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Articulatory variability in cluttering.

Mariam Hartinger1, Christine Mooshammer

  • 1Zentrum fur Allgemeine Sprachwissenschaft (ZAS), Berlin, Germany. hartinger@zas.gwz-berlin.de

Folia Phoniatrica Et Logopaedica : Official Organ of the International Association of Logopedics and Phoniatrics (IALP)
|February 1, 2008
PubMed
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People with cluttering exhibit greater speech variability in complex words compared to controls. This kinematic variability suggests challenges in motor control for intricate linguistic tasks in cluttering speech.

Area of Science:

  • Speech-Language Pathology
  • Linguistics
  • Biomechanics

Background:

  • Cluttering is a speech disorder characterized by rapid, mumbled speech.
  • Articulatory kinematic variability is a key metric in understanding speech motor control stability.
  • Previous research often compares cluttering to stuttering, noting differences in intelligibility improvement strategies.

Purpose of the Study:

  • To analyze spatial and temporal kinematic variability in the speech of individuals who clutter (PWC) compared to control speakers.
  • To investigate the impact of linguistic complexity on articulatory variability in cluttering.
  • To explore the stability of the speech motor system in PWC.

Main Methods:

  • Electromagnetic midsagittal articulography (EMMA) was used to record articulatory movements.

Related Experiment Videos

  • Participants included three PWC and three control speakers of German.
  • Speech tasks involved repetitive consonant-vowel (CV) syllables and complex loan words (e.g., 'emotionalisieren').

    • Main Results:

    • PWC showed significantly higher coefficients of variation in both temporal and spatial domains for loan word production.
    • No significant differences in mean displacements or durations were observed between PWC and controls.
    • No significant differences were found for the simpler CV syllable repetition task.

    Conclusions:

    • Linguistic complexity significantly affects articulatory variability in individuals with cluttering.
    • The speech motor system in PWC appears less stable when processing complex words.
    • Findings highlight the role of linguistic demands in the manifestation of cluttering speech characteristics.