fMRI at ultra-high field: From acquisition to interpretation.

Ultra-high-field (≥7 Tesla) fMRI enables submillimeter imaging of cortical layers and small brain structures, revealing detailed intracortical circuits and processing mechanisms.

• Why it matters: Understanding brain function at such fine spatial scales is crucial for deciphering neural circuitry, but traditional analysis tools struggle with the complex, high-resolution data, making interpretation challenging.
• What they did: The authors review applications of 7T fMRI, discuss data acquisition and processing challenges, and examine how increased resolution impacts interpretation, especially regarding neurovascular coupling in cortical layers.
• The result: This work highlights the potential of UHF fMRI to advance neuroscience research by providing detailed insights into brain microstructure, while emphasizing the need for refined analysis methods to accurately interpret the data.