Abstract:

Previous studies have proved that there is a highly localized object-based inhibition on nontargets in the Multiple Object Tracking (MOT) task. And researches have studied the mechanism of selective nontarget inhibition mainly through operating the characteristic contrast between non-targets and targets such as moving pattern, shape and stereo disparity, while the number of targets and nontargets stayed constant. Using Multiple Object Tracking with Probe Dot Detection task, the present study examined selective inhibition effects in Multiple Object Tracking when the number of targets or nontargets had changed.

Key words: Multiple Object Tracking, selective inhibition, attention resource

摘要：

采用多目标追踪和点探测刺激觉察任务相结合的实验范式，考察目标和非目标数量变化对多目标追踪的选择性抑制效应。实验一设置非目标恒定而变化目标数量，结果发现：随着目标数量的增加，目标与非目标间的抑制差异量不随目标数量变化而变化。实验二设置目标恒定而变化非目标数量，结果发现：在非目标数量变化的三种水平下，目标与非目标间的抑制差异量也无显著差异。综合实验结果表明：在多目标追踪的追踪容量或抑制容量范围内，抑制差异量对目标数量或非目标数量变化是不敏感的；注意资源分配方式在一定范围内保持相对稳定。

关键词: 多目标追踪, 选择性抑制, 注意资源