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Cardiac cycle phase affect auditory-evoked potentials in response to acoustic startle stimuli, but not perceived intensity ratings
BERNARD, Sam; Münch, E. E.; Hansen, G. et al.
2019In Kirschbaum, C. (Ed.) 45. Jahrestagung Psychologie und Gehirn - Abstractband
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Abstract :
[en] Startle stimuli presented in the early cardiac cycle phase elicit lower responses than stimuli presented in the late cardiac cycle phase. This effect, named ‚Cardiac modulation of startle (CMS)‘, was proposed to reflect baro-afferent signal processing in the central nervous system. It is yet unclear, however, whether the CMS is due to a general sensory attenuation effect by baro-afferent signal transmission or to a specific neural pathway that selectively attenuates startle stimulus processing, but may eventually enhance other processes. The aim of the present study was, therefore, to address this issue. In this present study 23 female participants were presented acoustic stimuli of varying intensities (95, 100, and 105 dBA) during early (R-wave + 230 ms) and late (R+ 530 ms) cardiac cycle phase. Startle responses (EMG of the M. Orbicularis Oculi), auditory-evoked potentials (AEPs), and perceived intensity ratings of all stimuli were assessed. Higher startle stimulus intensities evoked higher perceived intensity ratings, stronger EMG startle responses, and higher N1, P2, and P3 AEPs. Startle stimuli in the early cardiac cycle phase elicited lower startle responses, and a positive shift of the N1 and P3 components as compared to the late cardiac cycle phase. Intensity ratings were unaffected by the cardiac cycle phases. The present AEP pattern associated with CMS appears to be unique across all startle modulation paradigms, supporting a more specific neural pathway, rather than a general sensory attenuation.
Disciplines :
Neurosciences & behavior
Author, co-author :
BERNARD, Sam ;  University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE)
Münch, E. E.
Hansen, G.
Bertsch, K.
Vögele, Claus ;  University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE)
SCHULZ, André  ;  University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE)
External co-authors :
yes
Language :
English
Title :
Cardiac cycle phase affect auditory-evoked potentials in response to acoustic startle stimuli, but not perceived intensity ratings
Publication date :
2019
Event name :
45. Jahrestagung Psychologie und Gehirn
Event organizer :
Deutsche Gesellschaft für Psychophysiologie und deren Anwendung (DGPA) und Fachgruppe Biologische Psychologie und Neuropsychologie der DGPs
Event place :
Dresden, Germany
Event date :
20-06-2019 to 22-06-2019
Audience :
International
Main work title :
45. Jahrestagung Psychologie und Gehirn - Abstractband
Author, co-author :
Kirschbaum, C.
Publisher :
University of Dresden, Dresden, Germany
Pages :
80-81
Peer reviewed :
Peer reviewed
Available on ORBilu :
since 05 November 2019

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