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Patricia E G Bestelmeyer1, Marianne Latinus, Laetitia Bruckert

  • 1Institute of Neuroscience and Psychology, University of Glasgow, Glasgow G12 8QB, UK. patricia.bestelmeyer@glasgow.ac.uk

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Summary
This summary is machine-generated.

Vocal attractiveness influences decisions more than previously thought. Brain scans show auditory and frontal regions process vocal attractiveness, revealing hidden nonlinguistic communication signals.

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Area of Science:

  • Neuroscience
  • Social Psychology
  • Acoustic Phonetics

Background:

  • Social interactions rely on both language and nonlinguistic cues.
  • Vocal attractiveness is an "honest signal" influencing social perceptions, but its neural basis is unknown.
  • The "what sounds beautiful is good" phenomenon links vocal traits to perceived qualities.

Purpose of the Study:

  • To investigate the neural underpinnings of perceived vocal attractiveness.
  • To determine how the brain processes nonlinguistic vocal cues.
  • To correlate brain activity with implicit judgments of vocal attractiveness.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
  • Participants listened to non-linguistic vocal sounds ("ah").
  • An unrelated task was performed concurrently to focus on passive auditory processing.

Main Results:

  • Voice-sensitive auditory and inferior frontal regions showed strong correlations with perceived vocal attractiveness.
  • Auditory areas processed acoustic features contributing to attractiveness (e.g., "distance to mean", spectrotemporal regularity).
  • Inferior prefrontal regions, typically linked to speech, processed overall attractiveness of non-linguistic vocalizations.

Conclusions:

  • Nonlinguistic vocal characteristics significantly influence cerebral activity.
  • Brain regions involved in speech processing also respond to the attractiveness of non-linguistic sounds.
  • These findings offer an objective measure of the impact of hidden communication signals.