Spatial and spectral changes in cortical surface potentials during pinching versusthumb and index finger flexion.

ABSTRACT: Electrocorticographic (ECoG) signals provide high-fidelity representations of sensorimotor cortex activation during contralateral hand movements. Understanding the relationship between independent and coordinated finger movements along with their corresponding ECoG signals is crucial for precise brain mapping and neural prosthetic development. We analyzed subdural ECoG signals from three adult epilepsy patients with subdural electrode arrays implanted for seizure foci identification. Patients performed a cue-based task consisting of thumb flexion, index finger flexion or a pinching movement of both fingers together. Broadband power changes were estimated using principal component analysis of the power spectrum. All patients showed significant increases in broadband power during each moveme

SUBMITTER: Kerezoudis P 

PROVIDER: S-EPMC12152729 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature