Human upper extremity motor cortex activity shows distinct oscillatory signatures for stereotyped arm and leg movements

ABSTRACT:

Introduction

Stepping and arm swing are stereotyped movements that require coordination across multiple muscle groups. It is not known whether the encoding of these stereotyped movements in the human primary motor cortex is confined to the limbs’ respective somatotopy.

Methods

We recorded subdural electrocorticography activities from the hand/arm area in the primary motor cortex of 6 subjects undergoing deep brain stimulation surgery for essential tremor and Parkinson’s disease who performed stepping (all patients) and arm swing (n = 3 patients) tasks.

Results

We show stepping-related low frequency oscillations over the arm area. Furthermore, we show that this oscillatory activity is separable, both in frequency and spatial domains, from gamma band activity chang

SUBMITTER: Starkweather C 

PROVIDER: S-EPMC10449648 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature