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A Method to Study Adaptation to Left-Right Reversed Audition
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Published on: October 29, 2018

Auditory space perception in left- and right-handers.

Sebastian Ocklenburg1, Marco Hirnstein, Markus Hausmann

  • 1Department of Biopsychology, Faculty of Psychology, Ruhr-University Bochum, D-44780 Bochum, Germany. sebastian.ocklenburg@rub.de

Brain and Cognition
|September 30, 2009
PubMed
Summary
This summary is machine-generated.

Handedness influences how we perceive sound space. Both right- and left-handed individuals showed a sound localization bias away from their preferred hand, suggesting shared brain processes for spatial awareness.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human Perception

Background:

  • Handedness, a form of laterality, significantly impacts visual-spatial abilities.
  • The influence of laterality on auditory space perception remains less explored.
  • Understanding these effects can reveal insights into supramodal neural processing.

Purpose of the Study:

  • To investigate the effect of hand laterality on auditory space perception.
  • To compare sound localization biases between right-handed and left-handed individuals.
  • To explore potential shared neural mechanisms underlying spatial perception across modalities.

Main Methods:

  • 33 right-handed and 20 left-handed participants completed two sound localization tasks.
  • Sound stimuli were presented horizontally using 21 loudspeakers in a controlled environment.
  • Participants localized sounds using either a hand-pointer or head-pointing, with lateral preferences assessed via questionnaire.

Main Results:

  • A significant bias in sound localization was observed, directed contralateral to the preferred hand, irrespective of pointing method.
  • This bias in auditory perception was independent of overall localization precision.
  • Findings partially mirrored visual spatial biases, such as left-handers' rightward bias in line bisection.

Conclusions:

  • Laterality, specifically handedness, demonstrably affects auditory space perception.
  • The observed bias suggests supramodal neural processes involved in generating laterality in spatial perception.
  • This research highlights similarities in how the brain processes spatial information across auditory and visual domains.