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Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI
This study aimed to investigate the pharmacological effect of caffeine on functional connectivity measured by resting-state blood oxygenation level-dependent (BOLD) MRI in the motor cortex, visual cortex and default mode network (DMN). The protocols and procedures of the study were reviewed and appr...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BlackWell Publishing Ltd
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4260672/ https://www.ncbi.nlm.nih.gov/pubmed/24478235 http://dx.doi.org/10.1002/nbm.3080 |
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author | Wu, Wen-Chau Lien, Shu-Hua Chang, Jia-Horng Yang, Shun-Chung |
author_facet | Wu, Wen-Chau Lien, Shu-Hua Chang, Jia-Horng Yang, Shun-Chung |
author_sort | Wu, Wen-Chau |
collection | PubMed |
description | This study aimed to investigate the pharmacological effect of caffeine on functional connectivity measured by resting-state blood oxygenation level-dependent (BOLD) MRI in the motor cortex, visual cortex and default mode network (DMN). The protocols and procedures of the study were reviewed and approved by the Institutional Review Board of our institution. On a 3-T clinical MR system, 20 healthy volunteers underwent imaging before and after oral ingestion of a 200-mg over-the-counter caffeine pill (data from three individuals were excluded from further analysis because of excessive motion). The demographics of the remaining participants were as follows: female/male, 8/9; age, 21–35 years; non-habitual caffeine consumers over the past 6 months. Functional connectivity was calculated using the general linear model, assessed in terms of connected area (voxels) and statistical significance (Student t-values), and correlated with changes in regional cerebral blood flow as measured by arterial spin labeling MRI. Per-subject data analysis showed that caffeine decreased functional connectivity in the motor/visual cortices, but its effects on DMN varied among subjects. Correlation analysis of the changes in functional connectivity and regional blood flow suggested that the effect of caffeine on BOLD functional connectivity was predominantly neural (motor/visual cortices) and partly vascular (DMN). Group analysis showed that, after caffeine ingestion, DMN involved more attentional networks, and more extrastriate areas were integrated into the functional connectivity of the visual cortex, which may be associated with the known pharmacological effect of caffeine in elevating alertness. Caffeine consumption should thus be considered in the experimental design and data interpretation of functional connectivity studies using resting-state BOLD MRI. |
format | Online Article Text |
id | pubmed-4260672 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | BlackWell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-42606722014-12-15 Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI Wu, Wen-Chau Lien, Shu-Hua Chang, Jia-Horng Yang, Shun-Chung NMR Biomed Research Articles This study aimed to investigate the pharmacological effect of caffeine on functional connectivity measured by resting-state blood oxygenation level-dependent (BOLD) MRI in the motor cortex, visual cortex and default mode network (DMN). The protocols and procedures of the study were reviewed and approved by the Institutional Review Board of our institution. On a 3-T clinical MR system, 20 healthy volunteers underwent imaging before and after oral ingestion of a 200-mg over-the-counter caffeine pill (data from three individuals were excluded from further analysis because of excessive motion). The demographics of the remaining participants were as follows: female/male, 8/9; age, 21–35 years; non-habitual caffeine consumers over the past 6 months. Functional connectivity was calculated using the general linear model, assessed in terms of connected area (voxels) and statistical significance (Student t-values), and correlated with changes in regional cerebral blood flow as measured by arterial spin labeling MRI. Per-subject data analysis showed that caffeine decreased functional connectivity in the motor/visual cortices, but its effects on DMN varied among subjects. Correlation analysis of the changes in functional connectivity and regional blood flow suggested that the effect of caffeine on BOLD functional connectivity was predominantly neural (motor/visual cortices) and partly vascular (DMN). Group analysis showed that, after caffeine ingestion, DMN involved more attentional networks, and more extrastriate areas were integrated into the functional connectivity of the visual cortex, which may be associated with the known pharmacological effect of caffeine in elevating alertness. Caffeine consumption should thus be considered in the experimental design and data interpretation of functional connectivity studies using resting-state BOLD MRI. BlackWell Publishing Ltd 2014-04 2014-01-30 /pmc/articles/PMC4260672/ /pubmed/24478235 http://dx.doi.org/10.1002/nbm.3080 Text en © 2014 The Authors. NMR in Biomedicine published by John Wiley & Sons, Ltd. http://creativecommons.org/licenses/by-nc/3.0/ This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | Research Articles Wu, Wen-Chau Lien, Shu-Hua Chang, Jia-Horng Yang, Shun-Chung Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI |
title | Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI |
title_full | Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI |
title_fullStr | Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI |
title_full_unstemmed | Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI |
title_short | Caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent MRI |
title_sort | caffeine alters resting-state functional connectivity measured by blood oxygenation level-dependent mri |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4260672/ https://www.ncbi.nlm.nih.gov/pubmed/24478235 http://dx.doi.org/10.1002/nbm.3080 |
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