We describe a patient with right hemisphere damage affected by mild left visuo-spatial neglect and constructional apraxia. During the rehabilitation, he failed to draw a draught-board using horizontal and vertical trajectories, but he performed it successfully using oblique trajectories. These observations suggested an impairment of vertical/horizontal spatial coordinates system. In copying tasks including figure elements in different orientations he drew more accurately components in oblique orientation, whereas failed to reproduce components in horizontal orientation. The patient performed visuospatial perceptual and perceptual-imaginative tasks successfully. From these findings, it is possible to suggest that the oblique coordinate system of reference operates independently of vertical and horizontal coordinate systems in building a complex figure and that, therefore, cardinal orientation do not constitute a reference norm to define oblique orientation, as previously suggested.

中文翻译：

---

使用斜坐标绘图：在单个案例上。

我们描述了一名右半球损伤的患者，该患者受到轻度左视觉空间忽视和结构性失用症的影响。在康复过程中，他用水平和垂直的轨迹画画板失败，但他用倾斜的轨迹成功地画了画板。这些观察结果表明垂直/水平空间坐标系受损。在包括不同方向的图形元素的复制任务中，他更准确地绘制了倾斜方向的组件，而未能复制水平方向的组件。患者成功地完成了视觉空间感知和感知-想象任务。从这些发现中，