Quantifying aphantasia through drawing: Those without visual imagery show deficits in object but not spatial memory
Quantifying aphantasia through drawing: Those without visual imagery show deficits in object but not spatial memory
复制标题
通过绘画量化失语症：那些没有视觉意象的人表现出物体记忆缺陷，但空间记忆没有缺陷
作者：
Wilma A. Bainbridge;Zoe Pounder;A. Eardley;C. Baker
先天性失语症是一种最近被定义为尽管有完整的语义记忆、识别记忆和视觉感知，但无法形成自愿视觉意象的经历。由于视觉意象的这种特殊缺陷，失语症成为探索视觉记忆中表征本质的理想群体，特别是物体、空间和符号信息的相互作用。在这里，我们对失语症患者进行了大规模的在线研究，揭示了他们的记忆表征中物体和空间内容的分离。六十一名失语症患者和具有典型意象的匹配对照研究了现实世界的场景图像，并被要求从记忆中绘制它们，然后在匹配的感知条件下复制它们。 2,795 名在线评分员对绘图的物体和空间细节进行了客观量化。失语症患者回忆起的物体比对照组少得多，绘画中的颜色也较少，而且对语言支架的依赖增加。然而，失语症患者表现出令人难以置信的高空间准确性，与对照组相当，并且记忆错误显着减少。这些组间差异仅在回忆过程中表现出来，在匹配的知觉条件下组间没有差异。失语症中这种特定于物体的记忆障碍为记忆中支持物体与空间信息的独立系统提供了证据。
Congenital aphantasia is a recently characterized experience defined by the inability to form voluntary visual imagery, in spite of intact semantic memory, recognition memory, and visual perception. Because of this specific deficit to visual imagery, aphantasia serves as an ideal population for probing the nature of representations in visual memory, particularly the interplay of object, spatial, and symbolic information. Here, we conducted a large-scale online study of aphantasics and revealed a dissociation in object and spatial content in their memory representations. Sixty-one aphantasics and matched controls with typical imagery studied real-world scene images, and were asked to draw them from memory, and then later copy them during a matched perceptual condition. Drawings were objectively quantified by 2,795 online scorers for object and spatial details. Aphantasics recalled significantly fewer objects than controls, with less color in their drawings, and an increased reliance on verbal scaffolding. However, aphantasics showed incredibly high spatial accuracy, equivalent to controls, and made significantly fewer memory errors. These differences between groups only manifested during recall, with no differences between groups during the matched perceptual condition. This object-specific memory impairment in aphantasics provides evidence for separate systems in memory that support object versus spatial information.
影响因子：
15.9
作者：
Favila SE;Lee H;Kuhl BA
通讯作者：
Kuhl BA