3zoc53xpu

Autism: A world changing too fast for a mis-wired brain?

Bruno Gepner, François Féron
2009 Neuroscience and Biobehavioral Reviews  
In line with this theory, we found that slowing down the speed of facial and vocal events enhanced imitative, verbal and cognitive abilities in some ASD children, particularly those with low functioning  ...  Finally, we review the suspected underlying neurobiological mechanisms of MBD as evidenced in neuroimaging, genetic, environmental and epigenetic studies.  ...  on static visual stimuli that may explain enhanced local perception and weak central coherence, enhanced spatial memory and sometimes enhanced graphic abilities; overfocused attention on auditory singularities  ... 
doi:10.1016/j.neubiorev.2009.06.006 pmid:19559043 fatcat:6zeuh4eeqvd3jg4pdi3shgt43q

Neural Mechanisms of Visual Motion Anomalies in Autism: A Two-Decade Update and Novel Aetiology

Samuel Spiteri, David Crewther
2021 Frontiers in Neuroscience  
The 21st century has seen dramatic changes in our understanding of the visual physio-perceptual anomalies of autism and also in the structure and development of the primate visual system.  ...  We propose that autistic variation arises from a slowing in the normal developmental attenuation of the pulvinar → MT pathway.  ...  The presence of an enhanced monocular input may also explain the relative fragility and high incidence of strabismus in those with ASD.  ... 
doi:10.3389/fnins.2021.756841 pmid:34790092 pmcid:PMC8591069 fatcat:o2jx4dola5azbfvf2e7iggqgwq

Visual function in autism spectrum disorders: a critical review

Asmaa Bakroon, Vasudevan Lakshminarayanan
2016 Clinical and experimental optometry  
In particular, we review the impact of these dysfunctions on visual performance.  ...  Studies have shown considerable evidence of visual dysfunction in autism spectrum disorders.  ...  enhancement and visual perception in target-detecting tasks using dynamic and static search methods.  ... 
doi:10.1111/cxo.12383 pmid:27161596 fatcat:eh5u47q2ive27iin5idq7tnu6y

Developmental Dyslexia: Disorder or Specialization in Exploration?

Helen Taylor, Martin David Vestergaard
2022 Frontiers in Psychology  
Cultural change to support this system of collaborative search may therefore be essential in confronting the challenges humanity now faces.  ...  The existence of a system of collective cognitive search that emerges through collaboration would help to explain our species' exceptional adaptiveness.  ...  ACKNOWLEDGMENTS We would like to express our great appreciation to Professor Nigel Lockett, James Arbib, Mark Evans, Ian Hughes, Chris Tottman, and Anthony Hobley for their much needed support and help in  ... 
doi:10.3389/fpsyg.2022.889245 pmid:35814102 pmcid:PMC9263984 fatcat:v6sli7xg3jband22wd5oaylcnm

Autism Traits in Individuals with Agenesis of the Corpus Callosum

Yolanda C. Lau, Leighton B. N. Hinkley, Polina Bukshpun, Zoe A. Strominger, Mari L. J. Wakahiro, Simon Baron-Cohen, Carrie Allison, Bonnie Auyeung, Rita J. Jeremy, Srikantan S. Nagarajan, Elliott H. Sherr, Elysa J. Marco
2012 Journal of Autism and Developmental Disorders  
Interestingly, performance on the AQ's imagination domain was inversely correlated with magnetoencephalography measures of resting-state functional connectivity in the right superior temporal gyrus.  ...  We screened a large AgCC cohort (n = 106) with the Autism Spectrum Quotient (AQ) and found that 45 % of children, 35 % of adolescents, and 18 % of adults exceeded the predetermined autism-screening cut-off  ...  Some, but not all, first-degree relatives of autistic individuals display higher autistic traits than the general population.  ... 
doi:10.1007/s10803-012-1653-2 pmid:23054201 pmcid:PMC3625480 fatcat:bbghfjhucbgxjen3n2fcnfutdm

The study of autism as a distributed disorder

Ralph-Axel Müller
2007 Mental Retardation and Developmental Disabilities Research Reviews  
In this review, I argue that autism is a 'distributed disorder' on various levels of study (genetic, neuroanatomical, neurofunctional, behavioral). 'Localizing' models are therefore not promising.  ...  of the disorder, resulting in an 'exponentially distributed' profile.  ...  Acknowledgments This review was supported by the National Institutes of Health, grants R01-NS43999 and R01-DC6155.  ... 
doi:10.1002/mrdd.20141 pmid:17326118 pmcid:PMC3315379 fatcat:7pwiqj7ocvdp5l3t6zdwddm3oy

Electrophysiological and Behavioral Evidence for Hyper- and Hyposensitivity in Rare Genetic Syndromes Associated with Autism

Anastasia Neklyudova, Kirill Smirnov, Anna Rebreikina, Olga Martynova, Olga Sysoeva
2022 Genes  
Our study reviewed abnormalities in spontaneous, as well as event-related, brain activity in syndromes with a known genetic underpinning that are associated with autistic symptomatology.  ...  Excitation/inhibition imbalance related to GABAergic signaling, and the interplay of tonic and phasic inhibition in different brain regions might underlie this relationship.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/genes13040671 pmid:35456477 pmcid:PMC9027402 fatcat:jppweqsk35aolhnorzpuylnu7u
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