Naslov
Influence of the blink reflex to motor evoked responses of facial muscles in man

Autori
Liščić, Rajka M. ; Zidar, Janez

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
9th European Congress of Clinical Neurophysiology / Stalberg, Erik V ; De Weerd, Al W ; Zidar, Janez - Bolonja : Monduzzi Editore, 1998, 137-142

Skup
9th European Congress of Clinical Nurophysiology

Mjesto i datum
Ljubljana, Slovenija, 04.06.1998. - 07.06.1998

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
transcranial magnetic stimulation; blink reflex

Sažetak
During transcranial magnetic stimulation (TMS) the round coil covers a larg area of the skull and can possibly excite also the trigeminal sensory afferents which can in turn trigger the blink reflex. The ipsilateral R1 component of the blink reflex may sum up with the ipsilateral responses of the facial muscles taht arise from motor cortex stimulation. Both of them namely appear with rather similar latencies. To investigate this possibility we examined 11 healthy subjects. Electromyographyc responses of the orbicularis oris (OR) and orbicularis oculi (OC) muscles were studied after the supraorbital and TMS stimulations before and after lidocain blocks of the before mentioned nerves. Following TMS the ipsilateral OR muscle responses occurred in 5 subjects and persisted after the lidocaine blocks. They may therefore represent activity in the corticobulbsr projection to this muscle and can be taken as an evidence of its bilateral cortical representation. ipsilateral responses of the OC muscles could, on the other hand, be diminished or obstructed by the supraorbital nerve blocks. they may at least partially be due also to the reflex activation of the lower facial muscles.

Izvorni jezik
Engleski

Znanstvena područja
Javno zdravstvo i zdravstvena zaštita

POVEZANOST RADA