fMRI hemodynamics accurately reflects neuronal timing in the human brain measured by MEG

Neuronal activation sequence information is essential for understanding brain functions. Extracting such timing information from blood oxygenation level dependent (BOLD) fMRI is confounded by interregional neurovascular differences and poorly understood relations between BOLD and electrophysiologica...

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Veröffentlicht in:NeuroImage (Orlando, Fla.) Fla.), 2013-09, Vol.78, p.372-384
Hauptverfasser: Lin, Fa-Hsuan, Witzel, Thomas, Raij, Tommi, Ahveninen, Jyrki, Wen-Kai Tsai, Kevin, Chu, Yin-Hua, Chang, Wei-Tang, Nummenmaa, Aapo, Polimeni, Jonathan R., Kuo, Wen-Jui, Hsieh, Jen-Chuen, Rosen, Bruce R., Belliveau, John W.
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container_title NeuroImage (Orlando, Fla.)
container_volume 78
creator Lin, Fa-Hsuan
Witzel, Thomas
Raij, Tommi
Ahveninen, Jyrki
Wen-Kai Tsai, Kevin
Chu, Yin-Hua
Chang, Wei-Tang
Nummenmaa, Aapo
Polimeni, Jonathan R.
Kuo, Wen-Jui
Hsieh, Jen-Chuen
Rosen, Bruce R.
Belliveau, John W.
description Neuronal activation sequence information is essential for understanding brain functions. Extracting such timing information from blood oxygenation level dependent (BOLD) fMRI is confounded by interregional neurovascular differences and poorly understood relations between BOLD and electrophysiological response delays. Here, we recorded whole-head BOLD fMRI at 100ms resolution and magnetoencephalography (MEG) during a visuomotor reaction-time task. Both methods detected the same activation sequence across five regions, from visual towards motor cortices, with linearly correlated interregional BOLD and MEG response delays. The smallest significant interregional BOLD delay was 100ms; all delays ≥400ms were significant. Switching the order of external events reversed the sequence of BOLD activations, indicating that interregional neurovascular differences did not confound the results. This may open new avenues for using fMRI to follow rapid activation sequences in the brain. •fMRI at 100ms resolution and MEG were recorded in a visuomotor reaction-time task.•Interregional BOLD and MEG response delays are linearly correlated.•The smallest significant interregional BOLD delay was 100ms.•All BOLD delays ≥400ms were significant.•Switching the order of external events reversed the sequence of BOLD activations.
doi_str_mv 10.1016/j.neuroimage.2013.04.017
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subjects Adult
Biological and medical sciences
BOLD
Brain - physiology
Brain Mapping
Brain research
Electroencephalography
Experiments
Female
Fundamental and applied biological sciences. Psychology
Hemodynamics
Hemodynamics - physiology
Humans
Image Processing, Computer-Assisted
Inverse imaging
Latency
Magnetic Resonance Imaging
Magnetoencephalography
Male
Medical research
Neuronal timing
Neurons - physiology
Neurovascular coupling
Photic Stimulation
Reaction Time - physiology
Studies
Vertebrates: nervous system and sense organs
Young Adult
title fMRI hemodynamics accurately reflects neuronal timing in the human brain measured by MEG
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