Center for the Developing Brain, Child Mind Institute, New York, NY 10022, United States.
Int J Psychophysiol. 2012 Aug;85(2):274-7. doi: 10.1016/j.ijpsycho.2012.03.008. Epub 2012 Apr 6.
Anti and pro-saccade performance in single or mixed contexts was explored in a large sample of young adults (n=281). ANOVAs were first conducted to evaluate trial type, context and gender effects. A cluster analysis was then used to determine whether subgroups could be identified based on saccadic performance variables. Increased antisaccade errors were observed among females and during mixed-saccade runs. Cluster analysis identified two groups: 1) increased errors clustered with faster latencies and 2) decreased errors clustered with slower latencies. These data offer justification for examining subgroups based on saccadic performance and may help elucidate mechanisms underlying response variability within and between different populations.
在一项对大量年轻成年人（n=281）的研究中，探究了在单一或混合情境下的反扫视和正扫视表现。首先进行方差分析，以评估试验类型、情境和性别效应。然后进行聚类分析，以确定是否可以根据扫视表现变量确定亚组。在女性和混合扫视运行中观察到反扫视错误增加。聚类分析确定了两个组：1）错误增加与潜伏期较快相关联，2）错误减少与潜伏期较慢相关联。这些数据为基于扫视表现检查亚组提供了依据，并可能有助于阐明不同人群内和人群之间反应变异性的机制。
