scholarly journals Atypical interference effect of action observation in autism spectrum conditions

2013 ◽  
Vol 44 (4) ◽  
pp. 731-740 ◽  
Author(s):  
J. Cook ◽  
D. Swapp ◽  
X. Pan ◽  
N. Bianchi-Berthouze ◽  
S-J. Blakemore
Keyword(s):  
Virtual Reality ◽  
Interference Effect ◽  
Action Observation ◽  
Arm Movements ◽  
Autism Spectrum ◽  
Virtual Human ◽  
Autism Spectrum Conditions ◽  
Interference Effects ◽  
Action Execution ◽  
Biological Actions

BackgroundObserving incongruent actions interferes with ongoing action execution. This ‘interference effect’ is larger for observed biological actions than for non-biological actions. The current study used virtual reality to investigate the biological specificity of interference effects of action observation in autism spectrum conditions (ASC).MethodHigh-functioning adults with ASC and age- and IQ-matched healthy controls performed horizontal sinusoidal arm movements whilst observing arm movements conducted by a virtual reality agent with either human or robot form, which moved with either biological motion or at a constant velocity. In another condition, participants made the same arm movements while observing a real human. Observed arm movements were either congruent or incongruent with executed arm movements. An interference effect was calculated as the average variance in the incongruent action dimension during observation of incongruent compared with congruent movements.ResultsControl participants exhibited an interference effect when observing real human and virtual human agent incongruent movements but not when observing virtual robot agent movements. Individuals with ASC differed from controls in that they showed no interference effects for real human, virtual human or virtual robot movements.ConclusionsThe current study demonstrates atypical interference effects in ASC.

scholarly journals Using Functional Connectivity to Examine the Correlation between Mirror Neuron Network and Autistic Traits in a Typically Developing Sample: A fNIRS Study

2021 ◽  
Vol 11 (3) ◽  
pp. 397
Author(s):  
Thien Nguyen ◽  
Helga O. Miguel ◽  
Emma E. Condy ◽  
Soongho Park ◽  
Amir Gandjbakhche
Keyword(s):  
Functional Connectivity ◽  
Near Infrared ◽  
Action Observation ◽  
Pearson Correlation ◽  
Mirror Neuron ◽  
Autistic Traits ◽  
Autism Spectrum ◽  
Neuron Network ◽  
Action Execution ◽  
Functional Near Infrared Spectroscopy

Mirror neuron network (MNN) is associated with one’s ability to recognize and interpret others’ actions and emotions and has a crucial role in cognition, perception, and social interaction. MNN connectivity and its relation to social attributes, such as autistic traits have not been thoroughly examined. This study aimed to investigate functional connectivity in the MNN and assess relationship between MNN connectivity and subclinical autistic traits in neurotypical adults. Hemodynamic responses, including oxy- and deoxy-hemoglobin were measured in the central and parietal cortex of 30 healthy participants using a 24-channel functional Near-Infrared spectroscopy (fNIRS) system during a live action-observation and action-execution task. Functional connectivity was derived from oxy-hemoglobin data. Connections with significantly greater connectivity in both tasks were assigned to MNN connectivity. Correlation between connectivity and autistic traits were performed using Pearson correlation. Connections within the right precentral, right supramarginal, left inferior parietal, left postcentral, and between left supramarginal-left angular regions were identified as MNN connections. In addition, individuals with higher subclinical autistic traits present higher connectivity in both action-execution and action-observation conditions. Positive correlation between MNN connectivity and subclinical autistic traits can be used in future studies to investigate MNN in a developing population with autism spectrum disorder.

scholarly journals A Repertoire of Virtual-Reality, Occupational Therapy Exercises for Motor Rehabilitation Based on Action Observation

Data ◽  
2022 ◽  
Vol 7 (1) ◽  
pp. 9
Author(s):  
Emilia Scalona ◽  
Doriana De Marco ◽  
Maria Chiara Bazzini ◽  
Arturo Nuara ◽  
Adolfo Zilli ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Occupational Therapy ◽  
Injury Prevention ◽  
Graphical User Interface ◽  
Occupational Safety ◽  
Action Observation ◽  
Motor Rehabilitation ◽  
Action Execution ◽  
Motor Abilities ◽  
Custom Made

There is a growing interest in action observation treatment (AOT), i.e., a rehabilitative procedure combining action observation, motor imagery, and action execution to promote the recovery, maintenance, and acquisition of motor abilities. AOT studies employed basic upper limb gestures as stimuli, but—in principle—the AOT approach can be effectively extended to more complex actions like occupational gestures. Here, we present a repertoire of virtual-reality (VR) stimuli depicting occupational therapy exercises intended for AOT, potentially suitable for occupational safety and injury prevention. We animated a humanoid avatar by fitting the kinematics recorded by a healthy subject performing the exercises. All the stimuli are available via a custom-made graphical user interface, which allows the user to adjust several visualization parameters like the viewpoint, the number of repetitions, and the observed movement’s speed. Beyond providing clinicians with a set of VR stimuli promoting via AOT the recovery of goal-oriented, occupational gestures, such a repertoire could extend the use of AOT to the field of occupational safety and injury prevention.

Age of menarche in females with autism spectrum conditions

2006 ◽  
Vol 48 (12) ◽  
pp. 1007 ◽  
Author(s):  
Rebecca C Knickmeyer ◽  
Sally Wheelwright ◽  
Rosa Hoekstra ◽  
Simon Baron-Cohen
Keyword(s):  
Autism Spectrum ◽  
Autism Spectrum Conditions ◽  
Females With Autism ◽  
Age Of Menarche

Initial Evidence for Increased Weather Salience in Autism Spectrum Conditions

2018 ◽  
Author(s):  
Matthew J. Bolton ◽  
William G. Blumberg ◽  
Lara K. Ault ◽  
H. Michael Mogil ◽  
Stacie H. Hanes
Keyword(s):  
Cognitive Processing ◽  
Physical Disability ◽  
Autism Spectrum ◽  
Autism Spectrum Conditions ◽  
Weather Information ◽  
Autistic People ◽  
Neurological Functioning ◽  
Future Work ◽  
Logical Rules ◽  
Attention To Detail

Weather is important to all people, including vulnerable populations (those whose circumstances include cognitive processing, hearing, or vision differences, physical disability, homelessness, and other scenarios and factors). Autism spectrum conditions (ASC) affect information-processing and areas of neurological functioning that potentially inhibit the reception of hazardous weather information, and is of particular concern for weather messengers. People on the autism spectrum tend to score highly in tests of systemizing, a psychological process that heavily entails attention to detail and revolves around the creation of logical rules to explain things that occur in the world. This article reports the results of three preliminary studies examining weather salience–psychological attention to weather–and its potential relationships with systemizing in autistic people. Initial findings suggest that enhanced weather salience exists among autistic individuals compared to those without the condition, and that this may be related to systemizing. These findings reveal some possible strategies for communicating weather to autistic populations and motivate future work on a conceptual model that blends systemizing and chaos theory to better understand weather salience.

scholarly journals Application of Airy beam light sheet microscopy to examine early neurodevelopmental structures in 3D hiPSC-derived human cortical spheroids

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dwaipayan Adhya ◽  
George Chennell ◽  
James A. Crowe ◽  
Eva P. Valencia-Alarcón ◽  
James Seyforth ◽  
...  
Keyword(s):  
High Resolution ◽  
Human Brain ◽  
Light Sheet ◽  
Autism Spectrum ◽  
Model Systems ◽  
Large Field ◽  
Autism Spectrum Conditions ◽  
Patient Specific ◽  
Airy Beam

Abstract Background The inability to observe relevant biological processes in vivo significantly restricts human neurodevelopmental research. Advances in appropriate in vitro model systems, including patient-specific human brain organoids and human cortical spheroids (hCSs), offer a pragmatic solution to this issue. In particular, hCSs are an accessible method for generating homogenous organoids of dorsal telencephalic fate, which recapitulate key aspects of human corticogenesis, including the formation of neural rosettes—in vitro correlates of the neural tube. These neurogenic niches give rise to neural progenitors that subsequently differentiate into neurons. Studies differentiating induced pluripotent stem cells (hiPSCs) in 2D have linked atypical formation of neural rosettes with neurodevelopmental disorders such as autism spectrum conditions. Thus far, however, conventional methods of tissue preparation in this field limit the ability to image these structures in three-dimensions within intact hCS or other 3D preparations. To overcome this limitation, we have sought to optimise a methodological approach to process hCSs to maximise the utility of a novel Airy-beam light sheet microscope (ALSM) to acquire high resolution volumetric images of internal structures within hCS representative of early developmental time points. Results Conventional approaches to imaging hCS by confocal microscopy were limited in their ability to image effectively into intact spheroids. Conversely, volumetric acquisition by ALSM offered superior imaging through intact, non-clarified, in vitro tissues, in both speed and resolution when compared to conventional confocal imaging systems. Furthermore, optimised immunohistochemistry and optical clearing of hCSs afforded improved imaging at depth. This permitted visualization of the morphology of the inner lumen of neural rosettes. Conclusion We present an optimized methodology that takes advantage of an ALSM system that can rapidly image intact 3D brain organoids at high resolution while retaining a large field of view. This imaging modality can be applied to both non-cleared and cleared in vitro human brain spheroids derived from hiPSCs for precise examination of their internal 3D structures. This process represents a rapid, highly efficient method to examine and quantify in 3D the formation of key structures required for the coordination of neurodevelopmental processes in both health and disease states. We posit that this approach would facilitate investigation of human neurodevelopmental processes in vitro.

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