Irwin R J, Terman M
J Exp Anal Behav. 1970 Mar;13(2):135-43. doi: 10.1901/jeab.1970.13-135.
Two rats were trained to detect brief 8000-Hz tones centered in a one-third octave band of noise. The procedure was analogous to the yes-no method of human psychophysics in that one response was defined as correct and reinforced if the tone were present in the noise, and another response was correct and reinforced if the tone were absent. The percentage of correct responses was determined principally by the energy in the tone for the range of durations studied (75 to 600 msec): if the tone's duration were halved, for example, its power had to be doubled to keep the percentage of correct responses about the same. The ratio of the energy in the tone to the power per cycle of the noise needed to maintain 75% correct responses was about 36 db for one animal and 41 db for the other. Although the two responses were similar, and their consequences equal, biases in responding were sometimes observed.
训练了两只大鼠来检测以三分之一倍频程噪声频段为中心的短暂8000赫兹音调。该程序类似于人类心理物理学的是-否方法，即如果噪声中存在音调，则一种反应被定义为正确并得到强化；如果音调不存在，则另一种反应是正确并得到强化。在所研究的持续时间范围内（75至600毫秒），正确反应的百分比主要由音调中的能量决定：例如，如果音调的持续时间减半，其功率必须加倍才能使正确反应的百分比保持大致相同。对于一只动物，维持75%正确反应所需的音调能量与噪声每周期功率的比值约为36分贝，另一只动物为41分贝。虽然两种反应相似，其结果也相同，但有时会观察到反应偏差。
