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Related Experiment Video

Updated: Aug 31, 2025

Testing Tactile Masking between the Forearms
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Masking auditory feedback does not eliminate repetition reduction.

Cassandra L Jacobs1, Torrey M Loucks2, Duane G Watson3

  • 1University of Wisconsin, Madison.

Language, Cognition and Neuroscience
|August 22, 2022
PubMed
Summary
This summary is machine-generated.

Repetition reduction in speech duration occurs even without full auditory feedback. This suggests that other sensory inputs, like somatosensory feedback, also contribute to speech production adjustments.

Keywords:
auditory feedbackfeedforward processeslanguage productionrepetition reduction

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Area of Science:

  • Speech production and acoustics
  • Auditory perception and feedback mechanisms
  • Motor control in speech

Background:

  • Repetition typically leads to reduced word duration in speech.
  • Previous theories emphasized auditory feedback as essential for this reduction.
  • The auditory feedback hypothesis posits that hearing a word is necessary for subsequent duration reduction.

Purpose of the Study:

  • To rigorously test the auditory feedback hypothesis.
  • To investigate the role of auditory feedback in repetition-induced speech duration reduction.
  • To explore alternative feedback mechanisms supporting this phenomenon.

Main Methods:

  • Two experiments were conducted to test the auditory feedback hypothesis.
  • Masked auditory feedback was used to limit speakers' self-hearing.
  • Whispering techniques were employed to further restrict auditory feedback during speech production.

Main Results:

  • Repetition reduction in word duration was observed to a similar extent in both masked and unmasked conditions.
  • Limiting auditory feedback did not eliminate the effect of repetition on speech duration.
  • The findings indicate that auditory feedback is not the sole determinant of repetition reduction.

Conclusions:

  • Auditory feedback is not exclusively required for repetition reduction in speech.
  • Somatosensory feedback and feedforward signals likely play significant roles.
  • Speech production adjustments during repetition are supported by multiple sensory and motor systems.