Latency of skin conductance responses across stimulus modalities.
Latency of skin conductance responses across stimulus modalities.
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DOI：
10.1111/psyp.13307
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发表时间：
2018-11
期刊：
影响因子：
3.7
通讯作者：
R. Sjouwerman;T. Lonsdorf
中科院分区：
文献类型：
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作者：
R. Sjouwerman;T. Lonsdorf
再现性和方法的鲁棒性是当今研究中的主要关注点，也涉及自主测量。例如，皮肤电导响应（SCR）的量化依赖于响应特性，诸如响应开始（即，潜伏期），这是四十多年前通过使用纸笔方法建立的。从那时起，数据采集已经发展到数字方法，将采样率提高到100，000个样本/秒，从而提高了分辨率和准确性。在这里，SCR延迟作为定义适当的响应窗口的主要特征通过使用最先进的设备来重新访问。此外，在不同的刺激形式（触觉、听觉、视觉）上以及在学习实验的过程中关于它们的时间动态（即，恐惧条件作用）。已建立的反应潜伏期标准在很大程度上得到了证实，即使结果确实表明了一个更窄的和潜在的刺激模式特定的潜伏期标准。调查SCR lavonide个体差异的探索性分析为性别和认知效应的作用提供了第一个证据（即，而性格性消极性以及其他人格特质对SCR延迟没有影响。因此，SCR延迟可能具有超出用于定义响应窗口的唯一标准函数的信息性和区分性值。目前的研究结果可能有助于提高使用SCR的严谨性，并表明SCR潜伏期作为一种描述性指标值得进一步研究。
Reproducibility and methodological robustness are of major concern in research today, also with respect to autonomic measures. Quantification of skin conductance responses (SCRs), for instance, relies on response characteristics such as response onset (i.e., latency), which were established more than four decades ago by using paper-pencil methods. Since then, data acquisition has advanced to digital methods, improving sampling rates up to 100,000 samples/second and thereby improving resolution and accuracy. Here, SCR latency as a major characteristic for defining an appropriate response window is revisited by using state-of-the-art equipment. Furthermore, SCR latencies are investigated across different stimulus modalities (tactile, auditory, visual) and with respect to their temporal dynamics over the course of a learning experiment (i.e., fear conditioning). The established response latency criteria were largely confirmed even though results did suggest an even narrower and potential stimulus modality-specific latency criterion. Exploratory analyses investigating individual differences in SCR latencies provided first evidence for a role of sex and cognitive effects (i.e., contingency awareness) while dispositional negativity as well as other personality traits did not affect SCR latencies. Consequently, SCR latencies might have an informative and discriminative value beyond a solely criterial function for defining response windows. The current findings may help to improve the rigor of using SCRs and suggest that SCR latency as a descriptive measure warrants further investigation.