When the Heart Meets the Mind: Exploring the Brain-Heart Interaction during Time Perception.

Autor:	Khoshnoud S; Institute for Frontier Areas of Psychology and Mental Health, 79098 Freiburg, Germany shiva.khoshnoud@uni-tuebingen.de.; Institute for Neuromodulation and Neurotechnology, University Hospital Tübingen, 72076 Tübingen, Germany., Leitritz D; Institute for Frontier Areas of Psychology and Mental Health, 79098 Freiburg, Germany.; Department of Psychological Methods, University of Amsterdam, 1018 WT Amsterdam, Netherlands., Çinar Bozdağ M; Department of Psychiatry, Faculty of Medicine, Gazi University, Ankara 06500, Türkiye., Alvarez Igarzábal F; Institute for Frontier Areas of Psychology and Mental Health, 79098 Freiburg, Germany., Noreika V; Department of Biological and Experimental Psychology, School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, United Kingdom., Wittmann M; Institute for Frontier Areas of Psychology and Mental Health, 79098 Freiburg, Germany.
Jazyk:	angličtina
Zdroj:	The Journal of neuroscience : the official journal of the Society for Neuroscience [J Neurosci] 2024 Aug 21; Vol. 44 (34). Date of Electronic Publication: 2024 Aug 21.
DOI:	10.1523/JNEUROSCI.2039-23.2024
Abstrakt:	Recent studies suggest that time estimation relies on bodily rhythms and interoceptive signals. We provide the first direct electrophysiological evidence suggesting an association between the brain's processing of heartbeat and duration judgment. We examined heartbeat-evoked potential (HEP) and contingent negative variation (CNV) during an auditory duration-reproduction task and a control reaction-time task spanning 4, 8, and 12 s intervals, in both male and female participants. Interoceptive awareness was assessed with the Self-Awareness Questionnaire (SAQ) and interoceptive accuracy through the heartbeat-counting task (HCT). Results revealed that SAQ scores, but not the HCT, correlated with mean reproduced durations with higher SAQ scores associating with longer and more accurate duration reproductions. Notably, the HEP amplitude changes during the encoding phase of the timing task, particularly within 130-270 ms (HEP1) and 470-520 ms (HEP2) after the R -peak, demonstrated interval-specific modulations that did not emerge in the control task. A significant ramp-like increase in HEP2 amplitudes occurred during the duration-encoding phase of the timing but not during the control task. This increase within the reproduction phase of the timing task correlated significantly with the reproduced durations for the 8 s and the 4 s intervals. The larger the increase in HEP2, the greater the under-reproduction of the estimated duration. CNV components during the encoding phase of the timing task were more negative than those in the reaction-time task, suggesting greater executive resources orientation toward time. We conclude that interoceptive awareness (SAQ) and cortical responses to heartbeats (HEP) predict duration reproductions, emphasizing the embodied nature of time. Competing Interests: The authors declare no competing financial interests. (Copyright © 2024 the authors.)
Databáze:	MEDLINE
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