Applications of Magnetoencephalography to Autism Spectrum Disorder

2020 ◽  
pp. 317-346
Author(s):  
Kristina Safar ◽  
Margot J. Taylor ◽  
Junko Matsuzaki ◽  
Timothy P. L. Roberts
Keyword(s):  
Autism Spectrum Disorder ◽  
Face Processing ◽  
Autism Spectrum ◽  
Gamma Band ◽  
Spectrum Disorder ◽  
Social Impairment ◽  
Oscillatory Activity ◽  
Sensory Sensitivity ◽  
Neural Signals ◽  
Auditory Responses

Magnetoencephalography (MEG) has a unique combination of attributes allowing the probing of brain function, with resolution of space, time, and spectral content. These attributes lend themselves to the study of disorders characterized by no conspicuous structural brain anomalies, but rather anomalies of neural signals and communication. This chapter reviews the use of diverse MEG techniques and paradigms to study one such disorder, autism spectrum disorder (ASD). The authors focus on MEG as a probe of auditory and face processing anomalies in ASD. Impairments in auditory processing in ASD have been identified as objective markers of language and communication ability, general cognitive ability, and abnormal sensory sensitivity. Most MEG studies have observed that atypical auditory responses such as components of the early auditory evoked field (i.e., M50, M100), mismatch fields, or gamma-band oscillatory activity occur in individuals with ASD compared with typically developing children. Maturational trajectories of such measures also deviate from neurotypical patterns. Similarly, impairments in face perception are characteristic of ASD and have been a large focus of MEG studies, as a model probe for the social impairment phenotype. MEG research has demonstrated atypical source localization of activity during face processing in children through adults as well as in executive functions, including working memory and inhibition. Interregional differences in synchrony of neural oscillations have been elaborated by MEG in emotional face processing tasks, with visual perceptual processing underscoring gamma-band atypicalities in ASD. We highlight MEG as a promising approach for establishing clinical biomarkers of ASD and informing mechanistic neuroscience.

scholarly journals Sensory Processing and Aggressive Behavior in Adults with Autism Spectrum Disorder

2021 ◽  
Vol 11 (1) ◽  
pp. 95
Author(s):  
Frank van den Boogert ◽  
Bram Sizoo ◽  
Pascalle Spaan ◽  
Sharon Tolstra ◽  
Yvonne H. A. Bouman ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Aggressive Behavior ◽  
Sensory Processing ◽  
Short Form ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Sensory Profile ◽  
Sensory Sensitivity ◽  
Aggression Questionnaire ◽  
Adults With Asd

Autism spectrum disorder (ASD) may be accompanied by aggressive behavior and is associated with sensory processing difficulties. The present study aims to investigate the direct association between sensory processing and aggressive behavior in adults with ASD. A total of 101 Dutch adult participants with ASD, treated in outpatient or inpatient facilities, completed the Adolescent/Adult Sensory Profile (AASP), the Reactive-Proactive Aggression Questionnaire (RPQ), and the Aggression Questionnaire—Short Form (AQ-SF). Results revealed that sensory processing difficulties are associated with more aggressive behavior (f2=0.25), more proactive (f2=0.19) and reactive aggression (f2=0.27), more physical (f2=0.08) and verbal aggression (f2=0.13), and more anger (f2=0.20) and hostility (f2=0.12). Evidence was found for an interaction of the neurological threshold and behavioral response on total aggression and hostility. Participants with higher scores in comparison to the norm group in sensory sensitivity had the highest risk of aggressive behavior. In conclusion, clinical practice may benefit from applying detailed diagnostics on sensory processing difficulties when treating aggressive behavior in adults with ASD.

scholarly journals Early differences in auditory processing relate to Autism Spectrum Disorder traits in infants with Neurofibromatosis Type I

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Jannath Begum-Ali ◽  
◽  
Anna Kolesnik-Taylor ◽  
Isabel Quiroz ◽  
Luke Mason ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Auditory Processing ◽  
Neurofibromatosis Type ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Type I ◽  
Sensory Reactivity ◽  
Auditory Responses ◽  
Repetition Suppression ◽  
Age Related

Abstract Background Sensory modulation difficulties are common in children with conditions such as Autism Spectrum Disorder (ASD) and could contribute to other social and non-social symptoms. Positing a causal role for sensory processing differences requires observing atypical sensory reactivity prior to the emergence of other symptoms, which can be achieved through prospective studies. Methods In this longitudinal study, we examined auditory repetition suppression and change detection at 5 and 10 months in infants with and without Neurofibromatosis Type 1 (NF1), a condition associated with higher likelihood of developing ASD. Results In typically developing infants, suppression to vowel repetition and enhanced responses to vowel/pitch change decreased with age over posterior regions, becoming more frontally specific; age-related change was diminished in the NF1 group. Whilst both groups detected changes in vowel and pitch, the NF1 group were largely slower to show a differentiated neural response. Auditory responses did not relate to later language, but were related to later ASD traits. Conclusions These findings represent the first demonstration of atypical brain responses to sounds in infants with NF1 and suggest they may relate to the likelihood of later ASD.

Dysfunction in interpersonal neural synchronization as a mechanism for social impairment in autism spectrum disorder

2021 ◽  
Author(s):  
Laura E. Quiñones‐Camacho ◽  
Frank A. Fishburn ◽  
Katherine Belardi ◽  
Diane L. Williams ◽  
Theodore J. Huppert ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Social Impairment ◽  
Neural Synchronization

scholarly journals Sensory Sensitivity and Food Selectivity in Children with Autism Spectrum Disorder

2017 ◽  
Vol 48 (2) ◽  
pp. 583-591 ◽  
Author(s):  
Liem T. Chistol ◽  
Linda G. Bandini ◽  
Aviva Must ◽  
Sarah Phillips ◽  
Sharon A. Cermak ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Food Selectivity ◽  
Spectrum Disorder ◽  
Sensory Sensitivity

Assessment and Diagnosis of Autism Spectrum Disorder

2018 ◽  
Author(s):  
Michael Ellis
Keyword(s):  
Autism Spectrum Disorder ◽  
Primary Care Physicians ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Social Impairment ◽  
Autism Symptoms ◽  
Full Spectrum ◽  
Mixed Emotions ◽  
Difficult Time ◽  
Assessment And Diagnosis

The assessment and diagnosis phase of autism spectrum disorder (ASD) is a very difficult time for the parent. You will likely feel completely bewildered. You will be filled with many mixed emotions such as love for your child and fear for your child’s future. You may feel like your heart is breaking. But I can tell you, you are going to make it through this—just like I have. You will likely have to overcome significant denial to even discuss the unusual signs or symptoms that you have noticed in your young child. You may be afraid to hear the term “autism” come from your pediatrician’s mouth. However, you are about to start a very important journey with your child. You have to be strong in order to obtain for your child vital treatments and therapies that can dramatically improve your child’s life and future. Theoretically, ASD is not difficult to recognize and diagnose. However, in practice, it can be challenging. The full spectrum of symptoms included in ASD is quite wide. One child may appear quite typical with only minor eccentricities while another has significant intellectual disability, social impairment, self-injurious behavior, and aggression. No two individuals with ASD are exactly alike. In fact, individuals with autism are often more different than similar. We cannot easily pigeonhole or stereotype our children. Further complicating diagnosis, professionals often have little training in ASD, even in fields that have autism within their scope of practice. Furthermore, children with more subtle ASD symptoms or those who are “high-functioning” (more verbal and with more capabilities in general) do not always have symptoms that are evident at a very young age. At times, autism symptoms may not be identifiable until social problems become more significant as the child grows older. Primary care physicians are not typically able to spend long enough with your child during visits to pick up on the sometimes subtle signs needed to alert them to a possible ASD diagnosis.

scholarly journals 2288 Neural correlates of face processing in autism spectrum disorder: A quantitative meta-analysis of current literature and future directions

2018 ◽  
Vol 2 (S1) ◽  
pp. 21-22
Author(s):  
Carla J. Ammons ◽  
Mary-Elizabeth Winslett ◽  
Rajesh K. Kana
Keyword(s):  
Autism Spectrum Disorder ◽  
Face Processing ◽  
Repetitive Behavior ◽  
Autism Spectrum ◽  
Small Sample ◽  
Spectrum Disorder ◽  
Future Research ◽  
Healthy Controls ◽  
Specific Level

OBJECTIVES/SPECIFIC AIMS: Autism spectrum disorder (ASD) affects 1 in 68 people and includes restricted, repetitive behavior, and social communication deficits. Aspects of face processing (i.e., identity, emotion perception) are impaired in some with ASD. Neuroimaging studies have shown aberrant patterns of brain activation and connectivity of face processing regions. However, small sample sizes and inconsistent results have hindered clinical utility of these findings. The study aims to establish consistent patterns of brain responses to faces in ASD and provide directions for future research. METHODS/STUDY POPULATION: Neuroimaging studies were identified through a multi-database search according to PRISMA guidelines. In total, 23 studies were retained for a sample size of 383 healthy controls and 345 ASD. Peak coordinates were extracted for activation likelihood estimation (ALE) in GingerALE v2.3.6. Follow-up ALE analyses investigated directed Versus undirected gaze, static Versus dynamic, emotional Versus neutral, and familiar Versus unfamiliar faces. RESULTS/ANTICIPATED RESULTS: Faces produced bilateral activation of the fusiform gyrus (FG) in healthy controls (−42 −52 −20; 22 −74 −12, p<0.05, FDR) and left FG activation in ASD (−42 −54 −16, p<0.05, FDR). Activation in both groups was lateral to the mid-fusiform sulcus. Follow-up results pending. DISCUSSION/SIGNIFICANCE OF IMPACT: Reduced right FG activation to faces may inform biomarker or response to intervention studies. Mid-fusiform sulcus proved a reliable predictor of functional divides should be investigated on a subject-specific level.

scholarly journals C-65 Transdiagnostic Factors of Social Impairment in Comorbid Autism Spectrum Disorder and Attention Deficit Hyperactivity Disorder

2019 ◽  
Vol 34 (6) ◽  
pp. 1094-1094
Author(s):  
A Garagozzo ◽  
L Katz ◽  
M Scott ◽  
S Hunter
Keyword(s):  
Autism Spectrum Disorder ◽  
Motor Skills ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Motor Dysfunction ◽  
Social Impairment ◽  
Motor Deficits ◽  
Social Deficits ◽  
Functional Communication ◽  
Children With Adhd

Abstract Objective Comorbid Autism Spectrum Disorder (ASD) and ADHD are associated with greater symptom severity, including social impairment. Furthering work by Lerner, Pothoff, and Hunter (2015), we sought to identify unique and shared factors that contribute to parent-reported social deficits in children with ADHD, ASD, and ADHD+ASD. We hypothesized attention, hyperactivity, and motor skills would predict social deficits in ADHD, while functional communication and motor skills would predict social deficits in ASD; and additively, all factors would predict social deficits in ADHD+ASD. Method Utilizing a clinical database, we identified 236 participants (4-21 years; Mage = 10.6; 71% male; 28% African American; FSIQ M = 94.31) with diagnoses of ADHD, ASD, and ADHD+ASD. We examined FSIQ from the WISC-4/5, WPPSI-3, or DAS-2, motor skills and social impairment from the SIB-R and attention, hyperactivity, and functional communication from the BASC-2/3. Results Using hierarchical linear regression and controlling for FSIQ, hypotheses were partially supported. FSIQ was controlled for in each group. For ADHD, hyperactivity, functional communication, and motor skills contributed significantly to the model (p < .001), while for ASD, motor skills contributed significantly to the model (p < .001). For ASD + ADHD, functional communication and motor skills contributed significantly to the model (p < .001) Conclusion Results support previous findings that motor deficits and functional communication are associated with social impairment in children with ADHD and ASD, independently and comorbidly. This suggests that targeting motor dysfunction and functional communication concurrently may be effective for improving social interaction skills in children with ADHD +ASD.

Evidence-based treatment and conceptualization of autism spectrum disorder: Emotion regulation, social impairment, and anxiety as targets

2019 ◽  
Vol 83 (3) ◽  
pp. 199-204 ◽  
Author(s):  
Michelle A. Patriquin
Keyword(s):  
Autism Spectrum Disorder ◽  
Emotion Regulation ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Social Impairment ◽  
Evidence Based ◽  
Positive Outcomes ◽  
Evidence Based Treatment ◽  
Evidence Based Treatments ◽  
Adults With Asd

The goal of this special issue is to highlight innovative evidence-based treatments and conceptualizations of emotion regulation difficulties, social impairment, and anxiety in autism spectrum disorder (ASD). The issue is organized into these three highly linked constructs. Targeting these constructs effectively will help to ensure positive outcomes for youth and adults with ASD. It is clear that continued research is needed that creatively addresses emotion regulation problems, social impairment, and anxiety in ASD.

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