Avtor/Urednik		Zidar, Janez
Naslov		Are segmental conduction studies of the corticospinal tract in humans feasible?
Tip		članek
Vir		Medicon 2001. 9th Mediterranean conference on medical and biological engineering and computing. 2nd Croatian-Slovenian meeting on biomedical engineering. 1st international conference on muscle fibre structure and function. 5th symposium of Croatian society for medical informatics (Medicine informatics 2001). Proccedings of the International federation for medical and biological engineering. Part 1, Part 2; 2001 Jun 12-15; Pula
Leto izdaje		2001
Obseg		str. 74-7
Jezik		eng
Abstrakt		The aim of our study was to assess feasibility of segmental corticospinal tract (CST) stimulation from the skin of the back to measure the conduction in its successive spinal segments. Conduction in the CST is now routinely measured only in rather long stretches between the motor cortex and the spinal segment, which innervates the investigated muscle. The study was performed in 8 healthy volunteers 30-03 years of age. Stimulation of the CST was attempted by conductive rubber electrodes at different levels on the back (7th cervical, 6th and 9th thoracic and 1st lumbar vertebrae) using high-voltage electrical stimulator. Responses could be evoked from the tower leg muscles in all subjects. The latencies shortened with more caudal stimulation sites and could therefore be used for calculations of conduction velocities. We were, however, unable to resolve whether the responses are mediated by the CST or also by other descending, or even by antidromic stimulation of the ascending spinal cord tracts. The accurate site of activation of these structures is also uncertain. Because of these limitations we cenclude that electrical stimulation in the back is not a reliable method for assessing segmental conduction in the CST.
Deskriptorji		PYRAMIDAL TRACTS MOTOR CORTEX ELECTRIC STIMULATION MUSCLE CONTRACTION ADULT ELECTROMYOGRAPHY MUSCLE, SKELETAL