Kruper D C
J Exp Anal Behav. 1968 Jan;11(1):71-5. doi: 10.1901/jeab.1968.11-71.
Two monkeys (Macaca mulatta) were trained to perform an oddity discrimination using automatically projected patterned stimuli. After criteria for both response and discrimination stability were met, a tone followed by shock was superimposed upon the ongoing behavior. Each 60-sec tone was terminated with the onset of a 0.3-sec, 1 to 1.5-ma electric shock. During the tone, baseline responding was partially suppressed but discrimination performance was little altered from the pre-tone period. When shock was raised to 2 to 3 ma, responding was further suppressed, but discrimination performance was again essentially unaltered.
训练了两只恒河猴（猕猴），让它们使用自动投射的图案刺激来进行奇特性辨别。在满足反应和辨别稳定性的标准后，在持续的行为之上叠加一个随后伴有电击的音调。每个60秒的音调在0.3秒、1至1.5毫安的电击开始时终止。在音调期间，基线反应部分受到抑制，但辨别表现与音调前阶段相比几乎没有变化。当电击强度提高到2至3毫安时，反应进一步受到抑制，但辨别表现再次基本未变。
