Distinct Autistic Traits Are Differentially Associated With the Width of the Multisensory Temporal Binding Window

2018 ◽  
Vol 31 (6) ◽  
pp. 523-536 ◽  
Author(s):  
Ayako Yaguchi ◽  
Souta Hidaka
Keyword(s):  
Neurodevelopmental Disorder ◽  
Continuous Distribution ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Audiovisual Integration ◽  
Autism Spectrum Quotient ◽  
Temporal Binding ◽  
Restricted Interests ◽  
Temporal Binding Window ◽  
And Behavior

Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social communication and interaction, and restricted interests and behavior patterns. These characteristics are considered as a continuous distribution in the general population. People with ASD show atypical temporal processing in multisensory integration. Regarding the flash–beep illusion, which refers to how a single flash can be illusorily perceived as multiple flashes when multiple auditory beeps are concurrently presented, some studies reported that people with ASD have a wider temporal binding window and greater integration than typically developed people; others found the opposite or inconsistent tendencies. Here, we investigated the relationships between the manner of the flash–beep illusion and the various dimensions of ASD traits by estimating the degree of typically developed participants’ ASD traits including five subscales using the Autism-Spectrum Quotient. We found that stronger ASD traits of communication and social skill were associated with a wider and narrower temporal binding window respectively. These results suggest that specific ASD traits are differently involved in the particular temporal binding processes of audiovisual integration.

scholarly journals The 2D : 4D Digit Ratio as a Biomarker for Autism Spectrum Disorder

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
M. Mackus ◽  
D. de Kruijff ◽  
L. S. Otten ◽  
A. D. Kraneveld ◽  
J. Garssen ◽  
...  
Keyword(s):  
Ring Finger ◽  
Autistic Traits ◽  
Subscale Score ◽  
Autism Spectrum ◽  
Digit Ratio ◽  
Autism Spectrum Quotient ◽  
Attention Switching ◽  
Left Hand ◽  
And Behavior ◽  
Attention To Detail

It has been suggested that the second (2D, index finger) to fourth (4D, ring finger) digit ratio, 2D : 4D, may be a biomarker for the risk of developing autism. The aim of the current study was to determine the usefulness of the 2D : 4D digit ratio as biomarker for autistic traits. N=401 healthy young volunteers participated in the study. For both hands, digit lengths were measured using digital Vernier calipers. In addition to demographics, the Autism Spectrum Quotient (AQ) questionnaire was completed, comprised of five subscales, assessing “social insights and behavior,” “attention switching,” “communication,” “imagination,” and “attention to detail.” Overall, no significant correlations were observed between the AQ total score, its subscales, and the 2D : 4D digit ratio. For women, the left hand 2D : 4D digit ratio correlated significantly with the subscale score “communication” (r=-0.142; p=0.036). For men, a significant positive correlation was found between the left 2D : 4D digit ratio and the total AQ score (r=0.157; p=0.042) and AQ subscale “attention switching” (r=0.182; p=0.017). In conclusion, gender specific associations between the 2D : 4D digit ratio and specific autism traits were observed, which were stronger in men than in women. Future studies should be conducted in patients that are formally diagnosed with autism.

Unique Relationships Between Autistic Traits and Visual, Auditory, and Tactile Sensory Thresholds in Typically Developing Adults

Perception ◽  
2020 ◽  
Vol 49 (4) ◽  
pp. 405-421
Author(s):  
Ayako Yaguchi ◽  
Souta Hidaka
Keyword(s):  
Sensory Processing ◽  
Detection Threshold ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Individual Variability ◽  
Sensory Thresholds ◽  
Typically Developing ◽  
Restricted Interests ◽  
Strong Focus ◽  
And Behavior

Autism spectrum disorder (ASD) refers to neurodevelopmental disorders characterized by symptoms such as social deficits and restricted interests and behavior. Several studies have investigated specific sensory processing in relation to ASD traits. However, findings appear to be inconsistent and inconclusive because of variation in ASD traits among participants and differences in the tasks adopted. In this study, we investigated relationships between sensory thresholds in visual, auditory, and tactile modalities and various ASD traits to account for individual variability of traits in typically developing adults using the same experimental tasks. We estimated detection and discrimination thresholds for brightness, sound pressure, and vibrotactile stimulus strength. We also estimated the degree of ASD traits in each participant with a questionnaire. We found that higher tactile detection and visual discrimination thresholds were related to ASD traits in difficulty of communication. A lower tactile discrimination threshold and higher visual detection threshold was also related to the ASD trait of strong focus of attention. These findings suggest the existence of unique relationships between particular low-level sensory processing and specific ASD traits, indicating that irregularities in sensory processing may underlie variation in ASD traits.

scholarly journals The role of the MTG in negative emotional processing in young adults with autistic traits: a fMRI task study

2019 ◽  
Author(s):  
Yaxu Yu ◽  
Xiaoqin Wang ◽  
Jamie Ward ◽  
Qiu Jiang
Keyword(s):  
Functional Connectivity ◽  
Emotional Processing ◽  
Negative Emotion ◽  
Neurodevelopmental Disorder ◽  
Emotion Processing ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Autism Spectrum Quotient ◽  
The Right ◽  
High Level

Abstract Individuals with autistic traits are those within the normal population who demonstrate social, communication, and cognitive impairments but who do not meet the clinical threshold for autism spectrum disorder (ASD). ASD is a pervasive neurodevelopmental disorder associated with deficits in high-level cognitive functions such as negative emotion processing and social cognitive processing, and people with autistic traits also have these impairments. Few previous studies have explored negative emotion processing in people with autistic traits using task-based functional magnetic resonance imaging (fMRI). In this study, we focused on the behaviors of a large sample (N=104) of Chinese individuals with different levels of autistic traits, who we tested using a popular questionnaire called the autism spectrum quotient (AQ). We then applied task fMRI to determine negative emotion processing and social cognition associated with differences in brain activation and functional connectivity. The results mainly showed significantly positive activation in the right middle temporal gyrus (MTG), and the right hippocampus gyrus (HG) in multiple regression analysis. More importantly, mediation analysis showed that the right MTG suppresses the relationship between AQ (total) score and negative emotional processing, showing that a higher autistic trait score in individuals leads to a smaller difference between the rating of negative images and the neutral images. Furthermore, generalized psychophysiological interaction analyses (gPPI) analysis also suggested that the right MTG shows significant functional connectivity (FC) with the left parahippocampal gyrus (PHG), suggesting that individuals with autistic traits have high level of spontaneous negative emotion. According to these findings, we assumed that the MTG might have a specific effect on processing negative emotion in individuals with autistic traits related to weaker to social emotion ability. The emotion perception mechanisms in the MTG region may be affected by atypical negative emotion processing in other brain regions such as HG and PHG, during a negative emotion processing task with socially emotion-relevant information in individuals with autistic traits.

Specialized Diet Therapies: Exploration for Improving Behavior in Autism Spectrum Disorder (ASD)

2020 ◽  
Vol 27 (40) ◽  
pp. 6771-6786
Author(s):  
Geir Bjørklund ◽  
Nagwa Abdel Meguid ◽  
Maryam Dadar ◽  
Lyudmila Pivina ◽  
Joanna Kałużna-Czaplińska ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Neurodevelopmental Disorder ◽  
Caloric Intake ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Nutritional Deficiencies ◽  
Childhood And Adolescence ◽  
Restricted Interests ◽  
Balanced Diet ◽  
The Individual

As a major neurodevelopmental disorder, Autism Spectrum Disorder (ASD) encompasses deficits in communication and repetitive and restricted interests or behaviors in childhood and adolescence. Its etiology may come from either a genetic, epigenetic, neurological, hormonal, or an environmental cause, generating pathways that often altogether play a synergistic role in the development of ASD pathogenesis. Furthermore, the metabolic origin of ASD should be important as well. A balanced diet consisting of the essential and special nutrients, alongside the recommended caloric intake, is highly recommended to promote growth and development that withstand the physiologic and behavioral challenges experienced by ASD children. In this review paper, we evaluated many studies that show a relationship between ASD and diet to develop a better understanding of the specific effects of the overall diet and the individual nutrients required for this population. This review will add a comprehensive update of knowledge in the field and shed light on the possible nutritional deficiencies, metabolic impairments (particularly in the gut microbiome), and malnutrition in individuals with ASD, which should be recognized in order to maintain the improved socio-behavioral habit and physical health.

scholarly journals Diachronic Tendency and Thinking Style Across the Broader Autism Spectrum: Sources of Individual Differences?

2021 ◽  
Author(s):  
Stian Orm ◽  
Ella Holt Holmberg ◽  
Paul L. Harris ◽  
Maria Nunez ◽  
Francisco Pons
Keyword(s):  
Autistic Traits ◽  
Broader Autism Phenotype ◽  
Autism Spectrum ◽  
Inner Speech ◽  
Autism Spectrum Quotient ◽  
Present Moment ◽  
Thinking Style ◽  
Mental Images ◽  
High School Degree ◽  
Future Events

Abstract Objectives First, to see whether previous studies showing a limited capacity to spontaneously evoke the past and the future of a present moment (diachronic tendency) and a prevalence of mental images over inner speech (thinking style) in individuals with autism spectrum disorder could be replicated in individuals belonging to the broader autism phenotype. Second, to test the hypothesis that individuals thinking with mental images have a more limited diachronic tendency compared with individuals thinking with inner speech. Methods Adults (N = 309, Mage = 31.5 years, 76% women) with at least a high school degree were assessed with the Autism Spectrum Quotient, a test of diachronic tendency comprising four pictures varying in social interactivity and dynamicity, and a thinking style scale comprising three items representing three different everyday situations. Results The results showed that adults with many autistic traits have a limited diachronic tendency but only when the situation is socially interactive and dynamic, think more in mental images than individuals with no or few autistic traits but nevertheless still think more with inner speech than with mental images, and the more the participants reported thinking in inner speech, the more they evoked past and future events when describing a socially interactive and dynamic situation. Conclusions More autistic traits are associated with a limited diachronic tendency in socially interactive and dynamic situations and more thinking in mental images, and thinking style could be one of the determinants of diachronic tendency in socially interactive and dynamic situations.

scholarly journals The Comprehensive Autistic Trait Inventory (CATI): development and validation of a new measure of autistic traits in the general population

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Michael C. W. English ◽  
Gilles E. Gignac ◽  
Troy A. W. Visser ◽  
Andrew J. O. Whitehouse ◽  
James T. Enns ◽  
...  
Keyword(s):  
Factor Analysis ◽  
General Population ◽  
Measurement Invariance ◽  
High Reliability ◽  
Predictive Ability ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Autism Spectrum Quotient ◽  
Sensory Sensitivity ◽  
Wide Range

Abstract Background Traits and characteristics qualitatively similar to those seen in diagnosed autism spectrum disorder can be found to varying degrees in the general population. To measure these traits and facilitate their use in autism research, several questionnaires have been developed that provide broad measures of autistic traits [e.g. Autism-Spectrum Quotient (AQ), Broad Autism Phenotype Questionnaire (BAPQ)]. However, since their development, our understanding of autism has grown considerably, and it is arguable that existing measures do not provide an ideal representation of the trait dimensions currently associated with autism. Our aim was to create a new measure of autistic traits that reflects our current understanding of autism, the Comprehensive Autism Trait Inventory (CATI). Methods In Study 1, 107 pilot items were administered to 1119 individuals in the general population and exploratory factor analysis of responses used to create the 42-item CATI comprising six subscales: Social Interactions, Communication, Social Camouflage, Repetitive Behaviours, Cognitive Rigidity, and Sensory Sensitivity. In Study 2, the CATI was administered to 1068 new individuals and confirmatory factor analysis used to verify the factor structure. The AQ and BAPQ were administered to validate the CATI, and additional autistic participants were recruited to compare the predictive ability of the measures. In Study 3, to validate the CATI subscales, the CATI was administered to 195 new individuals along with existing valid measures qualitatively similar to each CATI subscale. Results The CATI showed convergent validity at both the total-scale (r ≥ .79) and subscale level (r ≥ .68). The CATI also showed superior internal reliability for total-scale scores (α = .95) relative to the AQ (α = .90) and BAPQ (α = .94), consistently high reliability for subscales (α > .81), greater predictive ability for classifying autism (Youden’s Index = .62 vs .56–.59), and demonstrated measurement invariance for sex. Limitations Analyses of predictive ability for classifying autism depended upon self-reported diagnosis or identification of autism. The autistic sample was not large enough to test measurement invariance of autism diagnosis. Conclusions The CATI is a reliable and economical new measure that provides observations across a wide range of trait dimensions associated with autism, potentially precluding the need to administer multiple measures, and to our knowledge, the CATI is also the first broad measure of autistic traits to have dedicated subscales for social camouflage and sensory sensitivity.

scholarly journals Longitudinal association between autistic traits and affinity for hikikomori in Japanese university students

2021 ◽  
Author(s):  
Yuuki Shimono ◽  
Akira Hasegawa ◽  
Kohei Tsuchihara ◽  
Keisuke Tanaka ◽  
Yuko Matsuda ◽  
...  
Keyword(s):  
Social Interaction ◽  
University Students ◽  
Structural Equation ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Equation Modeling ◽  
Autism Spectrum Quotient ◽  
Japanese University ◽  
Longitudinal Association ◽  
Academic Failures

AbstractThe affinity for hikikomori represents the desire to be withdrawn, as well as to entertain an empathetic attitude towards withdrawn individuals. It is composed of two subdimensions, the maladaptive desire for hikikomori, and empathy for others with hikikomori. This longitudinal study examined whether autistic traits predicted the affinity for hikikomori. At the baseline assessment, undergraduate and graduate students in Japan (N = 272) completed the Autism-Spectrum Quotient (AQ), the Affinity for Hikikomori Scale in University Students, and measures assessing academic failures and interpersonal conflicts. They also completed all measures excluding the AQ eight weeks later. Structural equation modeling indicated that difficulties in social interaction aspects of autistic traits were positively associated with academic failures at Time 2 even after controlling for academic failures at Time 1. In addition, difficulties in social interaction were positively related to the desire for hikikomori at Time 2 indirectly via academic failures at Time 2 after controlling for the desire for hikikomori at Time 1. Difficulties in social interaction were also directly associated with the increased desire for hikikomori at Time 2. These findings suggest that autistic traits, and especially difficulties in social interaction, are predictors of the maladaptive aspect of the affinity for hikikomori.

scholarly journals Prevalence of autism spectrum disorder and autistic traits in children with anorexia nervosa and avoidant/restrictive food intake disorder

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Takeshi Inoue ◽  
Ryoko Otani ◽  
Toshiyuki Iguchi ◽  
Ryuta Ishii ◽  
Soh Uchida ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Anorexia Nervosa ◽  
Food Intake ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Eating Attitudes ◽  
Spectrum Disorder ◽  
Autism Spectrum Quotient ◽  
Multicenter Cohort Study ◽  
Feeding And Eating Disorders

Abstract Background Autism spectrum disorder (ASD) and feeding and eating disorders (FEDs) such as anorexia nervosa (AN) are strongly linked as evidenced by frequent comorbidity and overlapping traits. However, eating and social behaviors are shaped by culture, so it is critical to examine these associations in different populations. Moreover, FEDs are heterogeneous, and there has been no examination of autistic traits in avoidant/restrictive food intake disorder (ARFID). Methods Therefore, we investigated the prevalence of ASD and autistic traits among Japanese children with AN (n = 92) or ARFID (n = 32) from a prospective multicenter cohort study using the Autism Spectrum Quotient Children’s version (AQC) and Children’s Eating Attitudes Test (ChEAT26). Results ASD prevalence was high in both AN and ARFID (16.3 and 12.5%, respectively). The AN group exhibited significantly higher scores on all AQC subscales than an age-matched healthy control (HC) group, but there were no significant correlations between AQC scores and ChEAT26 scores. In the AFRID group, AQC scores did not differ from HCs, but significant correlations were found between total AQC and ChEAT26 scores and between several AQC and ChEAT26 subscales. Conclusions Both the AN and ARFID groups had high prevalence rates of ASD. The AN group showed a significantly higher degree of autistic traits than the HC group; however, no difference was found between the ARFID and HC groups. Clinicians need to be aware of these rates when working with children with ED.

scholarly journals Patterns of Contagious Yawning and Itching Differ Amongst Adults With Autistic Traits vs. Psychopathic Traits

2021 ◽  
Vol 12 ◽  
Author(s):  
Molly S. Helt ◽  
Taylor M. Sorensen ◽  
Rachel J. Scheub ◽  
Mira B. Nakhle ◽  
Anna C. Luddy
Keyword(s):  
Eye Gaze ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Psychopathic Traits ◽  
Reactivity Index ◽  
Autism Spectrum Quotient ◽  
Contagious Yawning ◽  
Different Types ◽  
The Relationship ◽  
Underlying Processes

Both individuals with diagnosed with Autism Spectrum Disorder (ASD) and individuals high in psychopathic traits show reduced susceptibility to contagious yawning; that is, yawning after seeing or hearing another person yawn. Yet it is unclear whether the same underlying processes (e.g., reduced eye gaze) are responsible for the relationship between reduced contagion and these very different types of clinical traits. College Students (n = 97) watched videos of individuals yawning or scratching (a form of contagion not reliant on eye gaze for transmission) while their eye movements were tracked. They completed the Interpersonal Reactivity Index (IRI), the Autism-Spectrum Quotient (AQ), the Psychopathy Personality Inventory-Revised (PPI-R), and the Adolescent and Adult Sensory Processing Disorder Checklist. Both psychopathic traits and autistic traits showed an inverse relationship to contagious yawning, consistent with previous research. However, the relationship between autistic (but not psychopathic) traits and contagious yawning was moderated by eye gaze. Furthermore, participants high in autistic traits showed typical levels of contagious itching whereas adults high in psychopathic traits showed diminished itch contagion. Finally, only psychopathic traits were associated with lower overall levels of empathy. The findings imply that the underlying processes contributing to the disruptions in contagious yawning amongst individuals high in autistic vs. psychopathic traits are distinct. In contrast to adults high in psychopathic traits, diminished contagion may appear amongst people with high levels of autistic traits secondary to diminished attention to the faces of others, and in the absence of a background deficit in emotional empathy.

scholarly journals Complete Dental Management of an Autism and Intellectual Disability Patient under General Anaesthesia: A Case Report

2021 ◽  
Vol 55 (8) ◽  
Author(s):  
Karin Nadia Firsty ◽  
Nailur Rahmy Wahdany ◽  
Dian Lupita Sari ◽  
Yesri Sasmita Purba ◽  
Tania Saskianti ◽  
...  
Keyword(s):  
Intellectual Disability ◽  
General Anaesthesia ◽  
Neurodevelopmental Disorder ◽  
Autism Spectrum ◽  
Recurrent Pain ◽  
Restricted Interests ◽  
Posterior Teeth ◽  
Dental Management ◽  
Left Posterior ◽  
Patient Cooperation

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterized by persistent deficits in social communication and the presence of restricted interests and repetitive behaviours. Comorbidities following ASD, such as seizure, intellectual disability, and sensory impairment worsen patients’ ability to care for themselves. We present the case of a 22-year-old man with autism, intellectual disability and visual impairment who had recurrent pain in his upper and lower left posterior teeth that had cavities. On the first visit, the patient was observed and had panoramic x-ray. Clinical examination could not be done properly due to lack of patient cooperation. Restoration, pulp capping, tooth extraction, and odontectomy were planned under general anaesthesia.

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