Threshold for conditioned suppression using x-rays as the pre-aversive stimulus

Journal of the Experimental Analysis of Behavior
D D Morris

Abstract

Four male, 12-week-old Sprague-Dawley rats were used to determine the threshold for behavioral response to X-irradiation using the conditioned suppression technique. They were maintained at 80 per cent body weight and initially trained to stable performance on a VI 1 min schedule with 16 per cent sucrose solution as reinforcement. After a stable baseline was obtained, animals were placed in the instrumental conditioning box beneath the X-ray machine for a half-hour session each day. While subjects were actively pressing the lever for reinforcement, 15-sec X-ray exposures of 0.5 R/sec were administered, followed immediately by electric shock. After all animals had exhibited conditioned suppression, the dose-rate was decreased in subsequent sessions in an effort to establish threshold. The results indicate that X-rays at a dose-rate as low as 0.004 R/sec can be an effective pre-aversive stimulus for the rat.

References

Jul 1, 1960·Journal of the Experimental Analysis of Behavior·I GELLER
Jan 1, 1963·Journal of the Experimental Analysis of Behavior·D O LYON
Dec 8, 1962·Nature·J GARCIAR A KOELLING
May 17, 1963·Science·J C SmithE L HUNT
Apr 1, 1958·Journal of the Experimental Analysis of Behavior·L SteinJ V Brady

Citations

Jun 1, 1981·Behavioral and Neural Biology·L J CooperA H Madjid
Aug 1, 1971·Psychological Reports·M L Cheal, R L Sprott
Jan 1, 1994·Bioelectromagnetics·R F SmithD R Justesen
Jul 1, 1970·Archives of Environmental Health·C J CarrT E Huber
Jan 1, 1969·Journal of the Experimental Analysis of Behavior·W W Henton

Related Concepts

Avoidance Learning
Conditioning (Psychology)
Extinction, Psychological
Effects of Radiation
Nuclear Track Detection

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