A lifespan comparison of the reliability, test-retest stability, and signal-to-noise ratio of event-related potentials assessed during performance monitoring
A lifespan comparison of the reliability, test-retest stability, and signal-to-noise ratio of event-related potentials assessed during performance monitoring
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DOI：
10.1111/j.1469-8986.2012.01476.x
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发表时间：
2013-01-01
期刊：
影响因子：
3.7
通讯作者：
Lindenberger, Ulman
中科院分区：
文献类型：
--
作者：
Haemmerer, Dorothea;Li, Shu-Chen;Lindenberger, Ulman
研究了儿童、青少年、年轻人和老年人在执行监测任务时事件相关电位（ERP）的可靠性、稳定性和信噪比（SNR）。P2、N2、P3和P2-N2峰-峰振幅在所有年龄组中均显示出较高的奇偶分裂可靠性，范围为0.70至0.90。多组分析表明，ERP振幅的重测稳定性（2周）在四个年龄组之间没有差异。相反，相对于青少年和年轻人，儿童和老年人的SNR较低，儿童的噪声水平较高，老年人的信号功率较低。我们的结论是，刺激锁定ERP的SNR的年龄差异可以成功地补偿平均约40次试验的平均过程。然而，基线噪声和分半信度的年龄差异应考虑比较年龄组在单一的试验措施或随时间变化的过程与ERP。
The reliability, stability, and signal-to-noise ratio (SNR) of event-related potentials (ERPs) were investigated in children, adolescents, younger adults, and older adults in performance monitoring tasks. P2, N2, P3, and P2-N2 peak-to-peak amplitude showed high odd-even split reliabilities in all age groups, ranging from.70 to.90. Multigroup analyses showed that test-retest stabilities (across 2 weeks) of ERP amplitudes did not differ among the four age groups. In contrast, relative to adolescents and younger adults, SNRs were lower in children and older adults, with higher noise levels in children and lower signal power in older adults. We conclude that age differences in the SNR of stimulus-locked ERPs can be successfully compensated by the averaging procedure with about 40 trials in the average. However, age differences in baseline noise and split-half reliability should be considered when comparing age groups in single trial measures or time-varying processes with ERPs.