Rollman Gary B
Department of Psychology, The University of Western Ontario, London, Ont. N6A 5C2 Canada.
Pain. 1979 Feb;6(1):9-21. doi: 10.1016/0304-3959(79)90136-2.
Proponents of the use of signal detection theory (SDT) in the assessment of pain modulation have generally looked for changes in d' to indicate a reduction of sensory function, and a change in criterion to indicate a modification of the subject's response bias or attitudinal predisposition. In the first experiment, both assumptions failed to receive empirical verification. Discrimination d' was eqivalent before and after two strong levels of electrical current was reduced. The criterion parameter appeared to shift in a more conservative direction after the stimulus diminution. These results are used to question the validity of both detection and discrimination indices in the measurement of pain. An alternative means for describing the experimental results revealed a striking adaptation-level effect with implications for the assessment of both experimentally induced and endogenous pain. The outcome of a second experiment reinforced the adaptation-level theory interpretation of the results and provided additional evidence concerning the difficultuies in evaluating SDT parameters in studies of potential analgesics.
在疼痛调节评估中使用信号检测理论（SDT）的支持者通常寻求辨别力d'的变化以表明感觉功能的降低，以及标准的变化以表明受试者反应偏差或态度倾向的改变。在第一个实验中，这两个假设均未得到实证验证。在两次强电流水平降低前后，辨别力d'是相等的。在刺激减弱后，标准参数似乎朝着更保守的方向移动。这些结果被用来质疑疼痛测量中检测和辨别指标的有效性。描述实验结果的另一种方法揭示了一个显著的适应水平效应，这对实验诱导疼痛和内源性疼痛的评估都有影响。第二个实验的结果强化了对结果的适应水平理论解释，并提供了更多关于在潜在镇痛药研究中评估SDT参数困难的证据。
