Development of a world-wide web based contour integration test
Development of a world-wide web based contour integration test
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DOI：
10.1016/j.chb.2004.03.017
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发表时间：
2006-11-01
影响因子：
9.9
通讯作者：
Wilkniss, Sandra M.
中科院分区：
文献类型：
--
作者：
Kozma-Wiebe, Petra;Silverstein, Steven M.;Wilkniss, Sandra M.
在万维网上进行动态心理物理实验的可能性才刚刚开始探索。我们试图开发一个基于网络的版本的轮廓整合测试，是适合临床研究，并确定是否可以复制使用新的测试先前描述的轮廓整合缺陷精神分裂症。对灰色背景的Gabor补丁领域被用作刺激，和一个封闭的轮廓必须位于一个嘈杂的背景。一个两个选择的被迫选择范式中，受试者必须确定哪个方向的蛋形轮廓指向。图像的信噪比和轮廓元素之间的间距保持恒定，但轮廓元素的方向随着关键操作而变化。管理任务和记录数据的程序是在Java中实现的。精神分裂症轮廓整合缺陷的过去结果被复制。潜在的未来用途，这种测试的临床和研究目的进行了讨论。(c)2004 Elsevier Ltd.保留所有权利。
Possibilities for dynamic psychophysical experimentation on the World-Wide Web are just beginning to be explored. We sought to develop a Web-based version of a contour integration test that is suitable for clinical studies, and to determine whether the previously described contour integration deficit in schizophrenia could be replicated using the new test. Fields of Gabor patches against a gray background were used as stimuli, and a closed contour had to be located within a noisy background. A two-alternative forced-choice paradigm was developed in which the subject had to identify which direction an egg-shaped contour was pointing. The signal-to-noise ratio of the images, and the spacing between contour elements were kept constant, but the orientation of the contour elements was varied as the critical manipulation. The program to administer the task and record data was implemented within Java. Past results of a contour integration deficit in schizophrenia were replicated. Potential future uses of this test for clinical and research purposes are discussed. (c) 2004 Elsevier Ltd. All rights reserved.