دورية أكاديمية
Tracking brain arousal fluctuations with fMRI.
| العنوان: | Tracking brain arousal fluctuations with fMRI. |
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| المؤلفون: | Chang C; Advanced Magnetic Resonance Imaging Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892; catie.chang@nih.gov., Leopold DA; Section on Cognitive Neurophysiology and Imaging, Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892; Neurophysiology Imaging Facility, National Institute of Mental Health, National Institute of Neurological Disorders and Stroke, and National Eye Institute, National Institutes of Health, Bethesda, MD 20892;, Schölvinck ML; Ernst Strüngmann Institute for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt am Main, Germany;, Mandelkow H; Advanced Magnetic Resonance Imaging Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892;, Picchioni D; Advanced Magnetic Resonance Imaging Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892;, Liu X; Advanced Magnetic Resonance Imaging Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892;, Ye FQ; Neurophysiology Imaging Facility, National Institute of Mental Health, National Institute of Neurological Disorders and Stroke, and National Eye Institute, National Institutes of Health, Bethesda, MD 20892;, Turchi JN; Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892., Duyn JH; Advanced Magnetic Resonance Imaging Section, Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892; |
| المصدر: | Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2016 Apr 19; Vol. 113 (16), pp. 4518-23. Date of Electronic Publication: 2016 Apr 05. |
| نوع المنشور: | Journal Article; Research Support, N.I.H., Intramural |
| اللغة: | English |
| بيانات الدورية: | Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, DC : National Academy of Sciences |
| مواضيع طبية MeSH: | Arousal/*physiology , Brain/*physiology , Brain Waves/*physiology , Synaptic Transmission/*physiology, Animals ; Brain/diagnostic imaging ; Macaca ; Magnetic Resonance Imaging ; Radiography |
| مستخلص: | Changes in brain activity accompanying shifts in vigilance and arousal can interfere with the study of other intrinsic and task-evoked characteristics of brain function. However, the difficulty of tracking and modeling the arousal state during functional MRI (fMRI) typically precludes the assessment of arousal-dependent influences on fMRI signals. Here we combine fMRI, electrophysiology, and the monitoring of eyelid behavior to demonstrate an approach for tracking continuous variations in arousal level from fMRI data. We first characterize the spatial distribution of fMRI signal fluctuations that track a measure of behavioral arousal; taking this pattern as a template, and using the local field potential as a simultaneous and independent measure of cortical activity, we observe that the time-varying expression level of this template in fMRI data provides a close approximation of electrophysiological arousal. We discuss the potential benefit of these findings for increasing the sensitivity of fMRI as a cognitive and clinical biomarker. |
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| معلومات مُعتمدة: | United States Intramural NIH HHS |
| فهرسة مساهمة: | Keywords: arousal; electrophysiology; resting-state fMRI; spontaneous fluctuations |
| تواريخ الأحداث: | Date Created: 20160407 Date Completed: 20160902 Latest Revision: 20181113 |
| رمز التحديث: | 20221213 |
| مُعرف محوري في PubMed: | PMC4843437 |
| DOI: | 10.1073/pnas.1520613113 |
| PMID: | 27051064 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1091-6490 |
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| DOI: | 10.1073/pnas.1520613113 |