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首页> 外文期刊>Physiology & behavior >The effects of asymmetric vs. symmetric probability of targets following probe and irrelevant stimuli in the complex trial protocol for detection of concealed information with P300.
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The effects of asymmetric vs. symmetric probability of targets following probe and irrelevant stimuli in the complex trial protocol for detection of concealed information with P300.

机译：在使用P300检测隐藏信息的复杂试验方案中，探针和无关刺激后目标的不对称概率与对称概率的影响。

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摘要

The complex trial protocol (CTP, [J.P. Rosenfeld, E. Labkovsky, M. Winograd, M.A. Lui, C. Vandenboom & E. Chedid (2008), The complex trial protocol (CTP): a new, countermeasure-resistant, accurate P300-based method for detection of concealed information. Psychophysiology, 45, 906-919.]) is a sensitive, new, countermeasure-resistant, P300-based concealed information protocol in which a first stimulus (Probe or Irrelevant) is followed after about 1.4-1.8 s by a Target or Non-Target second stimulus within one trial. It has been previously run with a potentially confounding asymmetric conditional probability of Targets following Probes vs. Irrelevants. This present study compared asymmetric vs. symmetric conditional probability groups and found no significant differences in detection rates or Probe-minus-Irrelevant P300 differences between groups. Group differences were seen in error rates and reaction times (RT) to second stimuli. These differences were, however, not diagnostic for deception vs. truth-telling, and were attributable to response perseveration.
机译：复杂的试验方案（CTP，[JP Rosenfeld，E。Labkovsky，M。Winograd，MA Lui，C。Vandenboom和E. Chedid（2008），复杂的试验方案（CTP）：一种新的，可抵抗反措施的，准确的P300的基于方法的隐藏信息检测方法，《心理生理学》，45，906-919。]）是一种敏感的，新的，抗对策的，基于P300的隐藏信息协议，其中第一个刺激（探针或无关）在大约1.4之后在一次试验中，有靶或无靶第二刺激刺激-1.8 s。此前，它在探测与无关因素之后，以潜在的混杂的目标条件条件不对称概率运行。本研究比较了不对称和对称条件概率组，发现两组之间的检测率或Probe-minus-Irrelevant P300差异无显着差异。在对第二种刺激的错误率和反应时间（RT）中观察到组间差异。然而，这些差异不能诊断出欺骗还是真相，而归因于反应的坚持。

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