Laboratory of Experimental Psychology, University of Leuven, Tiensestraat 102, box 3711, 3000, Leuven, Belgium.
Behav Res Methods. 2014 Jun;46(2):472-87. doi: 10.3758/s13428-013-0382-6.
Neuropsychological diagnostic tests of visual perception mostly assess high-level processes like object recognition. Object recognition, however, relies on distinct mid-level processes of perceptual organization that are only implicitly tested in classical tests. The Leuven Perceptual Organization Screening Test (L-POST) fills a gap with respect to clinically oriented tests of mid-level visual function. In 15 online subtests, a range of mid-level processes are covered, such as figure-ground segmentation, local and global processing, and shape perception. We also test the sensitivity to a wide variety of perceptual grouping cues, like common fate, collinearity, proximity, and closure. To reduce cognitive load, a matching-to-sample task is used for all subtests. Our online test can be administered in 20-45 min and is freely available at www.gestaltrevision.be/tests . The online implementation enables us to offer a separate interface for researchers and clinicians to have immediate access to the raw and summary results for each patient and to keep a record of their patient's entire data. Also, each patient's results can be flexibly compared with a range of age-matched norm samples. In conclusion, the L-POST is a valuable screening test for perceptual organization. The test allows clinicians to screen for deficits in visual perception and enables researchers to get a broader overview of mid-level visual processes that are preserved or disrupted in a given patient.
神经心理学视觉知觉诊断测试大多评估物体识别等高级过程。然而，物体识别依赖于明确的中程知觉组织过程，这些过程在经典测试中仅被隐含测试。鲁汶知觉组织筛选测试 (L-POST) 填补了中程视觉功能临床测试的空白。在 15 个在线子测试中，涵盖了各种中程过程，例如图形背景分割、局部和全局处理以及形状感知。我们还测试了对各种知觉分组线索的敏感性，例如共同命运、共线、邻近和闭合。为了降低认知负荷，所有子测试都使用匹配样本任务。我们的在线测试可以在 20-45 分钟内完成，并可在 www.gestaltrevision.be/tests 上免费获得。在线实现使我们能够为研究人员和临床医生提供一个单独的界面，以便他们能够立即访问每个患者的原始和摘要结果，并记录他们患者的全部数据。此外，还可以灵活地将每个患者的结果与一系列年龄匹配的正常样本进行比较。总之，L-POST 是一种用于知觉组织的有价值的筛选测试。该测试允许临床医生筛选视觉感知缺陷，并使研究人员能够更全面地了解特定患者中保存或破坏的中程视觉过程。
