Terman M, Terman J S
J Exp Anal Behav. 1973 Nov;20(3):439-45. doi: 10.1901/jeab.1973.20-439.
Rats detected the luminance difference of standard and comparison stimuli in a go/no-go procedure. A key press was reinforced by brain stimulation only when the key's luminance was 10.53 ft-L (36.01 cd/m(2)), and key presses to dimmer comparison values produced a 5-sec timeout. These asymmetrical reinforcement contingencies maximized the bias toward hits and false alarms ("yes" reports), and thus the number of latencies available for analysis. False alarm latencies exceeded hit latencies, with the magnitude of differentiation proportional to luminance difference, demonstrating stimulus control on the very occasions that errors (key presses to comparison luminances) were emitted. Overall latencies decreased when the standard-comparison luminance difference was made smaller, suggesting a reduction in observing time when the stimuli became indiscriminable.
在一个“是/否”程序中，大鼠能够检测到标准刺激和比较刺激之间的亮度差异。只有当按键的亮度为10.53英尺朗伯（36.01坎德拉每平方米）时，按键才会通过脑刺激得到强化，而对较暗比较值的按键操作会导致5秒的超时。这些不对称的强化条件使偏向命中和误报（“是”报告）的偏差最大化，从而增加了可用于分析的潜伏期数量。误报潜伏期超过命中潜伏期，差异程度与亮度差异成正比，这表明在发出错误（对比较亮度的按键操作）的情况下存在刺激控制。当标准-比较亮度差异变小时，总体潜伏期会缩短，这表明当刺激变得难以区分时，观察时间会减少。
