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We created a new imaging modality for the nonhuman primate, mesoscopic electrophysiology, or MePhys by sampling local field potentials (LFPs) in a dense three-dimensional grid from across the volume of one entire hemisphere. MePhys combines the millisecond temporal resolution of electrophysiology with the large field of view and millimeter spatial resolution of functional magnetic resonance imaging (fMRI). MePhys' unique profile of strengths and limitations makes it an ideal imaging method for the nonhuman primate brain observatories of the future.
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Teichert et al. (2025) studied this question.
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