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Brain Imaging Investigation of the Neural Correlates of Emotion Regulation
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Emotions amplify speaker-listener neural alignment.

Dmitry Smirnov1, Heini Saarimäki1, Enrico Glerean1

  • 1Department of Neuroscience and Biomedical Engineering (NBE), and Aalto NeuroImaging, Aalto University, Espoo, Finland.

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|August 11, 2019
PubMed
Summary
This summary is machine-generated.

Brain activity synchronizes between speakers and listeners during emotional conversations. This neural synchronization, measured via functional magnetic resonance imaging (fMRI), reflects shared emotional experiences and may underlie emotional contagion.

Keywords:
contagionemotionfMRIspeechsynchronization

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Area of Science:

  • Neuroscience
  • Social Psychology
  • Cognitive Science

Background:

  • Emotional alignment during conversations is a common human experience.
  • Understanding the neural mechanisms underlying shared emotional states is crucial for social interaction research.

Purpose of the Study:

  • To investigate how emotional alignment between speakers and listeners is reflected in synchronized brain activity.
  • To identify specific brain regions and neural synchronization patterns associated with emotional arousal and valence during dyadic communication.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to measure hemodynamic brain activity in speakers telling autobiographical stories and listeners hearing them.
  • Intersubject phase synchronization (ISPS) quantified the similarity of blood-oxygenation-level-dependent (BOLD) time series between speaker-listener pairs.
  • Subjects rated the moment-to-moment valence and arousal of the stories.

Main Results:

  • Telling and listening to stories induced similar emotions in speakers and listeners.
  • Arousal correlated with increased neural synchronization in attentional, auditory, somatosensory, and motor regions.
  • Valence correlated with increased neural synchronization in emotional processing regions like the amygdala, hippocampus, and temporal pole.

Conclusions:

  • Speaker-listener neural synchronization is modulated by the emotional content (arousal and valence) of the communication.
  • Synchronization of subjective arousal and valence maps onto distinct neural networks.
  • Emotion-dependent neural synchronization may facilitate emotional contagion, enabling listeners to neurally mirror speakers' emotional states.