School of Psychology, Brain & Behaviour Research Institute, University of Wollongong, Wollongong, New South Wales, Australia.
NICM Health Research Institute and Translational Health Research Institute (THRI), Western Sydney University, Penrith, New South Wales, Australia.
Psychophysiology. 2019 Mar;56(3):e13300. doi: 10.1111/psyp.13300. Epub 2018 Nov 19.
This study compared the ERP components and behavior associated with the auditory equiprobable and classic oddball tasks, to relate the cognitive processing stages in those paradigms and continue the development of the sequential processing schema. Target and nontarget ERP data were acquired from 66 healthy young adults (M = 20.1, SD = 2.4 years, 14 male) who completed both equiprobable (target p = 0.5) and oddball tasks (target p = 0.3). Separate temporal PCAs were used to decompose the ERP data in each task and condition, and the similarity of the components identified in each condition was examined between tasks. Probability effects on component amplitudes and behavior were also analyzed to identify task differences in cognitive demands. A highly similar series of components was identified in each task, closely matching the schema: targets elicited N1-3, N1-1, PN, N2c, P3b, SW1, SW2; whereas nontargets elicited N1-3, N1-1, PN, N2b, P3a, SW1, SW2. N1-1 and PN amplitudes increased as stimulus probability decreased, irrespective of the condition. N2b, P3b, SW1, and SW2 amplitudes also varied between tasks, illustrating task-specific demands on those processing stages. These findings complemented the behavioral outcomes, which demonstrated greater accuracy and control in the classic oddball task. Overall, this study demonstrated comparable processing in the auditory equiprobable and classic oddball tasks, extending the generalizability of the schema and enabling further integration of the ERP theory associated with these tasks. This study also clarifies stimulus probability effects on the schema, providing important insight into the functionality of common ERP components.
这项研究比较了与听觉等概率和经典Oddball 任务相关的 ERP 成分和行为，以关联这些范式中的认知加工阶段，并继续发展序列加工模式。目标和非目标 ERP 数据是从 66 名健康的年轻成年人（M = 20.1，SD = 2.4 岁，14 名男性）中获得的，他们完成了等概率（目标 p = 0.5）和 Oddball 任务（目标 p = 0.3）。分别使用时间 PCA 对每个任务和条件下的 ERP 数据进行分解，并检查了任务之间条件下确定的成分的相似性。还分析了概率对成分幅度和行为的影响，以识别认知需求的任务差异。在每个任务中都确定了高度相似的一系列成分，与模式非常匹配：目标引发 N1-3、N1-1、PN、N2c、P3b、SW1、SW2；而非目标引发 N1-3、N1-1、PN、N2b、P3a、SW1、SW2。无论条件如何，N1-1 和 PN 幅度随着刺激概率的降低而增加。N2b、P3b、SW1 和 SW2 幅度也因任务而异，说明了这些处理阶段的任务特定需求。这些发现补充了行为结果，即经典 Oddball 任务的准确性和控制能力更高。总的来说，这项研究表明在听觉等概率和经典 Oddball 任务中存在类似的处理，扩展了模式的普遍性，并使与这些任务相关的 ERP 理论进一步整合。该研究还澄清了模式对刺激概率的影响，为常见 ERP 成分的功能提供了重要的见解。
