Mental rotation performance in aphantasia
Mental rotation performance in aphantasia
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失语症的心理旋转表现
DOI：
10.1167/18.10.1123
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发表时间：
2018
影响因子：
1.8
通讯作者：
J. Silvanto
中科院分区：
文献类型：
--
作者：
Zoe Pounder;Jane Jacob;C. Jacobs;C. Loveday;T. Towell;J. Silvanto
我们在头脑中形成视觉图像的能力被称为视觉心理意象，使我们能够在没有外部刺激的情况下利用内部表征。在视觉神经科学领域中，一种新近引起注意的病症，描述了缺乏自愿视觉心理意象的个体的经历。这一领域的大多数研究都源于视觉意象的主观报告，通过问卷调查，如视觉意象问卷（VVIQ）的生动性。最近，一些研究调查了认知功能的损害;然而，这些研究在研究中使用的失语症个体的样本量低方面受到限制。到目前为止，还没有研究探讨心理旋转（MR）的表现，先天性失语症。使用经典的谢泼德和梅茨勒MR范式，在这里，我们检查MR性能在20个人先天性失语症，以及测量自我报告的视觉对象和空间意象通过问卷调查（VVIQ，自发使用的意象量表和对象空间意象问卷）。我们发现，aphantasic参与者自我报告较高的分数相比，视觉空间意象的对象意象的分数，这是低于平均水平的对象意象分数控制。此外，在MR测试中，与对照组相比，aphantasic个体需要更长的时间来旋转刺激，并且这一时间随着旋转难度的增加而增加。尽管与对照组相比，aphantasic需要更长的时间来旋转刺激，但aphantasic参与者在所有难度水平上都比对照组参与者更准确。我们的研究结果表明，失语症患者在执行MR任务时使用不同的策略，导致反应时间较慢，但准确性较高。
Our ability to form visual images within our mind is known as visual mental imagery and enables us to draw on internal representations in the absence of external stimuli. Aphantasia, a recent condition to gain attention within the field of visual neuroscience, describes the experience of individuals who lack voluntary visual mental imagery. The majority of research in this area has stemmed from subjective reports of visual imagery, through questionnaires such as the Vividness of Visual Imagery Questionnaire (VVIQ). More recently, a few studies have investigated impairments in cognitive function; however, these studies are limited in terms of the low sample size of aphantasic individuals used within the studies. As yet, no study has explored mental rotation (MR) performance in congenital aphantasics. Using the classic Shepard and Metzler MR paradigm, here we examine MR performance in 20 individuals with congenital aphantasia, as well as measuring self-reported visual object and spatial imagery through questionnaires (VVIQ, Spontaneous Use of Imagery Scale and Object-Spatial Imagery Questionnaire). We find that aphantasic participants self-report higher scores for visual spatial imagery compared to object imagery scores, which were below average of the object imagery scores reported by controls. Furthermore, in the MR test, aphantasic individuals took longer to rotate the stimuli compared to controls, and this time increased in line with the increased level of difficulty of rotation. Despite aphantasics taking longer to mentally rotate stimuli compared to controls, aphantasic participants were more accurate then control participants across all levels of difficulty. Our results indicate that aphantasics use a different strategy when performing the MR task, leading to slower reaction times but higher accuracy.