Poster No:
2505
Submission Type:
Abstract Submission
Authors:
Su Hyun Bong1, Dayoung Yoon1, Jaewon Kim1, Bumseok Jeong1
Institutions:
1Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
First Author:
Su Hyun Bong
Korea Advanced Institute of Science and Technology
Daejeon, Republic of Korea
Co-Author(s):
Dayoung Yoon
Korea Advanced Institute of Science and Technology
Daejeon, Republic of Korea
Jaewon Kim
Korea Advanced Institute of Science and Technology
Daejeon, Republic of Korea
Bumseok Jeong
Korea Advanced Institute of Science and Technology
Daejeon, Republic of Korea
Introduction:
Interoception, the perception of the body's internal state, is linked to emotional awareness and various psychiatric disorders such as depression and anxiety. Heartbeat evoked responses (HER) have been regarded as neurophysiological markers of interoception[1]. Previous research indicates an elevation in HER amplitude with increased interoceptive attention, yet primarily contrasts it with resting states[2], resulting in ambiguous findings when comparing with exteroceptive attention . This study aims to elucidate differences in HER amplitudes between exteroceptive and interoceptive conditions and their association with psychiatric symptoms.
Methods:
The study involved 42 participants, with final analyses conducted on 28 for the Heartbeat Counting Task (HCT)[4] and 30 for the Heart Rate Discrimination Task (HRD)[5]. During these tasks, EEG recordings were captured, focusing on the effects of exteroceptive/interoceptive attention on HER. Epoching was performed in the 200-650 ms range post-EKG R-peak, and statistical analyses included T-tests (HCT) and ANOVA (HRD), supplemented by regression analysis with covariates like interoceptive accuracy (HCT) and PHQ-9/STAI-X1(HRD). Statistics utilized EEGLAB's LIMO[6] toolbox, with cluster significance assessed via bootstrap at a 0.05 threshold.
Results:
In the HCT, the interoception condition showed higher HER amplitude post R-peak (555-605ms) compared to resting. Higher interoceptive accuracy correlated with greater amplitude disparity (370-390ms). In HRD, while significant differences were noted among the three conditions (200-396ms, 400-632ms), no marked disparity was found between exteroception and interoception. Notably, increased PHQ-9/STAI-X1 scores (344-348ms, 344-364ms) were linked to greater HER amplitude contrasts in both exteroceptive and interoceptive conditions, suggesting a complex interaction with psychiatric symptoms.
Conclusions:
Contrary to previous research, no significant HER amplitude differences were observed between exteroceptive and interoceptive conditions. However, the study highlights a significant link between psychiatric symptoms and HER amplitude variation within these attentional contexts. These findings suggest that exteroceptive attention can influence HER, reflecting a nuanced interplay between attentional types, HER changes, and psychiatric symptoms, indicating a need for a broader understanding of HER in dynamic neural mechanisms.
Emotion, Motivation and Social Neuroscience:
Emotional Perception 2
Higher Cognitive Functions:
Decision Making
Perception, Attention and Motor Behavior:
Perception: Auditory/ Vestibular
Perception: Pain and Visceral 1
Keywords:
Perception
Other - Interoception, Heartbeat Evoked Response
1|2Indicates the priority used for review
Provide references using author date format
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2. Coll, M. P., Hobson, H., Bird, G., & Murphy, J. (2021). Systematic review and meta-analysis of the relationship between the heartbeat-evoked potential and interoception. Neuroscience & Biobehavioral Reviews, vol. 122, pp. 190-200.
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6. Pernet, C. R., Chauveau, N., Gaspar, C., & Rousselet, G. A. (2011). LIMO EEG: a toolbox for hierarchical LInear MOdeling of ElectroEncephaloGraphic data. Computational intelligence and neuroscience, vol. 2011, pp. 1-11.