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I Rau

Publications and source records attributed to I Rau.

3 recordsLinked to original sources
PubMed1991

[Visually evoked P300 waves].

The event-related potentials after a competitive visual stimulation are presented. The stimulation with target stimuli results in two pronounced positive potentials in the grand-average, the P2 and the P3 component of the ERP, and a long-lasting positivity following the P3 wave. Similar but smaller potential components are elicited by non-target stimuli. Some examples of individual ERP demonstrate the high degree of inter-individual variability, as in the positive components as in the restoration of the poststimulus baseline. Some aspects of a possibly fundamental difference between visually and acoustically elicited P300 waves are demonstrated.

Acoustic Stimulation↗
PubMed1991

[Effects of dequalinium chloride and sanguinarine on the ultrastructure of early supragingival plaque].

The influence of antimicrobial mouthrinses containing dequalinium chloride or sanguinarine on early plaque formation was assessed in vivo in a clinical-experimental study. Rinses with water served as controls. After 24 and 72 hours, plastic films, which were applied to the buccal surfaces of six upper front teeth at the start of experiment, were removed and processed for transmission electron microscopic study. Dequalinium chloride or sanguinarine applied on plaque resulted in an increased and higher structured surface coating. Degenerated microorganisms were observed and the variety of bacteria seemed to be reduced. Both mouthrinses effected the early supragingival plaque formation. The effect of sanguinarine was more intensive than that of dequalinium chloride.

Adult↗