DIKUL - logo
(UL)
  • Potencial pripravljenosti pri ekstenziji kazalca in mežikanju : magistrsko delo
    Korošec, Marko, 1971-
    Bereitschaftspotential (BP) or readiness potential belongs to the group of movement-related cortical potentials, which occur before, during or after the motor activity. With BP we studied the central ... neuronal mechanisms involved inpreparation and initiation of voluntary blinking in 31 normal subjects and 6patients with blepharospasm. Our hypothesis was that in normal subjects thereis a slowly rising BP-related electroencephalographic negativity also before voluntary blinking. Our aim was to compare the BP of voluntary blinking(BPblink) with a classical BP elicited by index finger extensionč to define reference values for BPblink latency and amplitudeč and to describe thetopography of BPblink. As patients with extrapyramidal diseases often present with an impairment of eye movements and blinking, we performed recordings also in a group of patients with blepharospasm. Our results confirmed the presence of blink-related BP in normal subjects. Both BPblink and BPhand consisted of an early and a late component and had a similar onset-latency and the highest amplitude over the vertex. However, compared to BPhand the absolute amplitude of BPblink was lower and it did not show lateralization. Our results showed a high variability in BPblink and in BPhandlatencies and amplitudes, making a set-up of reference values impractical. In a group of six patients with blepharospasm, BPhand was found in all of the patients and BPblink in only one. Possible reasons for absent BPblink in our patients with blepharospasm include a disease-related impairment of mechanism for voluntary blink preparation and execution as well as inadequacies of recording technique (insufficiently defined electromyographic activityč contamination of records with artefacts). (Abstract truncated at 2000 characters.)
    Vrsta gradiva - magistrsko delo
    Založništvo in izdelava - Ljubljana : [M. Korošec], 2000
    Jezik - slovenski
    COBISS.SI-ID - 2187540

Knjižnica Signatura – lokacija, inventarna št. ... Status izvoda
MF, Centralna medicinska knjižnica, Ljubljana magistrske naloge
KOROŠEC Marko Potencial
IN: 020000900 		prosto - na dom, čas izposoje: 1 mes.
loading ...
loading ...
loading ...

Vnos na polico