The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.
Coupling Mechanism and Significance of the BOLD Signal: A Status Report
Open accessAbstract
Functional magnetic resonance imaging (fMRI) provides a unique view of the working human mind. The blood-oxygen-level-dependent (BOLD) signal, detected in fMRI, reflects changes in deoxyhemoglobin driven by localized changes in brain blood flow and blood oxygenation, which are coupled to underlying neuronal activity by a process termed neurovascular coupling. Over the past 10 years, a range of cellular mechanisms, including astrocytes, pericytes, and interneurons, have been proposed to play a role in functional neurovascular coupling. However, the field remains conflicted over the relative importance of each process, while key spatiotemporal features of BOLD response remain unexplained. Here, we review current candidate neurovascular coupling mechanisms and propose that previously overlooked involvement of the vascular endothelium may provide a more complete picture of how blood flow is controlled in the brain. We also explore the possibility and consequences of conditions in which neurovascular coupling may be altered, including during postnatal development, pathological states, and aging, noting relevance to both stimulus-evoked and resting-state fMRI studies.
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Metadata
- Authors
- Hillman, E. M. C.
- Venue
- Annual Review of Neuroscience
- Publisher
- Annual Reviews
- Published
- 2014-07-08
- Volume
- 37
- Issue
- 1
- Pages
- 161-181
- ISSN
- 0147-006X (ISSN-L)
- 1545-4126
- OpenAlex
- W2135780113
- Cited by
- 610
- References
- 18
- FWCI
- 5.67
- Type
- journal article
- Language
- en
- Open access
- bronze
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