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A method for quantitative assessment of the microbial density on the mucous membranes in the oral and pharyngeal cavities is described. The results of the assessment are in agreement with the theoretical assumption based on the existence of a natural electrostatic filter. The highest density of microbes is on the tonsils where the positive pole of the filter is situated, so that a synergism between the defensive immunological role of the tonsils and the bioelectric potential pattern is obvious. The microbial densities in the oral cavity are more or less interdependent whereas the findings on the pharynx rear wall are isolated being probably perturbed by repeated swallowing.

The authors investigate the semantic patterns of patients who after a myocardial infarction are taking part in a long-term rehabilitation program. By means of a specially constructed semantic differential they measure and factor-analyze the attitudes of 50 male patients towards 15 clinico-medical concepts. Data from 60 healthy female controls yielded almost identical factor loadings for the stimulus terms, describing obviously the same perceptual structure having a strong temporal component. The spatial clustering of the concept reveals minor particularities which are specific for the view of the postinfarctional patients.