Mottron L, Belleville S
Centre de Recherche, Centre hospitalier Sainte Justine, Montreal, Canada.
Psychol Med. 1995 May;25(3):639-48. doi: 10.1017/s0033291700033547.
This study examines perspective construction in an autistic patient (E.C.) with quasinormal intelligence who exhibits exceptional ability when performing three-dimensional drawings of inanimate objects. Examination of E.C.'s spontaneous graphic productions showed that although his drawings approximate the 'linear perspective' system, the subject does not use vanishing points in his productions. Nevertheless, a formal computational analysis of E.C.'s accuracy in an experimental task showed that he was able to draw objects rotated in three-dimensional space more accurately than over-trained controls. This accuracy was not modified by suppressing graphic cues that permitted the construction of a vanishing point. E.C. was also able to detect a perspective incongruency between an object and a landscape at a level superior to that of control subjects. Since E.C. does not construct vanishing points in his drawings, it is proposed that his production of a precise realistic perspective is reached without the use of explicit or implicit perspective rules. 'Special abilities' in perspective are examined in relation to existing theoretical models of the cognitive deficit in autism and are compared to other special abilities in autism.
本研究考察了一名智力接近正常的自闭症患者（E.C.）的透视构建情况，该患者在绘制无生命物体的三维图形时展现出非凡能力。对E.C.的自发图形作品进行检查发现，尽管他的画作近似“线性透视”系统，但他在作品中并未使用灭点。然而，对E.C.在一项实验任务中的准确性进行的形式计算分析表明，他能够比过度训练的对照组更准确地绘制在三维空间中旋转的物体。通过抑制允许构建灭点的图形线索，这种准确性并未改变。E.C.还能够在高于对照组受试者的水平上检测物体与景观之间的透视不一致。由于E.C.在其画作中不构建灭点，因此有人提出，他在不使用明确或隐含透视规则的情况下就能产生精确逼真的透视效果。透视方面的“特殊能力”结合自闭症认知缺陷的现有理论模型进行了考察，并与自闭症的其他特殊能力进行了比较。
