Hermens Frouke, Kappers Astrid M L, Gielen Stan C A M
Radboud University Nijmegen, Nijmegen, The Netherlands.
Percept Psychophys. 2006 Jan;68(1):62-75. doi: 10.3758/bf03193656.
In three experiments, we investigated the structure of frontoparallel haptic space. In the first experiment, we asked blindfolded participants to rotate a matching bar so that it felt parallel to the reference bar, the bars could be at various positions in the frontoparallel plane. Large systematic errors were observed, in which orientations that were perceived to be parallel were not physically parallel. In two subsequent experiments, we investigated the origin of these errors. In Experiment 2, we asked participants to verbally report the orientation of haptically presented bars. In this task, participants made errors that were considerably smaller than those made in Experiment 1. In Experiment 3, we asked participants to set bars in a verbally instructed orientation, and they also made errors significantly smaller than those observed in Experiment 1. The data suggest that the errors in the matching task originate from the transfer of the reference orientation to the matching-bar position.
在三个实验中，我们研究了额状面触觉空间的结构。在第一个实验中，我们要求被蒙住眼睛的参与者旋转一根匹配棒，使其感觉与参考棒平行，这些棒可以处于额状面内的不同位置。我们观察到了较大的系统误差，即被感知为平行的方向实际上并不平行。在随后的两个实验中，我们研究了这些误差的来源。在实验2中，我们要求参与者口头报告触觉呈现的棒的方向。在这个任务中，参与者所犯的错误比实验1中的错误要小得多。在实验3中，我们要求参与者将棒设置在口头指示的方向上，他们所犯的错误也明显小于实验1中观察到的错误。数据表明，匹配任务中的误差源于参考方向向匹配棒位置的转移。
