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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Differences in perceptual assimilation following training.

Heather Kabakoff1, Julia Kharlamenko1, Erika S Levy2

  • 1Department of Communicative Sciences and Disorders, New York University, New York, New York 10012, USA.

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Summary

Adults can improve non-native speech sound perception with distributional learning. A bimodal training approach may be most effective for learning new speech contrasts, like French vowels.

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Area of Science:

  • Phonetics
  • Auditory Perception
  • Second Language Acquisition

Background:

  • Adults face challenges learning to distinguish non-native speech sounds.
  • Distributional learning paradigms offer a potential method to enhance perception of foreign language phonemes.

Purpose of the Study:

  • To investigate the effectiveness of distributional learning in improving the perception of non-native speech sounds.
  • To compare the impact of unimodal versus bimodal distributional training on perceptual mapping of French vowels by native English speakers.

Main Methods:

  • Three groups of native English listeners participated.
  • A perceptual assimilation task was used to assess vowel category mapping.
  • Two groups underwent perceptual learning for the French /œ/-/o/ contrast using either bimodal or unimodal distributional training; one group received no training.

Main Results:

  • Both trained groups showed improved perception compared to the untrained group.
  • Participants trained with the bimodal distribution exhibited a distinct perceptual mapping for the French /œ/ vowel.
  • This suggests differential effects of training distributions on phonetic perception.

Conclusions:

  • Distributional learning can enhance non-native speech sound perception in adults.
  • Bimodal distributional training may offer superior benefits for perceptual recalibration of specific non-native vowel contrasts.