[Neurophysiologic signal recording. New technical and general practice aspects of EEG recording electrodes]

The problem of electrode selection for neurophysiological monitoring, whether for routine clinical applications or special scientific research, still remains to be resolved. In addition to the classical types of electrode-cup (silver/silver chloride or gold) or needle electrodes, new self adhesive electrodes (e.g. zipprep electrodes) for rapid application and reliable recording have recently come onto the market. However, this electrode type can lead to superficial lesions of the skin or inflammatory infiltration, which so far have not been investigated. New developments in the field of cortex electrodes and so-called active electrodes are additionally discussed.