title: Helium pressure effects on avoidance behavior in rats breathing high nitrogen pressures.
abstract: 3 rats given avoidance training and then exposed to 7, 13, and 19 ATA breathing nitrogen, then to 25, 31, and 37 ATA breathing helium, showed increased avoidance response rates above established baselines to 19 ATA followed by a decline. Narcotic effects of nitrogen were not reduced differentially by addition of helium.
mesh_terms: D000818:Animals; D001274:Atmospheric Pressure; D001362:Avoidance Learning / Q000187:drug effects; D003216:Conditioning, Operant; D006371:Helium / Q000627:therapeutic use*; D007222:Inert Gas Narcosis / Q000150:complications / Q000628:therapy*; D008297:Male; D051381:Rats
chemical_list: D006371:Helium