title: Evolution of cerebral cortico-cortical communication during visuomotor adaptation to a cognitive-motor executive challenge.
abstract: Cortical dynamics were examined during a cognitive-motor adaptation task that required inhibition of a familiar motor plan. EEG coherence between the motor planning (Fz) and left hemispheric region was progressively reduced over trials (low-beta, high-beta, gamma bands) along with faster, straighter reaching movements during both planning and execution. The major reduction in coherence (delta, low/high-theta, low/high-alpha bands) between Fz and the left prefrontal region during both movement planning and execution suggests gradual disengagement of frontal executive following its initial role in the suppression of established visuomotor maps. Also, change in the directionality of phase lags (delta, high-alpha, high-beta, gamma bands) reflects a progressive shift from feedback to feedforward motor control. The reduction of cortico-cortical communication, particularly in the frontal region, and the strategic feedback/feedforward mode shift translated as higher quality motor performance. This study extends our understanding of the role of frontal executive beyond purely cognitive tasks to cognitive-motor tasks.
authors.affiliation: Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA; Graduate Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA; Maryland Robotics Center, University of Maryland, College Park, MD, USA. Electronic address: rodolphe@umd.edu.
authors.forename: Rodolphe J
authors.initials: RJ
authors.lastname: Gentili
authors.affiliation: Metron, Inc., Reston, VA, USA.
authors.forename: Trent J
authors.initials: TJ
authors.lastname: Bradberry
authors.affiliation: Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA; Graduate Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA.
authors.forename: Hyuk
authors.initials: H
authors.lastname: Oh
authors.affiliation: Graduate Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA.
authors.forename: Michelle E
authors.initials: ME
authors.lastname: Costanzo
authors.affiliation: U.S. Army Research Laboratory, 2800 Powder Mill Road, Adelphi, MD, USA.
authors.forename: Scott E
authors.initials: SE
authors.lastname: Kerick
authors.affiliation: Laboratory for Non-invasive Brain-Machine Interface Systems, Department of Electrical and Computer Engineering, University of Houston, Houston, TX, USA.
authors.forename: José L
authors.initials: JL
authors.lastname: Contreras-Vidal
authors.affiliation: Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA; Graduate Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA; Center on Aging, School of Public Health, University of Maryland, College Park, MD, USA.
authors.forename: Bradley D
authors.initials: BD
authors.lastname: Hatfield
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology*; D000328:Adult; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D003071:Cognition / Q000502:physiology; D004569:Electroencephalography; D056344:Executive Function / Q000502:physiology*; D006801:Humans; D009068:Movement / Q000502:physiology*; D009415:Nerve Net / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology*
keywords: Arm movement; Cortico-cortical communications; Electroencephalography; Frequency bands; Frontal executive; Visuomotor adaptation-learning