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Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment

Heart rate variability (HRV) is regularly assessed in neuroimaging studies as an indicator of autonomic, emotional or cognitive processes. In this study, we investigated the influence of a loud and cramped environment during magnetic resonance imaging (MRI) on resting HRV measures. We compared recor...

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Autores principales: Schumann, Andy, Suttkus, Stefanie, Bär, Karl-Jürgen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8619981/
https://www.ncbi.nlm.nih.gov/pubmed/34833744
http://dx.doi.org/10.3390/s21227663
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author Schumann, Andy
Suttkus, Stefanie
Bär, Karl-Jürgen
author_facet Schumann, Andy
Suttkus, Stefanie
Bär, Karl-Jürgen
author_sort Schumann, Andy
collection PubMed
description Heart rate variability (HRV) is regularly assessed in neuroimaging studies as an indicator of autonomic, emotional or cognitive processes. In this study, we investigated the influence of a loud and cramped environment during magnetic resonance imaging (MRI) on resting HRV measures. We compared recordings during functional MRI sessions with recordings in our autonomic laboratory (LAB) in 101 healthy subjects. In the LAB, we recorded an electrocardiogram (ECG) and a photoplethysmogram (PPG) over 15 min. During resting state functional MRI, we acquired a PPG for 15 min. We assessed anxiety levels before the scanning in each subject. In 27 participants, we performed follow-up sessions to investigate a possible effect of habituation. We found a high intra-class correlation ranging between 0.775 and 0.996, indicating high consistency across conditions. We observed no systematic influence of the MRI environment on any HRV index when PPG signals were analyzed. However, SDNN and RMSSD were significantly higher when extracted from the PPG compared to the ECG. Although we found a significant correlation of anxiety and the decrease in HRV from LAB to MRI, a familiarization session did not change the HRV outcome. Our results suggest that psychological factors are less influential on the HRV outcome during MRI than the methodological choice of the cardiac signal to analyze.
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spelling pubmed-86199812021-11-27 Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment Schumann, Andy Suttkus, Stefanie Bär, Karl-Jürgen Sensors (Basel) Communication Heart rate variability (HRV) is regularly assessed in neuroimaging studies as an indicator of autonomic, emotional or cognitive processes. In this study, we investigated the influence of a loud and cramped environment during magnetic resonance imaging (MRI) on resting HRV measures. We compared recordings during functional MRI sessions with recordings in our autonomic laboratory (LAB) in 101 healthy subjects. In the LAB, we recorded an electrocardiogram (ECG) and a photoplethysmogram (PPG) over 15 min. During resting state functional MRI, we acquired a PPG for 15 min. We assessed anxiety levels before the scanning in each subject. In 27 participants, we performed follow-up sessions to investigate a possible effect of habituation. We found a high intra-class correlation ranging between 0.775 and 0.996, indicating high consistency across conditions. We observed no systematic influence of the MRI environment on any HRV index when PPG signals were analyzed. However, SDNN and RMSSD were significantly higher when extracted from the PPG compared to the ECG. Although we found a significant correlation of anxiety and the decrease in HRV from LAB to MRI, a familiarization session did not change the HRV outcome. Our results suggest that psychological factors are less influential on the HRV outcome during MRI than the methodological choice of the cardiac signal to analyze. MDPI 2021-11-18 /pmc/articles/PMC8619981/ /pubmed/34833744 http://dx.doi.org/10.3390/s21227663 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Schumann, Andy
Suttkus, Stefanie
Bär, Karl-Jürgen
Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment
title Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment
title_full Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment
title_fullStr Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment
title_full_unstemmed Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment
title_short Estimating Resting HRV during fMRI: A Comparison between Laboratory and Scanner Environment
title_sort estimating resting hrv during fmri: a comparison between laboratory and scanner environment
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8619981/
https://www.ncbi.nlm.nih.gov/pubmed/34833744
http://dx.doi.org/10.3390/s21227663
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