Human Chemosignals Modulate Interactions Between Social and Emotional Brain Areas

被引:0
作者
Ferdowsi, Saideh [1 ]
Ognibene, Dimitri [1 ]
Foulsham, Tom [2 ]
Abolghasemi, Vahid [1 ]
Li, Wen [3 ]
Citi, Luca [1 ]
机构
[1] Univ Essex, Sch Comp Sci & Elect Engn CSEE, Colchester, Essex, England
[2] Univ Essex, Dept Psychol, Colchester, Essex, England
[3] Florida State Univ, Dept Psychol, Tallahassee, FL 32306 USA
来源
2020 IEEE 20TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOENGINEERING (BIBE 2020) | 2020年
基金
欧盟地平线“2020”;
关键词
Human Chemosignal; Dynamic Causal Modeling (DCM); Effective Connectivity; fMRI;
D O I
10.1109/BIBE50027.2020.00089
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Chemosensory communication is known as an effective way to influence the human emotion system. Phenomena like food selection or motivation, based on chemical signals, present a unique pathway between chemosensory and emotion systems. Human chemosignals (i.e. sweat) which are produced during different emotional states contain associated distinctive odors and are able to induce same emotions in other people. For instance, sweat is known as a social chemosignal participating in social interaction. Chemosignal perception engages a distributed neural network which has not been well characterized yet. In this paper, we use functional magnetic resonance imaging (fMRI) to investigate the neural circuits underlying social emotional chemosignal processing. Chemosignals associated with disgust and neutral conditions were used to induce specific emotional states in fMRI participants during a healthy food judgement. We performed fMRI analysis with the aim of detecting active areas in the brain, followed by a dynamic causal modeling (DCM) analysis. fMRI analysis revealed functional activity in the fusiform face area (FFA), amygdala (AMG) and orbitofrontal cortex (OFC). In order to determine the effective connectivity among these regions as a result of emotional chemosignal processing, a set of dynamic causal models is proposed. Estimating parameters of the proposed models shows that social chemosignals modulate the connections between FFA, AMG and OFC. The results indicate that social chemosignals of disgust converge on orbitofrontal cortex - an area which is a critical region for object appraisal and valuation - after first influencing fusiform face area and amygdala.
引用
收藏
页码:513 / 518
页数:6
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