Naslov
Electrode characteristics at high current pulse stimulation

Autori
Paćelat, Elvis ; Magjarević, Ratko ; Išgum, Velimir

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

Izvornik
Proceedings of VIII Mediterranean Conference on Medical and Biological Engineering and Computing, Medicon' 98 / Christofides, Stelios - Limassol : The Cyprus Association of Medical Physics and Biomedical Eng., 1998, CD-ROM

Skup
VIII Mediterranean Conference on Medical and Biological Engineering and Computing, Medicon' 98

Mjesto i datum
Limassol, Cipar, 14.06.1998. - 17.06.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Transcranial Electrical Stimulation; Electrode – skin Interface; Bioimpedance

Sažetak
In contrast to peripheral nerves or open cortex stimulation where brief and weak stimuli are successful, the activation of the brain motor area during general anaesthesia in cases with the intact patient’s head, very strong electrical stimulation pulses are needed. It is mostly because of the high scull and scalp impedance and therefore only about 10% of total stimulating current pass this barrier and effectively activate the neurones. In order to enable selective neural stimulation, small area electrodes are used. In this paper, the influence of pulse current stimuli parameters on the characteristics of cup EEG and corc screw at high current densities are investigated. The cup electrodes, in contrast to the corc screw electrodes, showed nonlinear properties, i.e. a significant increase in pulse voltage to current ratio at high current densities.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA