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'Switch-Off' of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI)

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العنوان: 'Switch-Off' of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI)
المؤلفون: Rassler, Beate, Schwerdtfeger, Andreas, Aigner, Christoph Stefan, Pfurtscheller, Gert
Publication Status: publishedVersion
بيانات النشر: Frontiers Research Foundation, 2018.
سنة النشر: 2018
المجموعة: Hochschulschriftenserver (HSSS) der SLUB Dresden
Original Material: urn:nbn:de:bsz:15-qucosa2-837926
مصطلحات موضوعية: respiratory sinus arrhythmia, heart rate variability, 0.1 Hz oscillations, state anxiety, functional magnetic resonance imaging, emotion regulation, info:eu-repo/classification/ddc/610, ddc:610
الوصف: A group of 23 healthy scanner naïve participants of a functional magnetic resonance imaging (fMRI) study with increased state anxiety exhibited 0.1 Hz oscillations in bloodoxygenation- level-dependent (BOLD) signals, heart rate (HR) beat-to-beat intervals (RRI) and respiration. The goal of the present paper is to explore slow oscillations in respiration and RRI and their phase-coupling by applying the dynamic “wave-by-wave” analysis. Five participants with either high or moderate levels of fMRI-related anxiety (age 23.8 3.3y) were found with at least one bulk of consecutive breathing waves with a respiration rate between 6 to 9 breaths/min in a 5-min resting state. The following results were obtained: (i) Breathing oscillations with dominant frequencies at 0.1 Hz and 0.15 Hz displayed a 1:1 coupling with RRI. (ii) Inspiration time was significantly longer than expiration time. (iii) RRI minima (start of HR decrease) coincided with the early inspiration, and RRI maxima (start of HR increase) coincided with the late inspiration. (iv) RRI rhythm led over the respiratory rhythm. This phase-coupling pattern is quite contrary to typical respiratory sinus arrhythmia where HR increases during inspiration and decreases during expiration.
Original Identifier: oai:qucosa:de:qucosa:83792
نوع الوثيقة: Article
اللغة: English
تدمد: 1664-042X
Relation: 1688
الاتاحة: https://ul.qucosa.de/id/qucosa%3A83792
https://ul.qucosa.de/api/qucosa%3A83792/attachment/ATT-0/
Rights: info:eu-repo/semantics/openAccess
رقم الانضمام: edsndl.DRESDEN.oai.qucosa.de.qucosa.83792
قاعدة البيانات: Networked Digital Library of Theses & Dissertations
الوصف
تدمد:1664042X