Source 1review2017NeuroImage
Toolkit/BOLD fMRI
BOLD fMRI
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
The supplied review summary explicitly emphasizes BOLD as a central comparison contrast in the review's discussion of layer-specific fMRI.
Usefulness & Problems
Why this is useful
BOLD fMRI provides a brain-wide, non-invasive readout of hemodynamic responses in functional neuroimaging experiments. In this review it is the whole-brain imaging component of the multimodal setup.; brain-wide non-invasive functional neuroimaging; hemodynamic readout during multimodal neural circuit studies; BOLD fMRI reports blood-oxygenation-related signal changes during neural activity. In the supplied review context, it is used as a key comparator for layer-specific imaging methods.; functional MRI readout of hemodynamic activity; comparison baseline for laminar specificity discussions
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BOLD fMRI provides a brain-wide, non-invasive readout of hemodynamic responses in functional neuroimaging experiments. In this review it is the whole-brain imaging component of the multimodal setup.
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brain-wide non-invasive functional neuroimaging
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hemodynamic readout during multimodal neural circuit studies
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BOLD fMRI reports blood-oxygenation-related signal changes during neural activity. In the supplied review context, it is used as a key comparator for layer-specific imaging methods.
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functional MRI readout of hemodynamic activity
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comparison baseline for laminar specificity discussions
Problem solved
It enables non-invasive monitoring of brain networks at whole-brain scale. This makes it useful for linking local circuit manipulations to distributed network responses.; provides non-invasive brain-wide reading of hemodynamic responses; It enables noninvasive functional imaging of activity-linked hemodynamic responses.; provides a standard functional imaging contrast for neurophysiological studies
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It enables non-invasive monitoring of brain networks at whole-brain scale. This makes it useful for linking local circuit manipulations to distributed network responses.
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provides non-invasive brain-wide reading of hemodynamic responses
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It enables noninvasive functional imaging of activity-linked hemodynamic responses.
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provides a standard functional imaging contrast for neurophysiological studies
Problem links
provides a standard functional imaging contrast for neurophysiological studies
LiteratureIt enables noninvasive functional imaging of activity-linked hemodynamic responses.
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It enables noninvasive functional imaging of activity-linked hemodynamic responses.
provides non-invasive brain-wide reading of hemodynamic responses
LiteratureIt enables non-invasive monitoring of brain networks at whole-brain scale. This makes it useful for linking local circuit manipulations to distributed network responses.
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It enables non-invasive monitoring of brain networks at whole-brain scale. This makes it useful for linking local circuit manipulations to distributed network responses.
Published Workflows
Objective: Integrate whole-brain BOLD fMRI with direct optical calcium readout and optogenetic circuit control in a single small-animal experiment.
Why it works: The workflow combines complementary modalities: BOLD fMRI supplies non-invasive brain-wide hemodynamic information, while optical calcium recording provides a more direct neural activity readout, and optogenetic control enables circuit manipulation.
hemodynamic response measurementcalcium-dependent optical reportingoptogenetic neuronal circuit manipulationBOLD fMRIfiber-optic calcium recordingoptogenetic stimulation
Stages
- 1.MR-compatible multimodal setup configuration(library_build)
The abstract explicitly highlights MR coil configuration and integration of optical recordings and optogenetic manipulation into fMRI experiments.
Selection: Configure MR coil setup and compatible optical/optogenetic components for simultaneous acquisition and stimulation.
- 2.Component choice for stimulation and recording(library_design)
The review explicitly notes choice and usage of opsins and calcium sensors as practical considerations before running the multimodal experiment.
Selection: Choose opsins and chemically or genetically encoded calcium sensors appropriate for the multimodal experiment.
- 3.Implantation and stimulation parameter setup(functional_characterization)
The abstract explicitly lists fiber implantation and appropriate light power for stimulation as setup details needed for the multimodal approach.
Selection: Implement fiber implantation and set appropriate light power for stimulation.
- 4.Simultaneous multimodal acquisition(confirmatory_validation)
This is the practical demonstration stage where the integrated setup is used to obtain simultaneous BOLD and calcium data under optogenetic control.
Selection: Acquire BOLD fMRI and calcium recordings under optogenetic control in the integrated setup.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Techniques
Functional AssayTarget processes
No target processes tagged yet.
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
The abstract explicitly places the method in a 9.4-T small animal MR scanner and mentions MR coil configuration. It therefore requires MRI hardware and compatible experimental integration.; requires MRI instrumentation; in the practical example, uses a 9.4-T small animal MR scanner; It requires standard fMRI acquisition and analysis. The supplied evidence does not provide more specific implementation details.; requires fMRI acquisition and interpretation in the context of vascular signal contributions
The abstract states that BOLD is only an indirect measure of neural activity. Direct neural responses require electrophysiological or optical methods.; only an indirect measure of neural activity; In the supplied review summary, it is not presented as the most spatially specific option for laminar activity mapping.; the supplied summary frames it as less specific than CBV-weighted approaches for laminar mapping
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
The supplied review materials present VASO as a noninvasive CBV-sensitive alternative related to layer-specific fMRI and human translation.
The supplied review materials describe line-scanning fMRI as a high spatiotemporal-resolution approach for early laminar BOLD dynamics.
The supplied review materials frame CBV-weighted fMRI as a higher-specificity contrast for laminar activity mapping than BOLD-oriented approaches.
The supplied review materials mention CLARITY as a method for relating CBV-weighted signal spread to microvascular architecture.
Approval Evidence
2 sources3 linked approval claimsfirst-pass slug bold-fmri
The supplied review summary explicitly emphasizes BOLD as a central comparison contrast in the review's discussion of layer-specific fMRI.
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While BOLD fMRI provides brain-wide non-invasive reading of the hemodynamic response, it is only an indirect measure of neural activity.
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method comparisonsupports
The supplied review materials frame CBV-weighted fMRI as a higher-specificity contrast for laminar activity mapping than BOLD-oriented approaches.
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method scopesupports
BOLD fMRI provides brain-wide non-invasive hemodynamic readout but is an indirect measure of neural activity.
While BOLD fMRI provides brain-wide non-invasive reading of the hemodynamic response, it is only an indirect measure of neural activity.
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practical examplesupports
The review describes a multimodal setup combining BOLD fMRI in a 9.4-T small animal MR scanner with in vivo fiber-optic calcium recordings and optogenetic control in rat.
As a practical example, we describe how BOLD fMRI in a 9.4-T small animal MR scanner can be combined with in vivo fiber-optic calcium recordings and optogenetic control in a multimodal setup. We present simultaneous BOLD fMRI and calcium recordings under optogenetic control in rat.
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Comparisons
Source-stated alternatives
The abstract contrasts BOLD fMRI with electrophysiological and optical methods for direct observation of neural responses. In the reviewed setup, it is paired with fiber-optic calcium recording rather than replaced.; The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
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The abstract contrasts BOLD fMRI with electrophysiological and optical methods for direct observation of neural responses. In the reviewed setup, it is paired with fiber-optic calcium recording rather than replaced.
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The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
Source-backed strengths
brain-wide readout; non-invasive functional neuroimaging; serves as a widely used comparison method in laminar fMRI discussions
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brain-wide readout
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non-invasive functional neuroimaging
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serves as a widely used comparison method in laminar fMRI discussions
Compared with CBV-weighted fMRI
The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
Shared frame: source-stated alternative in extracted literature
Strengths here: brain-wide readout; non-invasive functional neuroimaging; serves as a widely used comparison method in laminar fMRI discussions.
Relative tradeoffs: only an indirect measure of neural activity; the supplied summary frames it as less specific than CBV-weighted approaches for laminar mapping.
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The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
Compared with functional magnetic resonance imaging
The abstract contrasts BOLD fMRI with electrophysiological and optical methods for direct observation of neural responses. In the reviewed setup, it is paired with fiber-optic calcium recording rather than replaced.; The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
Shared frame: source-stated alternative in extracted literature
Strengths here: brain-wide readout; non-invasive functional neuroimaging; serves as a widely used comparison method in laminar fMRI discussions.
Relative tradeoffs: only an indirect measure of neural activity; the supplied summary frames it as less specific than CBV-weighted approaches for laminar mapping.
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The abstract contrasts BOLD fMRI with electrophysiological and optical methods for direct observation of neural responses. In the reviewed setup, it is paired with fiber-optic calcium recording rather than replaced.
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The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
Compared with VASO
The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
Shared frame: source-stated alternative in extracted literature
Strengths here: brain-wide readout; non-invasive functional neuroimaging; serves as a widely used comparison method in laminar fMRI discussions.
Relative tradeoffs: only an indirect measure of neural activity; the supplied summary frames it as less specific than CBV-weighted approaches for laminar mapping.
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The supplied materials explicitly contrast BOLD with CBV-weighted fMRI and mention VASO as another related approach.
Ranked Citations
- 1.