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Auditory and visual information in speech perception: A developmental perspective.

Riki Taitelbaum-Swead1,2, Leah Fostick1

  • 1a Department of Communication Disorders , Ariel University , Ariel , Israel.

Clinical Linguistics & Phonetics
|April 1, 2016
PubMed
Summary
This summary is machine-generated.

Audiovisual speech perception shows an inverse U-shape development across the lifespan, with challenges for young children and older adults. This impacts hearing rehabilitation strategies.

Keywords:
Audiovisual integrationaudiovisual perceptionchildrendevelopmental speech perceptionolder adultsspeech perception

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Area of Science:

  • Developmental Psychology
  • Audiology
  • Linguistics

Background:

  • Audiovisual speech perception is crucial for effective communication.
  • Understanding age-related changes in speech perception is vital for audiological interventions.

Purpose of the Study:

  • To investigate the developmental trajectory of audiovisual speech perception from childhood to old age.
  • To analyze the influence of auditory, visual, and audiovisual modalities on speech perception across different age groups.
  • To examine the impact of language context and specific linguistic features on speech perception development.

Main Methods:

  • Utilized speech stimuli (meaningful and nonsense words) presented in auditory, visual, and audiovisual modalities.
  • Employed a signal-to-noise ratio of 0 dB for auditory and audiovisual conditions.
  • Collected data from 77 participants across five age groups (4-5, 8-9, 20-30, 40-50, 65-80 years).

Main Results:

  • Audiovisual and auditory speech perception accuracy exhibited an inverse U-shaped pattern, with peak performance in middle adulthood.
  • Lowest performance was observed in the youngest (4-5 years) and oldest (65-80 years) age groups.
  • Visual speech perception showed a distinct performance gap between children and adults.

Conclusions:

  • Audiovisual speech perception abilities change significantly across the lifespan.
  • The findings highlight critical periods of vulnerability in early childhood and older adulthood for speech perception.
  • Results inform the development of tailored rehabilitation programs for individuals with hearing impairments across different age groups and linguistic backgrounds.