Comparing aperiodic brain activity between eyes open rest and dynamic visual input using magnetoencephalography
Rattachement africain : tw, us. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract Inscapes is a low demand abstract animation used as an alternative to eyes open rest in neuroimaging studies, particularly with pediatric and clinical populations prone to head motion. Although prior work has established that functional connectivity patterns during Inscapes closely resemble those during rest, no study has examined whether the two conditions differ in aperiodic neural activity, a broadband feature of the power spectrum linked to excitation/inhibition balance. Here we used magnetoencephalography (MEG) in 54 healthy adults to compare spectrally parameterised aperiodic and periodic measures between eyes open rest and Inscapes viewing (visual component only, without audio). At the sensor level, both the aperiodic exponent and offset were significantly higher during rest than during Inscapes across widespread frontoparietal and occipital distributions in both magnetometers and gradiometers. Source level analyses at both the parcellation and vertex levels largely supported these patterns. The pericalcarine cortex was a notable exception, where both aperiodic measures were higher during Inscapes than during rest, indicating a regionally specific reversal in primary visual cortex. These results demonstrate that Inscapes and eyes open rest produce distinct aperiodic spectral profiles, indicating that the two conditions are not interchangeable for analyses involving broadband spectral dynamics or excitation/inhibition balance estimation.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Comparing aperiodic brain activity between eyes open rest and dynamic visual input using magnetoencephalography
- Date Crossref
- 31/03/2026
- Éditeur
- openRxiv
- Type
- posted-content
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
National Central University Institute of Cognitive Neuroscience pays non établi dans la noticeUniversité ou école supérieure
-
Laureate Institute for Brain Research pays non établi dans la noticeStructure de recherche
-
Taipei Medical University Graduate Institute of Mind pays non établi dans la noticeUniversité ou école supérieure
-
University of Tulsa pays non établi dans la noticeUniversité ou école supérieure
-
School of Cyber Studies pays non établi dans la noticeUniversité ou école supérieure
Institute of Cognitive Neuroscience — National Central University, Laureate Institute for Brain Research et Graduate Institute of Mind — Taipei Medical University, avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.