The dichotomy of speed- and accuracy-related abilities in face and object cognition and their neurocognitive mechanisms

对人脸和物体处理的个体差异的研究表明，用于衡量表现准确性的困难任务捕获了刺激域中和跨刺激域可分离因素的差异化能力结构。相反，当使用旨在捕获性能速度的简单任务时，只有一个统一的、领域通用的能力因素，因为度量方法（任务范例）在内容领域之间是等效的。拟议的项目旨在通过直接测试（目标1和2）再次确认准确性和速度相关能力的二分法。更重要的是，该项目旨在通过应用最先进的事件相关脑电位（erp）分析工具，阐明这些能力背后的神经认知机制。目标3将考虑每个参与者的平均表现和平均ERP参数。另一个目标4将检查参与者的表现和ERP测量的可变性，以及刺激前大脑状态与平均ERP和试验间ERP可变性的关系。

Research on individual differences in face and object processing has shown that difficult tasks used to measure performance accuracy capture a differentiated ability structure with separable factors within and across stimulus domains. In contrast, when easy tasks, designed to capture performance speed, are used, there is solely a unitary, domain-general ability factor, given that the methods of measurement (task paradigms) are equivalent across content domains. The proposed project aims to reconfirm the dichotomy of accuracy and speed related abilities with a direct test (Objective 1 and 2). More importantly, the project intends to elucidate neurocognitive mechanisms underlying these abilities by applying sophisticated state of the art tools of analysis to event-related brain potentials (ERPs). Objective 3 will consider mean performance and average ERP parameters of each participant. An additional Objective 4 will examine the variability of performance and ERP measures within participants and the relations of the prestimulus brain state to both average ERP and trial-to-trial ERP variability.