The article is aimed at familiarizing medical specialists involved in registration and analysis of electroencephalographic (EEG) examinations with the basic principles operation design a modern EEG recorder. Understanding technical fundamentals behind equipment should help personnel to correctly use all its capabilities ultimately improve quality care. diagram electroencephalograph operation, t...

We measured the bioelectric properties of 14 cystic fibrosis (CF) and 33 non-CF human fetal tracheal xenografts in severe combined immunodeficiency (SCID) mice. All xenografts exhibited a mature airway-type epithelium irrespective of their gestational age, duration of engraftment, and genotype. The in vivo potential difference and the in vitro baseline short-circuit current ( I sc) were signifi...

Analyzing signal and noise for any sensory system requires an appreciation of the biological and physical milieu of the animal. Behavioral studies show that elasmobranchs use their electrosensory systems extensively for prey detection, but also for mate recognition and possibly for navigation. These biologically important signals are detected against a background of self-generated bioelectric f...

We have succeeded in the isolation, culture and morphological characterization of Rana ridibunda stomach enteric plexuses. We have furthermore obtained intra and extracellular bioelectric recordings from the explants in culture. The culture medium used (Eagle MEM), the collagenase digestion and the general culture conditions followed are similar to those applied to mammal enteric plexus explant...

in recent years the conversion of mechanical to electrical energy by bone and many other connective tissues, rather like a piezoelectric effect, has been substantiated by a number of investigations (Bassett l971a and b). Furthermore, streaming potentials have been observed in these several tissues. Hypothetically, these bioelectric phenomena may be involved in regulating the architecture of con...