IMMEDIATE BEHAVIORAL DETECTION OF X-RAYS BY THE RHESUS MONKEY
Henry L. Taylor, James C. Smith, C. A. Hatfield · 1967
Immediate detection of X-rays (.63r/sec.) in four rhesus monkeys was demonstrated through the use of the conditioned suppression technique. Detection was evident in three monkeys after 20 trials in which X-rays and unavoidable shock were paired, and after 5 trials of pairing X-rays and shock for one monkey. Dose rate was decreased to .03r/sec. and all subjects showed a high level of response suppression in the presence of X-rays, but no suppression of response was evident during control trials.