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Area of Science:

  • Auditory Perception
  • Psychoacoustics
  • Speech Processing

Background:

  • Speech recognition in noise is challenging due to the need for auditory stream segregation.
  • Stochastic figure-ground (SFG) tasks assess non-linguistic auditory segregation, but their link to speech-in-noise abilities and individual differences is unclear.

Purpose of the Study:

  • To investigate the relationship between SFG task performance and speech-in-noise recognition.
  • To explore how individual differences in cognitive and auditory abilities modulate this relationship.

Main Methods:

  • 37 young, normal-hearing adults completed an SFG task with varying numbers of target tones (4-10) in a background of random tones.
  • Participants also performed the Quick Speech-in-Noise (QN) test.
  • Working memory capacity and musicianship were assessed.

Main Results:

  • Increased target tones in the SFG task improved accuracy and reduced reaction times (RTs).
  • Faster RTs on the SFG task with 10 target tones correlated with better QN test scores.
  • Working memory and musicianship influenced the relationship between SFG performance and speech-in-noise ability.

Conclusions:

  • The SFG task effectively assesses auditory stream segregation accuracy and RT.
  • SFG performance is sensitive to individual differences in cognitive and auditory skills, even in young, normal-hearing adults.
  • SFG tasks may offer insights into the non-linguistic basis of speech-in-noise processing.