“Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI)
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 blood-oxygenation-level-dependent (BOLD) signals, heart rate (HR) beat-to-beat intervals (RRI) and respiration. The goal of the prese...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2018-11-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fphys.2018.01688/full |
| _version_ | 1830414387781828608 |
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| author | Beate Rassler Andreas Schwerdtfeger Andreas Schwerdtfeger Christoph Stefan Aigner Christoph Stefan Aigner Gert Pfurtscheller Gert Pfurtscheller |
| author_facet | Beate Rassler Andreas Schwerdtfeger Andreas Schwerdtfeger Christoph Stefan Aigner Christoph Stefan Aigner Gert Pfurtscheller Gert Pfurtscheller |
| author_sort | Beate Rassler |
| collection | DOAJ |
| description | 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 blood-oxygenation-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. |
| first_indexed | 2024-12-20T20:44:15Z |
| format | Article |
| id | doaj.art-c5aa13b251f84b649bd61decb2bc35b6 |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-12-20T20:44:15Z |
| publishDate | 2018-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physiology |
| spelling | doaj.art-c5aa13b251f84b649bd61decb2bc35b62022-12-21T19:27:05ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2018-11-01910.3389/fphys.2018.01688420710“Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI)Beate Rassler0Andreas Schwerdtfeger1Andreas Schwerdtfeger2Christoph Stefan Aigner3Christoph Stefan Aigner4Gert Pfurtscheller5Gert Pfurtscheller6Carl-Ludwig-Institute of Physiology, University of Leipzig, Leipzig, GermanyDepartment of Psychology, University of Graz, Graz, AustriaBioTechMed-Graz, Graz, AustriaBioTechMed-Graz, Graz, AustriaInstitute of Medical Engineering, Graz University of Technology, Graz, AustriaBioTechMed-Graz, Graz, AustriaInstitute of Neural Engineering, Graz University of Technology, Graz, AustriaA 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 blood-oxygenation-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.https://www.frontiersin.org/article/10.3389/fphys.2018.01688/fullrespiratory sinus arrhythmiaheart rate variability∼0.1 Hz oscillationsstate anxietyfunctional magnetic resonance imagingemotion regulation |
| spellingShingle | Beate Rassler Andreas Schwerdtfeger Andreas Schwerdtfeger Christoph Stefan Aigner Christoph Stefan Aigner Gert Pfurtscheller Gert Pfurtscheller “Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI) Frontiers in Physiology respiratory sinus arrhythmia heart rate variability ∼0.1 Hz oscillations state anxiety functional magnetic resonance imaging emotion regulation |
| title | “Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI) |
| title_full | “Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI) |
| title_fullStr | “Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI) |
| title_full_unstemmed | “Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI) |
| title_short | “Switch-Off” of Respiratory Sinus Arrhythmia Can Occur in a Minority of Subjects During Functional Magnetic Resonance Imaging (fMRI) |
| title_sort | switch off of respiratory sinus arrhythmia can occur in a minority of subjects during functional magnetic resonance imaging fmri |
| topic | respiratory sinus arrhythmia heart rate variability ∼0.1 Hz oscillations state anxiety functional magnetic resonance imaging emotion regulation |
| url | https://www.frontiersin.org/article/10.3389/fphys.2018.01688/full |
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