A simple method for measuring brain asymmetry in children: application to autism

Area of Science:

• Neuropsychology
• Cognitive Neuroscience
• Developmental Psychology

Background:

• Assessing interhemispheric communication is crucial for understanding brain function.
• Autism Spectrum Disorder (ASD) is associated with atypical brain development and connectivity.
• Quantifying brain asymmetry in tactile processing can offer insights into neurodevelopmental differences.

Purpose of the Study:

• To introduce a novel device for measuring signal transfer between and within brain hemispheres.
• To investigate brain asymmetry in tactile processing in autistic children compared to neurotypical controls.

Main Methods:

• Development of a dual-panel device enabling tactile stimulation and recording motor responses.
• Utilizing the device for finger tapping tests and unilateral/bilateral tactile stimulation tasks.
• Comparing response times and processing efficiency between hemispheres in autistic children and controls.

Main Results:

• The developed device was well-accepted by all participants, including children with autism, who perceived it as a game.
• Autistic children exhibited significantly greater brain asymmetry in tactile processing compared to control participants.
• The right cerebral hemisphere demonstrated faster processing of tactile stimuli than the left hemisphere in autistic children.

Conclusions:

• The novel device is effective for assessing hemispheric communication and asymmetry in tactile processing.
• Findings suggest a distinct pattern of brain asymmetry in autistic children, with enhanced right-hemisphere speed for tactile tasks.
• This research contributes to understanding the neural underpinnings of sensory processing differences in autism.