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A Method to Study Adaptation to Left-Right Reversed Audition
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Auditory adaptation in vocal affect perception.

Patricia E G Bestelmeyer1, Julien Rouger, Lisa M DeBruine

  • 1Institute of Neuroscience and Psychology, Centre for Cognitive Neuroimaging, University of Glasgow, Glasgow, UK. p.bestelmeyer@psy.gla.ac.uk

Cognition
|September 1, 2010
PubMed
Summary
This summary is machine-generated.

This study shows that listening to angry or fearful voices can change how we perceive subsequent vocal sounds, demonstrating auditory aftereffects. These effects suggest adaptation in how our brains process vocal emotions, not just sound qualities.

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Area of Science:

  • Auditory perception
  • Affective science
  • Neuroscience

Background:

  • Perceptual aftereffects are known for emotional faces.
  • It was unknown if similar effects exist for auditory emotional stimuli.

Purpose of the Study:

  • To investigate auditory aftereffects from affective vocalizations.
  • To determine if these aftereffects are based on low-level acoustics or higher-level representations of vocal affect.

Main Methods:

  • Two experiments were conducted using non-linguistic vocalizations.
  • Participants adapted to angry or fearful vocalizations, then rated voices on an anger-fear continuum.
  • Caricatured vocalizations were used to test the role of acoustic properties.

Main Results:

  • Adaptation to angry vocalizations led to voices being perceived as less angry and more fearful.
  • Adaptation to fearful vocalizations produced opposite aftereffects.
  • Caricatured adaptors produced aftereffects comparable to natural vocalizations.

Conclusions:

  • Affective vocalizations elicit significant auditory aftereffects.
  • These aftereffects suggest adaptation of higher-level neural representations of vocal affect, not solely low-level acoustic adaptation.