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Related Concept Videos

Autism Spectrum Disorder01:19

Autism Spectrum Disorder

Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Hearing01:31

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
Auditory Pathway01:15

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...

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Related Experiment Video

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Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
09:13

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder

Published on: April 22, 2015

Auditory temporal-envelope processing in high-functioning children with Autism Spectrum Disorder.

José Ignacio Alcántara1, Thomas E Cope, Wei Cope

  • 1Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom. jia10@cam.ac.uk

Neuropsychologia
|February 22, 2012
PubMed
Summary
This summary is machine-generated.

Children with Autism Spectrum Disorder (ASD) show impaired auditory temporal-envelope processing, struggling more than controls to understand speech in noisy environments. This reduced processing efficiency impacts their ability to discern temporal modulations.

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Area of Science:

  • Auditory Neuroscience
  • Neurodevelopmental Disorders

Background:

  • Individuals with Autism Spectrum Disorder (ASD) exhibit deficits in speech perception within noisy environments.
  • Previous research suggests potential difficulties in processing auditory temporal information.

Purpose of the Study:

  • To investigate if impaired auditory temporal-envelope processing underlies speech perception difficulties in children with ASD.
  • To quantify auditory temporal processing capabilities in high-functioning children with ASD compared to neurotypical controls.

Main Methods:

  • Measured temporal modulation transfer functions (TMTFs) in 6 high-functioning children with ASD and 6 controls.
  • Used sinusoidal amplitude modulation of broadband noise to assess modulation-depth thresholds across various rates.
  • Administered intensity increment-detection tasks to a subset of participants.

Main Results:

  • The ASD group exhibited significantly higher modulation-depth thresholds, especially at low modulation rates, indicating poorer temporal-envelope resolution.
  • Temporal-envelope resolution and processing efficiency were significantly reduced in children with ASD.
  • No significant differences were found in intensity increment-detection thresholds between groups.

Conclusions:

  • Findings suggest that reduced auditory temporal-envelope processing efficiency is a contributing factor to speech-in-noise difficulties in individuals with ASD.
  • These results highlight potential neural mechanisms underlying auditory processing differences in ASD.