University of Michigan.
J Cogn Neurosci. 1994 Summer;6(3):189-203. doi: 10.1162/jocn.1994.6.3.189.
Abstract Sixty patients with unilateral stroke (half with left hemisphere damage and half with right hemisphere damage) and a control group (N = 15) matched for age and educational level were tested in two experiments. In one experiment they were first shown, on each trial, a sample drawing depicting one or more objects. Following a short delay, they were asked to identify the drawing when it was paired with a drawing in which the same object(s) was transformed in categorical or coordinate spatial relations. In the other experiment, the same subjects first were shown, on each trial, a sample drawing. They then judged which of two variants (each in one type of spatial relation) looked more similar to the sample drawing. Typically, patients with left-sided stroke mistakenly identified the categorical transformation for the sample drawing in the first task; in the second task, they judged the categorical transformation as more similar to the sample drawing. Patients with right-sided stroke mistakenly identified the coordinate transformations for the sample drawing in the first task, and, in the second task, typically judged the drawings transformed along coordinate spatial relations as more similar to the sample drawing. These findings provide evidence for complementary lateralization of the two types of spatial perception. It can therefore be inferred that separate functional subsystems process the two types of spatial relations.
摘要 60 名单侧中风患者（左半球损伤和右半球损伤各半）和一组年龄和教育程度相匹配的对照组（N=15）在两项实验中接受了测试。在一项实验中，他们首先在每次试验中看到一个或多个对象的样本绘图。在短暂的延迟后，当他们将绘图与相同对象以类别或坐标空间关系转换的绘图配对时，他们被要求识别该绘图。在另一个实验中，相同的受试者首先在每次试验中看到一个样本绘图。然后，他们判断两个变体（每个变体都有一个空间关系类型）中哪个看起来与样本绘图更相似。通常，左侧中风的患者会错误地识别出第一项任务中样本绘图的类别转换；在第二项任务中，他们会判断类别转换与样本绘图更相似。右侧中风的患者会错误地识别出第一项任务中样本绘图的坐标转换，并且在第二项任务中，通常会判断沿坐标空间关系转换的绘图与样本绘图更相似。这些发现为两种类型的空间感知的互补偏侧化提供了证据。因此，可以推断出两个空间关系类型由独立的功能子系统处理。
