Primary motor cortical activity during unimanual movements with increasing demand on precision
Deborah A. Barany, Kate Revill, Alexandra Caliban, Isabelle Vernon, Ashwin Shukla, K. Sathian, Cathrin M. Buetefisch
Abstract
Contralateral primary motor cortex (M1) predominantly controls unilateral hand movements, but the role of ipsilateral M1 is unclear. We used functional magnetic resonance imaging (fMRI) to investigate how M1 activity is modulated by unimanual movements at different levels of demand on precision. Our results show that task characteristics related to demand on precision influence bilateral M1 activity, suggesting that in addition to contralateral M1, ipsilateral M1 plays a key role in controlling hand movements to meet performance precision requirements.
Topics & Concepts
Functional magnetic resonance imagingJoystickPrimary motor cortexPsychologyBrain activity and meditationBlood-oxygen-level dependentMotor controlTask (project management)Computer scienceMotor cortexNeuroscienceElectroencephalographySimulationManagementStimulationEconomicsMotor Control and AdaptationTranscranial Magnetic Stimulation StudiesMuscle activation and electromyography studies