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BOLD

BOLD BOLD is a functional MRI method that estimates brain activity by detecting differences in the MRI signal between oxygen-rich and oxygen-poor hemoglobin.

BOLD is a functional MRI method that estimates brain activity by detecting differences in the MRI signal between oxygen-rich and oxygen-poor hemoglobin. Because these signal changes reflect metabolic activity, it is used to infer neurologic activity in the brain.

Also see

Sources

Drafting source: NCI Thesaurus. Flat export snapshot 2026-10-18. “Blood Oxygen Level-Dependent Functional MRI” (C49099).
CC-BY-4.0 · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: b27ca135beadd46c343d248135377c5077c5447fe11b93803bfab866b84fcd38

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PsychTerms (psychterms.org), CC BY 4.0, version 1. “BOLD.” Development preview.

Version 1 · SHA-256: 2474c205a7b334b4b522c306256585f4da1423edc7672835e3a460469b929c6c

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