Neural network dynamics underlying the bottom-up perception and top-down regulation processes of empathy

Area of Science:

• Neuroscience
• Cognitive Psychology
• Social Neuroscience

Background:

• Theoretical models propose empathy involves bottom-up perception and top-down regulation.
• Limited direct evidence exists for a hierarchical neural organization in empathy processing.

Purpose of the Study:

• To investigate the hierarchical neural organization of empathy.
• To explore shared versus valence-specific processing in positive and negative empathy using functional magnetic resonance imaging (fMRI).

Main Methods:

• Utilized fMRI with positive, negative, and neutral stimuli.
• Analyzed information flow between brain regions involved in empathy.

Main Results:

• Bottom-up perception involves the inferior frontal gyrus (IFGtri) and superior temporal sulcus (STS), with IFGtri initiating flow to STS.
• Top-down regulation involves the dorsolateral superior frontal gyrus (dlSFG), medial prefrontal gyrus (mPFC), and precuneus.
• Positive stimuli showed more top-down regulation inhibition than negative stimuli, suggesting distinct neural mechanisms for processing different emotional valences.

Conclusions:

• Provides direct evidence for a hierarchical neural network supporting empathy models.
• Offers novel insights into the brain's instantiation of bottom-up perception and top-down regulation in empathy.