Influence of different transcranial magnetic stimulation current directions on the corticomotor control of lumbar erector spinae muscles during a static task
Mikaël Desmons, Antoine Rohel, Amélie Desgagnés, Catherine Mercier, Hugo Massé‐Alarie
Abstract
For the first time, anteroposterior and posteroanterior induced electric currents in the brain were compared when targeting back muscle representation with transcranial magnetic stimulation. The use of the anteroposterior current resulted in later response latency, larger inhibition probed by paired-pulse stimulation, and higher motor threshold. These important differences between current directions suggest that each of the current directions may recruit specific cortical circuits involved in the control of back muscles, similar to that for hand muscles.
Topics & Concepts
Transcranial magnetic stimulationMotor cortexNeurosciencePrimary motor cortexPsychologyExcitatory postsynaptic potentialPremotor cortexLumbarInhibitory postsynaptic potentialStimulationMedicineDorsumAnatomyTranscranial Magnetic Stimulation StudiesMotor Control and AdaptationMuscle activation and electromyography studies