ABBRUZZESE G.

The term "motor evoked potential" (MEP) commonly refers to the action potential elicited by non-invasive (magnetic) stimulation of the motor cortex through the scalp. MEPs can be recorded using surface electromyography from all skeletal muscles and are mediated by fast-conducting cortico-motoneuronal connections projecting monosynaptically to...

Background: The ability to predict temporal outcome of body movement is abnormal in idiopathic dystonia and can be altered by cerebellar neuromodulation. Tremor in cervical dystonia might be associated with performance on motion perception tasks. Methods: A total of 15 cervical dystonia patients with and 14 without tremor and 15 age-matched...

Objectives: To investigate the effect of activation of intracortical inhibitory circuits, as tested by short interval (3 ms) paired-pulse transcranial magnetic stimulation (TMS) with a conditioning-test paradigm, on the electromyographic (EMG) pause (silent period, SP) following the motor evoked potential (MEP) in normal subjects.Methods: SPs...

TMS of the motor cortex can document abnormalities of cortico-spinal system conductivity and excitability in ALS. The motor potentials evoked (MEPs) by TMS in muscles supplied by cranial nerves have not been extensively investigated in ALS, despite the frequent impairment of the bulbar region. We recorded MEPs from the masseter muscles of 30...