NORTON, Jonathan A, WOOD, Duncan E, and DAY, Brian L
Neurology, Neurologie, Sciences biologiques et medicales, Biological and medical sciences, Sciences medicales, Medical sciences, Neurologie, Neurology, Mouvement involontaire, Involuntary movement, Movimiento involuntario, Système nerveux central, Central nervous system, Sistema nervioso central, Trouble neurologique, Neurological disorder, Trastorno neurológico, Générateur, Generator, Generador, Moelle épinière, Spinal cord, Médula espinal, Système nerveux pathologie, Nervous system diseases, Sistema nervioso patología, Tremblement, Tremor, and Temblor
Primary orthostatic tremor is characterized by 16-Hz motor activity that is coherent between muscles. It has been suggested that this tremor originates in the brain. This view is questioned by findings from a patient with complete paraplegia who experiences intermittent leg spasms at rest. The EMG activity within the spasms showed a 16-Hz component that was coherent between muscles unilaterally and bilaterally. This raises the possibility that the spinal cord could be the source of orthostatic tremor.