(UL)
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Potencial pripravljenosti pri ekstenziji kazalca in mežikanju : magistrsko deloKorošec, 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 deloZaložništvo in izdelava - Ljubljana : [M. Korošec], 2000Jezik - slovenskiCOBISS.SI-ID - 2187540
Avtor
Korošec, Marko, 1971-
Drugi avtorji
Trontelj, Jože, 1939-2013 |
Pirtošek, Zvezdan, 1956-
Teme
Contingent negative variation |
Blinking |
Physiology |
Muscle contraction |
Physiology |
Naključna negativna variacija |
Mežikalni refleks |
Fiziologija |
Mišična kontrakcija |
Fiziologija |
fiziologija |
nevro-znanosti
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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. |
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Korošec, Marko, 1971- | 19207 |
Trontelj, Jože, 1939-2013 | 00341 |
Pirtošek, Zvezdan, 1956- | 05380 |
Vir: Osebne bibliografije
in: SICRIS
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