Abstract：
Skin conductance (SC) is one of the indices commonly used in the autonomic Concealed Information Test (CIT), but SC amplitude is sometimes difficult to quantify. This study investigated the applicability of SC area to the CIT as an unambiguous measure of SC. Secondary analyses of an existing dataset indicated that SC area could be used to classify examinees according to their knowledge status, although the equivalence of its performance with the SC amplitude was inconclusive. Classification performance was best when the SC signal was converted to the difference from question onset and summed over 10 s after question onset. SC area produced relatively consistent evaluations of differential responses based on the amplitude for inter-item comparisons. In addition, the classification performance of SC area exceeded the chance level even for participants who showed few measurable amplitudes (low-responsive participants). A possible implication is that a tonic increase in SC occurred in response to the relevant question even in low-responsive participants, who are traditionally excluded from analysis. The use of SC area might contribute to more impartial data evaluation and broader application of the CIT. These results indicate that SC area can be used as an alternative measure of SC in the CIT.
摘要：
皮肤电导（SC）是自主神经隐匿信息测试（CIT）中常用的指标之一，但SC振幅有时难以量化。这项研究调查了SC面积对CIT的适用性，作为SC的明确度量。对现有数据集的二次分析表明，SC区域可用于根据考生的知识状况对考生进行分类，尽管其性能与SC振幅的等效性尚无定论。当SC信号从问题开始转换为差异并在问题开始后10s内求和时，分类性能最佳。SC区域根据项目间比较的幅度对差异响应进行了相对一致的评估。此外,即使对于显示很少可测量幅度的参与者(低反应参与者),SC区的分类表现也超过了机会水平.可能的含义是，即使在低反应的参与者中，SC的补品增加也是针对相关问题而发生的，传统上被排除在分析之外的人。SC区域的使用可能有助于更公正的数据评估和CIT的更广泛的应用。这些结果表明，SC面积可以用作CIT中SC的替代量度。
