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Related Experiment Video

Updated: Mar 9, 2026

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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Auditory Localisation Biases Increase with Sensory Uncertainty.

Sara E Garcia1,2, Pete R Jones1,2, Gary S Rubin1,2

  • 1University College London, UCL Institute of Ophthalmology, London, UK.

Scientific Reports
|January 12, 2017
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Summary
This summary is machine-generated.

Auditory localisation biases in normal-hearing adults increased with sensory uncertainty, suggesting reliance on prior knowledge. Training with visual feedback improved these biases, but further research is needed to explain all observed effects.

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Area of Science:

  • Auditory perception
  • Psychophysics
  • Neuroscience

Background:

  • Normal-hearing adults show systematic errors (biases) in auditory localisation.
  • Previous research suggests perceptual biases may stem from reliance on prior knowledge.
  • The role of prior knowledge and the impact of training on auditory localisation biases are not fully understood.

Purpose of the Study:

  • To investigate if auditory localisation errors in normal-hearing adults reflect prior knowledge.
  • To determine if auditory localisation biases can be reduced through training with visual feedback.

Main Methods:

  • Twenty-four normal-hearing participants performed auditory localisation tasks.
  • Participants localised noise bursts along the azimuth before, during, and after training.
  • Training involved accurate visual feedback, with varying reliability tested.

Main Results:

  • Auditory localisation biases increased with auditory uncertainty, supporting the prior knowledge hypothesis.
  • Participants systematically mis-localised stimuli as more eccentric, especially with greater uncertainty.
  • Localisation biases decreased after visual feedback training, irrespective of feedback reliability.

Conclusions:

  • Findings suggest prior knowledge influences auditory localisation, particularly under sensory uncertainty.
  • Visual feedback training can improve auditory localisation accuracy.
  • Alternative mechanisms beyond prior knowledge may explain increased biases under uncertainty, warranting further investigation.