Combined effects of elevated pressures of nitrogen and oxygen on operant performance.
D000818:Animals; D003216:Conditioning, Operant; D006371:Helium; D006931:Hyperbaric Oxygenation; D008297:Male; D009584:Nitrogen; D010313:Partial Pressure; D011312:Pressure; D051381:Rats
D006371:Helium; D009584:Nitrogen