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Related Experiment Video

Updated: Feb 27, 2026

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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Change deafness for real spatialized environmental scenes.

Jeremy Gaston1, Kelly Dickerson1, Daniel Hipp1

  • 1Army Research Laboratory, Human Research and Engineering Directorate, Adelphi, MD USA.

Cognitive Research: Principles and Implications
|July 7, 2017
PubMed
Summary

Listeners often miss auditory changes in complex environments, a phenomenon known as change deafness. Spatially separating sounds significantly reduces these errors, improving change detection in busy soundscapes.

Keywords:
Change deafnessCued-recallEnvironmental soundSimilarity effectsSpatial audio

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Area of Science:

  • Auditory Perception
  • Cognitive Psychology
  • Acoustics

Background:

  • Everyday auditory environments are complex, with competing sounds demanding cognitive resources.
  • Change deafness, the auditory equivalent of change blindness, describes missed auditory changes in complex settings.

Purpose of the Study:

  • To investigate stimulus factors influencing change deafness in realistic listening conditions.
  • To examine the impact of spatial separation and change type on auditory change detection.
  • To explore the relationship between auditory scene memory and change discrimination.

Main Methods:

  • An AX (same-different) discrimination task with a loudspeaker array was employed.
  • Sound source additions and removals were tested in complex background soundscapes.
  • Cued recall tests assessed memory for auditory scene contents.

Main Results:

  • Spatially distributed sound scenes significantly reduced listener errors compared to non-spatial scenes.
  • Auditory recall accuracy was comparable, but sensitivity decreased.
  • Perceptual similarity between change targets and background sounds correlated with error magnitude.

Conclusions:

  • Spatial separation of sound sources is a key factor in mitigating change deafness.
  • Auditory memory sensitivity may be affected in complex change detection tasks.
  • Soundscape characteristics, including perceptual similarity, influence the likelihood of detecting auditory changes.