Gullaud-Toussaint Lucette, Vinter Annie
Laboratoire d'Analyse de la Performance Motrice Humaine, MSHS, 99 Avenue du Recteur Pineau, 86000, Poitiers, France.
Psychol Res. 2003 Nov;67(4):291-302. doi: 10.1007/s00426-002-0129-y. Epub 2003 Feb 19.
The present study investigated the underlying processes used to cope with discordant sensory information induced in a mirror-drawing task. Two experiments were carried out in which adults copied simple geometrical figures made up of either horizontal and vertical segments or oblique segments meeting at a right angle in both a normal and a mirror condition. Experiment 1 identified individual differences in relation to preferred graphic movement directions; some subjects preserved the visual directions that occurred in normal drawing by reversing the direction of drawing movements (perceived-direction group), while others preserved normal drawing directions that produced reversed visual directions (performed-direction group). Experiment 2 was performed to elucidate whether these two distinct behaviors resulted from different strategies used to cope with visuo-proprioceptive discordances. The main results showed that preference for the perceived directions led to longer pauses, slower movement velocity, greater movement dysfluency, and greater spatial orientation accuracy. By contrast, longer reaction time and greater angular accuracy characterized performance in the performed-direction group. These results were interpreted as indicating that two distinct information-processing strategies can be used when resolving sensory discordance in graphic production.
本研究调查了在镜像绘画任务中用于应对不一致感官信息的潜在过程。进行了两项实验，让成年人在正常和镜像条件下临摹由水平和垂直线段或成直角相交的斜线段组成的简单几何图形。实验1确定了与偏好的图形运动方向相关的个体差异；一些受试者通过反转绘画运动方向来保留正常绘画中出现的视觉方向（感知方向组），而另一些受试者则保留产生反转视觉方向的正常绘画方向（执行方向组）。进行实验2是为了阐明这两种不同的行为是否源于用于应对视觉-本体感觉不一致所采用的不同策略。主要结果表明，对感知方向的偏好导致停顿时间更长、运动速度更慢、运动流畅性更差以及空间定向准确性更高。相比之下，执行方向组的表现特征是反应时间更长和角度准确性更高。这些结果被解释为表明在解决图形制作中的感官不一致时可以使用两种不同的信息处理策略。
