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Attention and emotion shape self-voice prioritization in speech processing.

Ana P Pinheiro1, João Sarzedas2, Magda S Roberto2

  • 1CICPSI, Faculdade de Psicologia, Universidade de Lisboa, Lisboa, Portugal; Basic and Applied NeuroDynamics Lab, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|December 6, 2022
PubMed
Summary
This summary is machine-generated.

The brain prioritizes processing of one's own voice, with emotion and attention further shaping this self-voice advantage. This occurs even when attention is directed elsewhere, impacting auditory hallucination understanding.

Keywords:
EmotionEvent-related potentialsSelf-relevanceSpeechVoice

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Speech Processing

Background:

  • Self-voice and emotional speech are salient perceptual signals.
  • Self-voice perception is less studied than self-face perception.
  • The interplay of self-relevance, emotion, and attention in voice processing requires clarification.

Purpose of the Study:

  • To investigate if emotion enhances self-voice prioritization.
  • To examine how self-relevance and emotion interact under different attentional foci (speaker vs. speech).
  • To understand the neural dynamics of self-voice processing using event-related potentials (ERPs).

Main Methods:

  • Thirty participants listened to prerecorded words in self or unfamiliar voices, with varying emotional valence.
  • Two tasks manipulated attention focus: speaker identity vs. speech emotion.
  • Electroencephalogram (EEG) recorded event-related potentials (ERPs) to analyze temporal dynamics.

Main Results:

  • Self-voice elicited enhanced early (N1) and late (LPP) ERPs, and reduced N400, indicating early sensory prioritization.
  • Speaker identity and emotion interactively modulated P2 and LPP components.
  • Attention to identity affected early ERPs (<600 ms), while attention to emotion affected late ERPs (LPP).

Conclusions:

  • Self-voice is prioritized in neural processing at early sensory stages.
  • Emotion and attention dynamically shape self-voice prioritization in speech.
  • Salient signals (self-relevance, emotion) are processed involuntarily, informing understanding of conditions like auditory verbal hallucinations.