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Visually Induced Emotional Valence Evaluation using Physiologic Network-Based Brain-Heart Interaction |
Cai Zhipeng1#, Gao Hongxiang1#, Li Jianqing1,2, Liu Chengyu1#* |
1(State Key Laboratory of Digital Medical Engineering, School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China) 2(School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China) |
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Abstract In the past decade, complex physiological interactions between brain and heart during emotional processing have become a research hotspot. This study employed network physiological methods to analyze the time-delay stability(TDS) quantization indices between electroencephalogram (EEG) and electrocardiogram (ECG) signals recorded during visually induced emotional stimuli in 414 data entries from the Dreamer database, exploring the brain-heart interaction under visual emotional stimulation. The research revealed asymmetric connectivity between the brain hemispheres during emotional processing, particularly highlighting the dominant role of the right hemisphere in these interactions. EEG analysis emphasized the critical role of low-frequency bands (δ, θ, α) in the transmission of emotional information, with δ-θ coupling in the frontal region being particularly crucial for emotional regulation. In high-valence emotional states, the %TDS value of δ-θ coupling (0.78±0.05) was significantly higher than in low-valence states (0.65±0.04). Additionally, the average link strength of brain-heart interactions in low-valence states reached its peak (0.68±0.06), while in high-valence states, it decreased to the lowest (0.59±0.03). These findings not only enhance our understanding of the synchronization mechanisms between the cortical brain and heart in emotional processing but also enrich the knowledge base in neurophysiology and emotional science.
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Received: 16 July 2024
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Corresponding Authors:
*E-mail: chengyu@seu.edu.cn
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About author:: #(Member, Chinese Society of Biomedical Engineering) |
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