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Effective connectivity during visual processing is affected by emotional state.

Miroslaw Wyczesany1, Tomasz S Ligeza2, Szczepan J Grzybowski3

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Brain Imaging and Behavior
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Summary

Emotional state significantly impacts brain connectivity. Tension increases prefrontal control over visual and attentional networks, while positive moods enhance parietal-occipital information flow, influencing how we process stimuli.

Keywords:
AttentionDirected transfer functionEffective connectivityMoodVisual perception

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Affective Science

Background:

  • Cognitive resources require selective information processing from visual input.
  • This selection process is dynamic, influenced by internal and external factors.
  • Understanding how emotional states modulate brain connectivity during affective stimulus perception is crucial.

Purpose of the Study:

  • To investigate the effect of emotional state on effective connectivity.
  • To examine brain activity in visual, attentional, and control areas during affective visual stimulus perception.
  • To correlate electroencephalography (EEG) data with self-reported emotional states.

Main Methods:

  • Utilized 32-electrode EEG recordings to capture brain activity.
  • Applied Directed Transfer Function (DTF) to quantify information flow.
  • Correlated DTF measures with self-reported mood states during positive and negative emotional conditions.

Main Results:

  • Current mood significantly alters effective cortical connectivity patterns.
  • A state of tension showed increased prefrontal top-down control over visual and attentional areas.
  • Positive emotional states were linked to enhanced information flow from parietal to occipital regions.

Conclusions:

  • Emotional state is a key modulator of effective brain connectivity.
  • Specific connectivity patterns are associated with different emotional states (tension vs. positive).
  • Findings highlight the brain's adaptive mechanisms in processing affective stimuli based on mood.