[Cutaneous mechanism of the temperature sensitivity of ampulla of Lorenzini electroreceptors].
In acute experiments on Black Sea skates Raja clavata the potential difference across the sensory epithelium and across the skin as well as the impulse activity of single electro-receptors were studied during thermal stimulation of pores of the ampullae of Lorenzini. Heating of the skin near the pore caused a positive potential shift inside the ampullary canal and across the skin (outside with respect to inside) and inhibition of the impulse activity. Cooling of the skin resulted in the opposite effects. Biological significance of the skin mechanism of thermal sensitivity of the ampullae of Lorenzini is discussed.
D000818:Animals; D004560:Electricity; D004594:Electrophysiology; D005399:Fishes / Q000502:physiology*; D008433:Mathematics; D011984:Sensory Receptor Cells / Q000502:physiology*; D012879:Skin Physiological Phenomena; D013696:Temperature
Kozhnyĭ mekhanizm temperaturnoĭ chuvstvitel'nosti élektroretseptorov ampul Lorentsini.