Reliability and stability of contingent negative variation
Reliability and stability of contingent negative variation
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DOI：
10.1023/a:1009533405695
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发表时间：
2000-03-01
影响因子：
3
通讯作者：
Gerber, WD
中科院分区：
文献类型：
--
作者：
Kropp, P;Kiewitt, A;Gerber, WD
测试的可靠性参数表明测试本身的稳定性（和质量）。可靠性系数大于0.70表明属性随着时间的推移足够稳定，可以被描述为一种特质。采用重测设计，测定了27名健康人的关联负变（CNV）幅度的信度参数。CNV在Cz记录，刺激间隔为3秒，在2个不同的场合。两次记录之间的相关系数分别为总CNV（tCNV）0.675、早期成分（iCNV）0.855、晚期成分（iCNV）0.631和命令后负变（PINV）0.420。PINV的统计学复检和0.655 iCNT在10天内保持稳定，超过其他参数。建议所描述的标准化CNV记录程序确保健康受试者的可重复性和稳定的结果。
Reliability parameters of a test indicate the stability (and quality) of the test itself Reliability coefficients greater than 0.70 suggest an attribute as being sufficiently stable over time to be characterized as a trait. Reliability parameters of contingent negative variation (CNV) amplitudes in 27 healthy individuals were determined using a test-retest design. CNV was recorded at Cz, with an interstimulus interval of 3 s, on 2 separate occasions. initial session and 10 days later Correlation coefficients between the 2 recording sessions were 0.675 for the total-CNV (tCNV), 0.855 for the early component(iCNV), 0.631 for the late component (iCNV), and 0.420 for the post-imperative negative variation (PINV). Statistical retest and 0.655 for PINV The iCNT, more than the other parameters, remained stable over the period of 10 days. It is suggested that the described standardized CNV recording procedure ensures reproducible and stable results in healthy subjects.