Movement related directional tuning from broadband electrocorticography in humans

Abstract

© 2015 IEEE. Directional tuning is the tendency for cortical neurons to exhibit a peak firing rate when a limb is moved in a preferred direction. This phenomenon has been used to underpin decoding strategies in many brain-machine interface (BMI) systems. Although it is well established that individual motor neurons can be decoded using directional tuning, this is not as well understood at the scale of cortical local field potentials (LFPs). This study investigates the directional tuning properties of broadband electrocorticography (ECoG) recorded during a center-out task from two human participants. Selected bipolar ECoG channels demonstrated directional tuning in signal power from 85 - 250 ..