Hemispheric asymmetry of ipsilateral motor cortex activation during unimanual motor tasks: further evidence for motor dominance

• Published in: Clinical neurophysiology Vol. 112; no. 1; pp. 107 - 113
• Main Authors: Ziemann, Ulf, Hallett, Mark
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier Ireland Ltd 2001; Elsevier Science
• Subjects: Adult; Biological and medical sciences; Dominance, Cerebral - physiology; Electromagnetic Fields; Electromyography; Female; Fundamental and applied biological sciences. Psychology; Hand - innervation; Hand - physiology; Humans; Inter-hemispheric inhibition; Ipsilateral motor cortex; Magnetoencephalography; Male; Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration; Motor Cortex - physiology; Motor dominance; Motor evoked potentials; Motor Neurons - physiology; Psychomotor Performance - physiology; Spinal Cord - physiology; Transcranial magnetic stimulation; Vertebrates: nervous system and sense organs; Ipsilateral motor cortex; Inter-hemispheric inhibition; Motor dominance; Transcranial magnetic stimulation; Motor evoked potentials; Human; Motor pathway; Central nervous system; Excitability; Motor neuron; Motor control; Manual task; Asymmetry; Hemisphere dominance; Motor cortex; Body movement; Magnetic stimulus; Upper limb; Motor evoked potential; Inhibition; Laterality; Brain (vertebrata)

Objectives: To test to which extent the increase in ipsilateral motor cortex excitability during unimanual motor tasks shows hemispheric asymmetry. Methods: Six right-handed healthy subjects performed one of several motor tasks of different complexity (including rest) with one hand (task hand) while...