Reliability analysis of event-related brain potentials to olfactory stimuli.
Reliability analysis of event-related brain potentials to olfactory stimuli.
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DOI：
10.1111/1469-8986.3960733
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发表时间：
2002-11
期刊：
影响因子：
3.7
通讯作者：
T. Thesen;C. Murphy
中科院分区：
文献类型：
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作者：
T. Thesen;C. Murphy
嗅觉事件相关电位(OERP)已被用于研究健康和疾病中的嗅觉加工。然而，OERP的可靠性尚未从统计上确定。本研究在4周的时间间隔内检验了OERP的重测信度。脑电记录来自Fz、Cz和Pz，使用乙酸戊酯的单刺激范例。ERP成分潜伏期和峰间波幅的可靠性用类内相关系数和皮尔逊乘积矩相关系数来评估。潜伏期的可靠性高于波幅。P2潜伏期的相关系数最高，尤其是在Cz和Pz，P3波幅和潜伏期在Cz和Pz表现出较高的可靠性。FZ的相关系数最低。这些数据表明，OERP的可靠性与听觉和视觉ERPs相当，支持在基础研究和临床评估中使用OERPs。
Olfactory event-related potentials (OERP) have been used to investigate olfactory processing in health and disease. However, the reliability of the OERP has yet to be established statistically. The present study examined test-retest reliability of the OERP over a 4-week interval. EEG was recorded from Fz, Cz, and Pz, using a single-stimulus paradigm with amyl acetate. Reliabilities for ERP component latencies and interpeak amplitudes were assessed as intraclass and Pearson product-moment correlation coefficients. Reliabilities were higher for latency than for amplitude. Highest correlation coefficients were observed for P2 latency, specifically at Cz and Pz P3 amplitude and latency exhibited high reliability at Cz and Pz. Fz demonstrated weakest correlation coefficients. The data suggest that OERP reliability is comparable to that of auditory and visual ERPs, supporting the use of OERPs in both basic research and clinical assessment.