Titre
Interoceptive signals impact visual processing: Cardiac modulation of visual body perception.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Ronchi, R.
Auteure/Auteur
Bernasconi, F.
Auteure/Auteur
Pfeiffer, C.
Auteure/Auteur
Bello-Ruiz, J.
Auteure/Auteur
Kaliuzhna, M.
Auteure/Auteur
Blanke, O.
Auteure/Auteur
Liens vers les unités
ISSN
1095-9572
Statut éditorial
Publié
Date de publication
2017-09
Volume
158
Première page
176
Dernière page/numéro d’article
185
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Résumé
Multisensory perception research has largely focused on exteroceptive signals, but recent evidence has revealed the integration of interoceptive signals with exteroceptive information. Such research revealed that heartbeat signals affect sensory (e.g., visual) processing: however, it is unknown how they impact the perception of body images. Here we linked our participants' heartbeat to visual stimuli and investigated the spatio-temporal brain dynamics of cardio-visual stimulation on the processing of human body images. We recorded visual evoked potentials with 64-channel electroencephalography while showing a body or a scrambled-body (control) that appeared at the frequency of the on-line recorded participants' heartbeat or not (not-synchronous, control). Extending earlier studies, we found a body-independent effect, with cardiac signals enhancing visual processing during two time periods (77-130 ms and 145-246 ms). Within the second (later) time-window we detected a second effect characterised by enhanced activity in parietal, temporo-occipital, inferior frontal, and right basal ganglia-insula regions, but only when non-scrambled body images were flashed synchronously with the heartbeat (208-224 ms). In conclusion, our results highlight the role of interoceptive information for the visual processing of human body pictures within a network integrating cardio-visual signals of relevance for perceptual and cognitive aspects of visual body processing.
PID Serval
serval:BIB_5612FE669FE5
PMID
Date de création
2017-07-27T12:31:48.060Z
Date de création dans IRIS
2025-05-20T15:32:54Z