title: Properties of primary motor cortical local field potentials in the leg and trunk representations during arm movements.
abstract: Large, spatially-distributed populations of motor cortical neurons are recruited during upper limb movements. Here, we examined how beta attenuation, a mesoscopic reflection of unit engagement, varies across a spatially expansive sampling of primary motor cortex in a non-human primate (macaca mulatta). We found that electrodes in both the trunk and leg representation of motor cortex exhibit qualitatively similar behavior to electrodes in the arm representation during a planar reaching task, despite the fact that there were no overt movements of the trunk or leg. These findings are interpreted in the context of a state-based brain machine interface.
authors.forename: Adil A
authors.initials: AA
authors.lastname: Tobaa
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Best
authors.forename: Karthikeyan
authors.initials: K
authors.lastname: Balasubramanian
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Takahashi
authors.forename: Nicholas G
authors.initials: NG
authors.lastname: Hatsopoulos
mesh_terms: D000818:Animals; D001132:Arm; D007866:Leg; D008253:Macaca mulatta; D009044:Motor Cortex; D009046:Motor Neurons; D009068:Movement; D009474:Neurons; D011597:Psychomotor Performance; D060726:Torso