Dipartimento di Psicologia, Sapienza Università di Roma, Rome, Italy.
PLoS One. 2013 Jul 10;8(7):e67390. doi: 10.1371/journal.pone.0067390. Print 2013.
Representational neglect, which is characterized by the failure to report left-sided details of a mental image from memory, can occur after a right hemisphere lesion. In this study, we set out to verify the hypothesis that two distinct forms of representational neglect exist, one involving object representation and the other environmental representation. As representational neglect is considered rare, we also evaluated the prevalence and frequency of its association with perceptual neglect. We submitted a group of 96 unselected, consecutive, chronic, right brain-damaged patients to an extensive neuropsychological evaluation that included two representational neglect tests: the Familiar Square Description Test and the O'Clock Test. Representational neglect, as well as perceptual neglect, was present in about one-third of the sample. Most patients neglected the left side of imagined familiar squares but not the left side of imagined clocks. The present data show that representational neglect is not a rare disorder and also support the hypothesis that two different types of mental representations (i.e. topological and non-topological images) may be selectively damaged in representational neglect.
表象忽视，其特征是从记忆中无法报告心理意象的左侧细节，可能发生在右半球损伤后。在这项研究中，我们旨在验证存在两种不同形式的表象忽视的假设，一种涉及物体表象，另一种涉及环境表象。由于表象忽视被认为很少见，我们还评估了其与知觉忽视相关联的患病率和频率。我们让一组 96 名未经选择的、连续的、慢性的右脑损伤患者接受了广泛的神经心理学评估，其中包括两项表象忽视测试：熟悉正方形描述测试和时钟测试。大约三分之一的样本存在表象忽视和知觉忽视。大多数患者忽视了想象中的熟悉正方形的左侧，但没有忽视想象中的时钟的左侧。目前的数据表明，表象忽视并不是一种罕见的障碍，也支持了两种不同类型的心理表象（即拓扑和非拓扑图像）可能在表象忽视中被选择性损伤的假设。
