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https://www.readbyqxmd.com/read/28635378/people-with-autism-spectrum-conditions-make-more-consistent-decisions
#1
George D Farmer, Simon Baron-Cohen, William J Skylark
People with autism spectrum conditions (ASC) show reduced sensitivity to contextual stimuli in many perceptual and cognitive tasks. We investigated whether this also applies to decision making by examining adult participants' choices between pairs of consumer products that were presented with a third, less desirable "decoy" option. Participants' preferences between the items in a given pair frequently switched when the third item in the set was changed, but this tendency was reduced among individuals with ASC, which indicated that their choices were more consistent and conventionally rational than those of control participants...
June 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28632464/effects-of-video-modeling-with-video-feedback-on-vocational-skills-of-adults-with-autism-spectrum-disorder
#2
Derek L English, Sadhana Gounden, Richard E Dagher, Shu Fen Chan, Brett E Furlonger, Angelika Anderson, Dennis W Moore
OBJECTIVE: To examine the effectiveness of a video modeling (VM) with video feedback (VFB) intervention to teach vocational gardening skills to three adults with autism spectrum disorder (ASD). METHOD: A multiple probe design across skills was used to assess the effects of the intervention on the three participants' ability to perform skills accurately. RESULTS: The use of VM with VFB led to improvements across skills for two of the participants...
February 16, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28630815/acquisition-and-generalization-of-complex-empathetic-responses-among-children-with-autism
#3
Paul J Argott, Dawn Buffington Townsend, Claire L Poulson
Empathy can be defined as a social interaction skill that consists of four components: (1) a statement voiced in the (2) appropriate intonation, accompanied by a (3) facial expression and (4) gesture that correspond to the affect of another individual. A multiple-baseline across response categories experimental design was used to evaluate the effectiveness of a prompt sequence (video modeling, in vivo modeling, manual and verbal prompting) and reinforcement to increase the frequency of complex empathetic responding by four children with autism...
June 2017: Behavior Analysis in Practice
https://www.readbyqxmd.com/read/28629645/atypical-activation-of-action-semantic-network-in-adolescents-with-autism-spectrum-disorder
#4
Tracey A Knaus, Claire Burns, Jodi Kamps, Anne L Foundas
In typical adults, fMRI studies have shown activation of primary and pre-motor regions during action word processing. Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by social and communication impairments. ASD studies have shown atypical semantic processing and motor deficits. The objective of this study was to examine semantic processing of verbs in ASD. 15 ASD adolescents and 19 typically developing adolescents, 11-16years, completed a semantic similarity judgment task during fMRI...
June 16, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28627743/polygenic-scores-for-schizophrenia-and-educational-attainment-are-associated-with-behavioural-problems-in-early-childhood-in-the-general-population
#5
Philip R Jansen, Tinca J C Polderman, Koen Bolhuis, Jan van der Ende, Vincent W V Jaddoe, Frank C Verhulst, Tonya White, Danielle Posthuma, Henning Tiemeier
BACKGROUND: Genome-wide association studies in adults have identified numerous genetic variants related to psychiatric disorders and related traits, such as schizophrenia and educational attainment. However, the effects of these genetic variants on behaviour in the general population remain to be fully understood, particularly in younger populations. We investigated whether polygenic scores of five psychiatric disorders and educational attainment are related to emotional and behaviour problems during early childhood...
June 19, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28623167/the-ketogenic-diet-affects-the-social-behavior-of-young-male-rats
#6
Daniela Kasprowska-Liśkiewicz, Arkadiusz D Liśkiewicz, Marta M Nowacka-Chmielewska, Joanna Nowicka, Andrzej Małecki, Jarosław J Barski
The positive effects of the ketogenic diet (KD) on social behavior have been recently reported in patients and rodent models of autism spectrum disorder (ASD). Given the beneficial effects of the KD on epilepsy, mitochondrial function, carbohydrate metabolism, and inflammation, treatment based on the KD has the potential to reduce some of the ASD-associated symptoms, including abnormal social interactions. It is not known whether the KD influences sociability by reducing the pathological processes underlying ASD or through some independent mechanism...
June 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28622159/weeding-out-the-justification-for-marijuana-treatment-in-patients-with-developmental-and-behavioral-conditions
#7
Theodora Nelson, Yi Hui Liu, Kara S Bagot, Martin T Stein
Alex is a 13-year-old adolescent with high-functioning autism spectrum disorder, attention-deficit/hyperactivity disorder (ADHD)-combined type, anxiety, and depression. He has been resistant to engaging in therapy and treatment with various medications has been unsuccessful. Alex's parents are concerned about his anxiety, isolation, oppositional behaviors, academic underachievement, truancy, and substance use. A recent altercation with his stepfather led to a police intervention and a brief removal of Alex from the home...
June 15, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28620294/gestational-exposure-to-air-pollution-alters-cortical-volume-microglial-morphology-and-microglia-neuron-interactions-in-a-sex-specific-manner
#8
Jessica L Bolton, Steven Marinero, Tania Hassanzadeh, Divya Natesan, Dominic Le, Christine Belliveau, S N Mason, Richard L Auten, Staci D Bilbo
Microglia are the resident immune cells of the brain, important for normal neural development in addition to host defense in response to inflammatory stimuli. Air pollution is one of the most pervasive and harmful environmental toxicants in the modern world, and several large scale epidemiological studies have recently linked prenatal air pollution exposure with an increased risk of neurodevelopmental disorders such as autism spectrum disorder (ASD). Diesel exhaust particles (DEP) are a primary toxic component of air pollution, and markedly activate microglia in vitro and in vivo in adult rodents...
2017: Frontiers in Synaptic Neuroscience
https://www.readbyqxmd.com/read/28619530/neural-networks-underlying-language-and-social-cognition-during-self-other-processing-in-autism-spectrum-disorders
#9
Rajesh K Kana, Emma B Sartin, Carl Stevens, Hrishikesh D Deshpande, Christopher Klein, Mark R Klinger, Laura Grofer Klinger
The social communication impairments defining autism spectrum disorders (ASD) may be built upon core deficits in perspective-taking, language processing, and self-other representation. Self-referential processing entails the ability to incorporate self-awareness, self-judgment, and self-memory in information processing. Very few studies have examined the neural bases of integrating self-other representation and semantic processing in individuals with ASD. The main objective of this functional MRI study is to examine the role of language and social brain networks in self-other processing in young adults with ASD...
June 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28618077/generation-of-a-microglial-developmental-index-in-mice-and-in-humans-reveals-a-sex-difference-in-maturation-and-immune-reactivity
#10
Richa Hanamsagar, Mark D Alter, Carina S Block, Haley Sullivan, Jessica L Bolton, Staci D Bilbo
Evidence suggests many neurological disorders emerge when normal neurodevelopmental trajectories are disrupted, i.e., when circuits or cells do not reach their fully mature state. Microglia play a critical role in normal neurodevelopment and are hypothesized to contribute to brain disease. We used whole transcriptome profiling with Next Generation sequencing of purified developing microglia to identify a microglial developmental gene expression program involving thousands of genes whose expression levels change monotonically (up or down) across development...
June 15, 2017: Glia
https://www.readbyqxmd.com/read/28616150/pitch-perception-in-tone-language-speaking-adults-with-and-without-autism-spectrum-disorders
#11
Stella T T Cheng, Gary Y H Lam, Carol K S To
Enhanced low-level pitch perception has been universally reported in autism spectrum disorders (ASD). This study examined whether tone language speakers with ASD exhibit this advantage. The pitch perception skill of 20 Cantonese-speaking adults with ASD was compared with that of 20 neurotypical individuals. Participants discriminated pairs of real syllable, pseudo-syllable (syllables that do not conform the phonotactic rules or are accidental gaps), and non-speech (syllables with attenuated high-frequency segmental content) stimuli contrasting pitch levels...
May 2017: I-Perception
https://www.readbyqxmd.com/read/28616126/autistic-traits-affect-interpersonal-motor-coordination-by-modulating-strategic-use-of-role-based-behavior
#12
Arianna Curioni, Ilaria Minio-Paluello, Lucia Maria Sacheli, Matteo Candidi, Salvatore Maria Aglioti
BACKGROUND: Despite the fact that deficits in social communication and interaction are at the core of Autism Spectrum Conditions (ASC), no study has yet tested individuals on a continuum from neurotypical development to autism in an on-line, cooperative, joint action task. In our study, we aimed to assess whether the degree of autistic traits affects participants' ability to modulate their motor behavior while interacting in a Joint Grasping task and according to their given role. METHODS: Sixteen pairs of adult participants played a cooperative social interactive game in which they had to synchronize their reach-to-grasp movements...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28612411/deficits-in-temporal-processing-in-mice-prenatally-exposed-to-valproic-acid
#13
Julieta Acosta, Marcos A Campolongo, Christian Höcht, Amaicha M Depino, Diego A Golombek, Patricia V Agostino
Temporal processing in the seconds-to-minutes range, known as interval timing, is a crucial cognitive function that requires activation of cortico-striatal circuits via dopaminergic-glutamatergic pathways. In humans, both children and adults with autism spectrum disorders (ASD) present alterations in their estimation of time intervals. At present, there are no records of interval timing studies in animal models of ASD. Hence, the objective of the present work was to evaluate interval timing in a mouse model of prenatal exposure to valproic acid (VPA) - a treatment used to induce human-like autistic features in rodent models...
June 14, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28612373/reduced-reward-related-neural-response-to-mimicry-in-individuals-with-autism
#14
C-T Hsu, J Neufeld, B Chakrabarti
Mimicry is a facilitator of social bonds in humans, from infancy. This facilitation is made possible through changing the reward value of social stimuli, e.g. we like and affiliate more with people who mimic us. Autism Spectrum Disorders (ASD) are marked by difficulties in forming social bonds. In this study, we investigate whether the reward-related neural response to being mimicked is altered in individuals with ASD, using a simple conditioning paradigm. Multiple studies in humans and nonhuman primates have established a crucial role for the ventral striatal (VS) region in responding to rewards...
June 14, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28612245/correlates-of-police-involvement-among-adolescents-and-adults-with-autism-spectrum-disorder
#15
Ami Tint, Anna M Palucka, Elspeth Bradley, Jonathan A Weiss, Yona Lunsky
This study aimed to describe police interactions, satisfaction with police engagement, as well as examine correlates of police involvement among 284 adolescents and adults with autism spectrum disorder (ASD) followed over a 12- to 18-month period. Approximately 16% of individuals were reported to have some form of police involvement during the study period. Aggressive behaviors were the primary concern necessitating police involvement. Individuals with police involvement were more likely to be older, have a history of aggression, live outside the family home, and have parents with higher rates of caregiver strain and financial difficulty at baseline...
June 13, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28608419/empathic-responding-in-preschool-aged-children-with-familial-risk-for-autism
#16
Nicole M McDonald, Haley G Murphy, Daniel S Messinger
Individuals with autism spectrum disorder (ASD) show deficits in social and emotional reciprocity, which often include empathic responding. The younger siblings of children with ASD (high-risk siblings) are at elevated risk for ASD and for subclinical deficits in social-emotional functioning. Higher levels of empathy in high-risk siblings during the second and third years of life predict fewer ASD symptoms and likelihood of diagnosis. We conducted a multi-method investigation of empathic responding to an examiner's accident in 30 low-risk and 48 high-risk siblings with (n = 12) and without ASD outcomes (n = 36) at 4-6 years of age...
June 12, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28607173/tactile-defensiveness-and-impaired-adaptation-of-neuronal-activity-in-the-fmr1-knockout-mouse-model-of-autism
#17
Cynthia X He, Daniel A Cantu, Shilpa S Mantri, William A Zeiger, Anubhuti Goel, Carlos Portera-Cailliau
Sensory hypersensitivity is a common symptom in autism spectrum disorders (ASDs), including Fragile X Syndrome (FXS), and frequently leads to tactile defensiveness. In mouse models of ASDs, there is mounting evidence of neuronal and circuit hyperexcitability in several brain regions, which could contribute to sensory hypersensitivity. However, it is not yet known whether or how sensory stimulation might trigger abnormal sensory processing at the circuit level or abnormal behavioral responses in ASD mouse models, especially during an early developmental time when experience-dependent plasticity shapes such circuits...
June 12, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28602997/neural-mechanisms-underlying-valence-inferences-to-sound-the-role-of-the-right-angular-gyrus
#18
Fernando Bravo, Ian Cross, Sarah Hawkins, Nadia Gonzalez, Jorge Docampo, Claudio Bruno, Emmanuel Andreas Stamatakis
We frequently infer others' intentions based on non-verbal auditory cues. Although the brain underpinnings of social cognition have been extensively studied, no empirical work has yet examined the impact of musical structure manipulation on the neural processing of emotional valence during mental state inferences. We used a novel sound-based theory-of-mind paradigm in which participants categorized stimuli of different sensory dissonance level in terms of positive/negative valence. Whilst consistent with previous studies which propose facilitated encoding of consonances, our results demonstrated that distinct levels of consonance/dissonance elicited differential influences on the right angular gyrus, an area implicated in mental state attribution and attention reorienting processes...
June 8, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28602448/adaptation-of-social-and-non-social-cues-to-direction-in-adults-with-autism-spectrum-disorder-and-neurotypical-adults-with-autistic-traits
#19
Rebecca P Lawson, Jessica Aylward, Jonathan P Roiser, Geraint Rees
Perceptual constancy strongly relies on adaptive gain control mechanisms, which shift perception as a function of recent sensory history. Here we examined the extent to which individual differences in magnitude of adaptation aftereffects for social and non-social directional cues are related to autistic traits and sensory sensitivity in healthy participants (Experiment 1); and also whether adaptation for social and non-social directional cues is differentially impacted in adults with Autism Spectrum Disorder (ASD) relative to neurotypical (NT) controls (Experiment 2)...
May 17, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28599026/transition-issues-and-challenges-for-youth-with-autism-spectrum-disorders
#20
Fred R Volkmar, Scott L J Jackson, Logan Hart
Earlier detection and effective, evidence-based practices are gradually improving outcomes for people with autism spectrum disorder (ASD). Although some continue to need intensive support as adults, an increasing number are now going to college, becoming independent, and marrying. With the transition to adulthood, people with ASD will face a number of significant challenges. Health care providers who are knowledgeable about these challenges can help foster better outcomes and support those requiring higher levels of care...
June 1, 2017: Pediatric Annals
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