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Related Experiment Video

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Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception
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Speech imagery recalibrates speech-perception boundaries.

Mark Scott1,2

  • 1United Arab Emirates University, Al Ain, Abu Dhabi, United Arab Emirates. mark.a.j.scott@gmail.com.

Attention, Perception & Psychophysics
|April 13, 2016
PubMed
Summary
This summary is machine-generated.

Speech sound perception can shift through recalibration. New research shows that imagining speech, or speech imagery, can also cause these perceptual shifts, similar to other known speech recalibration inducers.

Keywords:
Forward modelsRecalibrationSensory adaptationSpeech imagerySpeech perception

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Area of Science:

  • Psycholinguistics
  • Auditory Perception
  • Cognitive Neuroscience

Background:

  • Perceptual boundaries between speech sounds are not fixed.
  • These boundaries can shift due to exposure to contextual information, a phenomenon termed recalibration.
  • Previous research identified lexical, phonotactic, visual speech (lip-reading), and reading as recalibration inducers.

Purpose of the Study:

  • To investigate whether speech imagery can induce perceptual recalibration of speech sound boundaries.
  • To demonstrate, as a proof-of-effect, that mental simulation of speech can alter auditory speech perception.

Main Methods:

  • Participants were exposed to specific speech contexts designed to induce recalibration.
  • Speech imagery tasks were employed to mentally simulate speech sounds.
  • Perceptual judgments of speech sounds were measured before and after exposure/imagery to assess shifts in boundaries.

Main Results:

  • Speech imagery was demonstrated to induce significant shifts in the perceptual boundaries of speech sounds.
  • The observed recalibration effect through speech imagery was comparable to effects seen with other known inducers.
  • This provides evidence for the role of internal speech representations in perceptual adaptation.

Conclusions:

  • Speech imagery is a novel and effective inducer of speech sound recalibration.
  • These findings highlight the dynamic nature of speech perception and the influence of cognitive processes like imagery.
  • The results contribute to understanding the mechanisms underlying auditory adaptation and perceptual learning in speech.