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Related Experiment Video

Updated: Feb 17, 2026

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Sequential dependencies in pitch judgments.

Dorothée Arzounian1, Mathilde de Kerangal2, Alain de Cheveigné1

  • 1Laboratoire des Systèmes Perceptifs, Département d'Etudes Cognitives, Ecole normale supérieure, PSL Research University, CNRS, 29 rue d'Ulm, Paris, 75005, France.

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Area of Science:

  • Auditory perception
  • Psychoacoustics
  • Sensory neuroscience

Background:

  • Pitch discrimination tasks typically assess trial-by-trial stimulus-response relationships.
  • Listener behavior may be influenced by prior auditory stimulation, a factor often overlooked.

Purpose of the Study:

  • To investigate the influence of prior stimulus and response history on current pitch discrimination performance.
  • To develop and validate a comprehensive model accounting for sequential dependencies in auditory tasks.

Main Methods:

  • Participants performed a pitch discrimination task, judging if a tone was higher or lower than the preceding one.
  • Adaptive staircases targeted 75% accuracy, with interleaved tracks to ensure independence of consecutive frequency changes.
  • A computational model incorporating current and previous trial stimulus intervals and responses was developed and compared to simpler models.

Main Results:

  • A model including previous trial stimulus interval and response significantly outperformed simpler models in predicting listener behavior.
  • A positive (assimilative) dependence on the previous frequency interval was observed across all subjects, suggesting sensory trace persistence.
  • Dependence on the previous response varied between positive and negative, indicating subject-specific response strategies.

Conclusions:

  • Listener performance in pitch discrimination is significantly affected by both stimulus and response history.
  • A comprehensive model incorporating sequential dependencies is crucial for accurately estimating sensory noise and understanding auditory behavior.
  • Subject-specific response strategies, beyond sensory trace persistence, play a role in pitch discrimination tasks.