Article (Scientific journals)
Stress enhances heartbeat-evoked potentials, independent of continuous or intermittent theta burst stimulation of the interoceptive brain network targeting the right supramarginal gyrus: a preliminary study.
LAI, Lisa; Bergmann, Til Ole; VÖGELE, Claus et al.
2025In Journal of Neural Transmission, 132 (9), p. 1347 - 1362
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Keywords :
Heartbeat-evoked potentials; Interoception; Interoceptive brain network; Stress; Stress responsiveness; Theta burst stimulation; Neurology; Neurology (clinical); Psychiatry and Mental Health; Biological Psychiatry
Abstract :
[en] The bi-directional communication of the brain-body axis, including afferent (e.g., interoception) and efferent signal transmission (e.g., stress), is critical for understanding stress-related disorders. Transcranial magnetic stimulation using theta burst stimulation (TBS) protocols can be used to inhibit or to enhance activity in the interoceptive brain network (IBN), which may also affect efferent signal transmission, such as stress. This preliminary study aimed at investigating the effects of different TBS protocols that modulate IBN activity on physiological stress responses, as well as of stress responses on interoceptive accuracy (IAc) and heartbeat-evoked potentials (HEPs), which are two measures of cardiac interoception. Twenty-one participants were randomly assigned to either an inhibiting continuous protocol (cTBS), facilitating intermittent stimulation (iTBS), or an ineffective intermediate stimulation (imTBS) protocol targeting the right supramarginal gyrus (rSMG). Participants underwent both a stress (Socially Evaluated Cold Pressor Task) and a control condition. Stress significantly increased systolic/diastolic blood pressure (SBP/DBP) and cortisol levels. Stress did not affect IAc, but increased HEP amplitudes 455–595 ms after the R-wave, regardless of the stimulation protocol. Moreover, we found a trend towards an increase of negativity of HEPs 860–1000 ms, after the R-wave in the cTBS. No further effects of the stimulation condition on stress responses or measures of cardiac interoception were observed. This offers preliminary evidence that IBN stimulation or inhibition does not affect stress responsiveness. Acute stress affects interoceptive attention (reflected by HEPs), but not IAc. Hence, acute stress may enhance attentional resources focused on interoceptive sensations, potentially at the cost of resources for processing exteroceptive sensory information.
Disciplines :
Neurosciences & behavior
Author, co-author :
LAI, Lisa  ;  University of Luxembourg > Faculty of Humanities, Education and Social Sciences > Department of Behavioural and Cognitive Sciences > Team André SCHULZ
Bergmann, Til Ole;  Neuroimaging Center (NIC), Focus Program Translational Neuroscience (FTN), Johannes Gutenberg University Medical Center, Mainz, Germany ; Leibniz Institute for Resilience Research (LIR), Mainz, Germany
VÖGELE, Claus  ;  University of Luxembourg > Faculty of Humanities, Education and Social Sciences (FHSE) > Department of Behavioural and Cognitive Sciences (DBCS) > Health and Behaviour
Aurich, Maike;  Hôpitaux Robert Schuman, ZithaKlinik, Luxembourg, Luxembourg
Salles, Damien;  Hôpitaux Robert Schuman, ZithaKlinik, Luxembourg, Luxembourg
VAN DER MEULEN, Marian  ;  University of Luxembourg
SCHULZ, André  ;  University of Luxembourg > Faculty of Humanities, Education and Social Sciences (FHSE) > Department of Behavioural and Cognitive Sciences (DBCS) > Health and Behaviour
External co-authors :
yes
Language :
English
Title :
Stress enhances heartbeat-evoked potentials, independent of continuous or intermittent theta burst stimulation of the interoceptive brain network targeting the right supramarginal gyrus: a preliminary study.
Publication date :
September 2025
Journal title :
Journal of Neural Transmission
ISSN :
0300-9564
eISSN :
1435-1463
Publisher :
Springer, Austria
Volume :
132
Issue :
9
Pages :
1347 - 1362
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This study was funded by structural means of the Experimental Psychology Laboratories Network (EPSYLON) at the University of Luxembourg.
Available on ORBilu :
since 29 October 2025

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