Elevated Thresholds for Light Touch in Children With Autism Reflect More Conservative Perceptual Decision-Making Rather Than a Sensory Deficit

Individuals with autism spectrum disorder (ASD) are often behaviorally hyper-reactive to light touch, but it is unclear to what degree this arises from a fundamental sensory difference vs. higher order systems for attention or emotion processing. Thus far, experimental findings for light touch detection are mixed, and few previous studies have independently considered sensitivity (the ability to discriminate signal from noise) and decision criterion (the overall response bias or tendency to answer “yes” or “no” in a detection task). We tested a large sample of children, adolescents, and adults with ASD (n = 88) and with neurotypical (NT) development (n = 59) using von Frey filaments to derive light touch thresholds at the palm. We calculated signal detection metrics for sensitivity (Az) and response criterion (c) from hit and false alarm rates. Both metrics exhibited significant group differences, such that the ASD group was less sensitive, but had a much more conservative response criterion. We used a best subset model selection procedure in three separate ordinal regressions for the whole group, adults, and children/adolescents. In all selected models, c was by far the most significant predictor of threshold, supplanting effects of diagnostic group that were significant in the baseline models. In contrast, Az was not a significant predictor of threshold in any of the models. Mean values of c were similar for adults with and without autism and for chi...
Source: Frontiers in Human Neuroscience - Category: Neuroscience Source Type: research

Related Links:

Publication date: Available online 30 May 2020Source: Brain, Behavior, and ImmunityAuthor(s): Chalystha Yie Qin Lee, Ashley E. Franks, Elisa L. Hill-Yardin
Source: Brain, Behavior, and Immunity - Category: Neurology Source Type: research
Publication date: August 2020Source: Research in Autism Spectrum Disorders, Volume 76Author(s): Phil Reed
Source: Research in Autism Spectrum Disorders - Category: Psychiatry Source Type: research
Publication date: August 2020Source: Research in Autism Spectrum Disorders, Volume 76Author(s): Sarah-Maude Coll, Nicholas E.V. Foster, Alexa Meilleur, Simona M. Brambati, Krista L. Hyde
Source: Research in Autism Spectrum Disorders - Category: Psychiatry Source Type: research
Publication date: August 2020Source: Research in Autism Spectrum Disorders, Volume 76Author(s): Susan M. Hayward, Keith R. McVilly, Mark A. Stokes
Source: Research in Autism Spectrum Disorders - Category: Psychiatry Source Type: research
Source: BMJ Comments - Category: General Medicine Source Type: forums
Authors: Hatila S, Solanki G PMID: 32470234 [PubMed - as supplied by publisher]
Source: The Primary Care Companion for CNS Disorders - Category: Primary Care Tags: Prim Care Companion CNS Disord Source Type: research
Publication date: September 2020Source: Research in Developmental Disabilities, Volume 104Author(s): K. Payne, K.L. Maras, A.J. Russell, M.J. Brosnan, R. Mills
Source: Research in Developmental Disabilities - Category: Disability Source Type: research
Publication date: September 2020Source: Research in Developmental Disabilities, Volume 104Author(s): Geraldine Leader, Maeve Murray, Páraic S. O’Súilleabháin, Leanne Maher, Katie Naughton, Sophia Arndt, Keeley White, Ivan Traina, Arlene Mannion
Source: Research in Developmental Disabilities - Category: Disability Source Type: research
Publication date: Available online 29 May 2020Source: Progress in Neuro-Psychopharmacology and Biological PsychiatryAuthor(s): Ziqi Wang, Jun Li, Tian Zhang, Tianlan Lu, Han Wang, Meixiang Jia, Jing Liu, Jun Xiong, Dai Zhang, Lifang Wang
Source: Progress in Neuro Psychopharmacology and Biological Psychiatry - Category: Psychiatry Source Type: research
Publication date: August 2020Source: Research in Autism Spectrum Disorders, Volume 76Author(s): Veronica P. Fleury, Pang Chaxiong
Source: Research in Autism Spectrum Disorders - Category: Psychiatry Source Type: research
More News: Autism | Brain | Child Development | Children | Neurology | Neuroscience | Study