期刊
CEREBRAL CORTEX
卷 25, 期 11, 页码 4490-4503出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/cercor/bhv076
关键词
heartbeat-evoked potential; interoception; learning; metacognitive awareness; phase synchrony
资金
- Wellcome Trust Biomedical Research Fellowship [WT093811MA]
- Chilean National Fund for Scientific and Technological Development [1130920]
- Argentinean National Research Council for Science and Technology
- Argentinean Agency for National Scientific Promotion
- [FONCyT -PICT 2012-0412]
- [FONCyT-PICT 2012-1309]
- Medical Research Council [G1000183B, G0001354, G0001354B] Funding Source: researchfish
Interoception, the perception of our body internal signals, plays a key role in maintaining homeostasis and guiding our behavior. Sometimes, we become aware of our body signals and use them in planning and strategic thinking. Here, we show behavioral and neural dissociations between learning to follow one's own heartbeat and metacognitive awareness of one's performance, in a heartbeat-tapping task performed before and after auditory feedback. The electroencephalography amplitude of the heartbeat-evoked potential in interoceptive learners, that is, participants whose accuracy of tapping to their heartbeat improved after auditory feedback, was higher compared with non-learners. However, an increase in gamma phase synchrony (30-45 Hz) after the heartbeat auditory feedback was present only in those participants showing agreement between objective interoceptive performance and metacognitive awareness. Source localization in a group of participants and direct cortical recordings in a single patient identified a network hub for interoceptive learning in the insular cortex. In summary, interoceptive learning may be mediated by the right insular response to the heartbeat, whereas metacognitive awareness of learning may be mediated by widespread cortical synchronization patterns.
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