meg

Definition

Magnetoencephalography: a non-invasive recording of the faint magnetic fields produced by neuronal currents, picked up by sensors placed outside the head. Its selling point is millisecond time resolution, which makes it the tool of choice for tracking how a stimulus is transformed over time. Compared with fMRI, which follows blood flow, MEG trades spatial precision for temporal precision.

Explainers using this term

• Paper Walkthrough: Interpretable MEG Decoding of Perceived Speech — Reading the Decoder's Weights as a Brain MapInterpretable MEG Decoding of Perceived Speech: Cortical Sources and the Stimulus Features That Drive Retrieval