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A Familiarization Protocol Facilitates the Participation of Children with ASD in Electrophysiological Research
Published on: July 31, 2017
Postural and Muscular Responses to a Novel Multisensory Relaxation System in Children with Autism Spectrum Disorder:
Laura Zaliene1, Daiva Mockeviciene1, Eugenijus Macerauskas2,3,4
1Department of Holistic Medicine and Rehabilitation, Faculty of Health Science, Klaipeda University, LT-92294 Klaipėda, Lithuania.
Insights
A smart multisensory relaxation system was safe and feasible for children with severe autism spectrum disorder (ASD). The system provided physiological calmness without increasing muscle tension, suggesting potential as a therapeutic adjunct.
Area of Science:
- Neuroscience
- Developmental Psychology
- Rehabilitation Engineering
Background:
- Children with autism spectrum disorder (ASD) often exhibit postural abnormalities and increased muscle tone, impacting daily activities.
- Limited evidence exists on the immediate physiological effects of standardized multisensory environments for children with ASD.
Purpose of the Study:
- To assess the feasibility, safety, and short-term physiological and postural responses to an automated multisensory smart relaxation system.
- To evaluate the system's impact on children with severe ASD.
Main Methods:
- A single-session pilot study involving 30 children (ages 6-16) with severe ASD across three sites.
- Measurements included pre-post postural observation and surface electromyography (EMG) of key muscle groups.
- The system delivered controlled sound, vibration, and mild heat, with EMG normalized to a baseline.
Main Results:
- The intervention was well-tolerated, with no adverse events reported.
- Most children could sit independently and stand unaided post-session.
- EMG data indicated physiological calmness, with no significant pre-post changes or muscle co-contraction.
Conclusions:
- A single session using the smart multisensory relaxation system was safe, feasible, and physiologically calming for children with severe ASD.
- The system did not increase postural or muscular tension.
- Further multi-session trials with behavioral outcomes are recommended.
Background:
Children with autism spectrum disorder (ASD) frequently show postural abnormalities and elevated muscle tone, which can hinder participation in education and rehabilitation. Evidence on the immediate physiological effects of standardized multisensory environments is limited.
Objective:
To evaluate feasibility, safety and short-term physiological/postural responses to an automated multisensory smart relaxation system in children with severe ASD.
Methods:
In a single-session pilot across three sites, 30 children (27 boys; 6-16 years) underwent pre-post postural observation and bilateral surface EMG of the upper trapezius, biceps brachii and rectus abdominis. The system delivered parameterized sound, vibration, and mild heat. EMG was normalized to a quiet-sitting baseline.
Results:
The intervention was well tolerated with no adverse events. Most children sat independently (25/30; 80%) and a majority stood up unaided after the session (24/30; 76.9%). Postural profiles reflected common ASD features (neutral trunk 76%, forward head 52%, rounded/protracted shoulders 46%), while limb behavior was predominantly calm (73%). Normalized EMG amplitudes were low, with no significant pre-post changes and no meaningful left-right asymmetries (all p > 0.05; Cohen's d < 0.20), indicating physiological calmness rather than tonic co-contraction.
Conclusions:
A single session with a smart multisensory relaxation system was safe, feasible, and physiologically calming for children with severe ASD, without increasing postural or muscular tension. The platform's standardization and objective monitoring support its potential as a short-term calming adjunct before therapy or classroom tasks. Larger, gender-balanced, multi-session trials with behavioral outcomes are warranted.
