Auditory Feedback Differentially Modulates Behavioral and Neural Markers of Objective and Subjective Performance When Tapping to Your Heartbeat.
Auditory Feedback Differentially Modulates Behavioral and Neural Markers of Objective and Subjective Performance When Tapping to Your Heartbeat.
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DOI：
10.1093/cercor/bhv076
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发表时间：
2015-11
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影响因子：
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通讯作者：
Bekinschtein TA
中科院分区：
文献类型：
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作者：
Canales-Johnson A;Silva C;Huepe D;Rivera-Rei Á;Noreika V;Garcia Mdel C;Silva W;Ciraolo C;Vaucheret E;Sedeño L;Couto B;Kargieman L;Baglivo F;Sigman M;Chennu S;Ibáñez A;Rodríguez E;Bekinschtein TA
内感受，即对我们身体内部信号的感知，在维持体内平衡和指导我们的行为方面起着关键作用。有时，我们会意识到自己的身体信号，并将其用于规划和战略思考。在这里，我们表现出学习跟随自己的心跳和元认知意识一个人的表现之间的行为和神经分离，在听觉反馈之前和之后进行的心跳敲击任务。内感受性学习者的心跳诱发电位的脑电图振幅，即听觉反馈后敲击心跳的准确性提高的参与者，与非学习者相比更高。然而，增加伽玛相位同步（30-45赫兹）后，心跳听觉反馈只存在于那些参与者之间的协议，客观的内感受性性能和元认知意识。一组参与者的源定位和单个患者的直接皮层记录确定了岛叶皮层内感受性学习的网络中心。总之，内感受性学习可能是由右岛叶对心跳的反应介导的，而学习的元认知意识可能是由广泛的皮层同步模式介导的。
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.