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Higher-level linguistic categories dominate lower-level acoustics in lexical tone processing.

T Christina Zhao1, Patricia K Kuhl1

  • 1Institute for Learning & Brain Sciences, University of Washington, Seattle, Washington 98195, USAzhaotc@uw.edu, pkkuhl@uw.edu.

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Musicians who speak tonal languages like Mandarin show enhanced acoustic processing for music but still rely on linguistic categories for tone perception. This suggests higher-level linguistic influences dominate over lower-level acoustic processing in tone discrimination.

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Area of Science:

  • Psycholinguistics
  • Auditory Neuroscience
  • Music Cognition

Background:

  • Native tonal language speakers show reduced sensitivity to lexical tone differences within categories.
  • Musical training in non-tonal language speakers enhances sensitivity to acoustic properties of tone.
  • The interplay between linguistic and acoustic influences on tone perception is not fully understood.

Purpose of the Study:

  • To investigate the relative contributions of higher-level linguistic and lower-level acoustic processing influences on lexical tone perception.
  • To examine Mandarin-speaking musicians' sensitivity to lexical tone differences.

Main Methods:

  • Seventeen Mandarin-speaking musicians completed lexical tone and music pitch discrimination tasks.
  • Lexical tone discrimination was assessed for tone pairs along a continuum.
  • Music pitch discrimination performance was correlated with lexical tone sensitivity.

Main Results:

  • Mandarin musicians' overall sensitivity to lexical tone differences correlated with music pitch scores, indicating lower-level acoustic processing influence.
  • However, their sensitivity to lexical tone pairs along a continuum mirrored that of Mandarin non-musicians.
  • This suggests dominant higher-level linguistic category influences in lexical tone perception.

Conclusions:

  • Both lower-level acoustic processing (music training) and higher-level linguistic category influences affect tone perception.
  • In Mandarin musicians, higher-level linguistic influences appear to dominate lexical tone discrimination, even with musical expertise.
  • This highlights the complex interaction between auditory perception and linguistic experience.