Department of Neurology, University Hospital, and Department of Neurosciences, University of Geneva, Geneva, Switzerland.
Eur Neurol. 2012;68(4):240-6. doi: 10.1159/000339266. Epub 2012 Sep 21.
The perception of the vertical is frequently shifted to the contralesional side in patients with hemispheric lesions, and this is amplified by spatial neglect. However, we do not know the specific influence of hemianopia and space of perception on this phenomenon. Here, we analyzed the respective influences of spatial neglect, hemianopia and hemispace on the subjective vertical in patients with right hemispheric stroke. Twelve neglect patients with and 5 without hemianopia were compared to 3 non-neglect patients with and 13 without hemianopia. They had to match a luminous rod to the vertical, either in the mid-sagittal plane or in the right or the left hemispace. Patients showed a counter-clockwise deviation, and this was exaggerated by both neglect and hemianopia. In patients with neglect, the error was greater in the left hemispace. In conclusion, neglect and hemianopia had additive effects on the contralesional bias of the subjective vertical.
患者的大脑半球损伤后，常常会出现垂直知觉向病变对侧移位的情况，且这种情况会因空间忽视而加重。但是，我们尚不清楚偏盲和知觉空间对这一现象的具体影响。在此，我们分析了空间忽视、偏盲和半空间对右侧大脑半球卒中患者主观垂直的各自影响。我们将 12 名存在忽视且无偏盲的忽视患者与 5 名存在忽视但有偏盲的患者以及 3 名非忽视且无偏盲的患者和 13 名非忽视但有偏盲的患者进行了对比。让他们将发光棒与垂直线对齐，这些线要么位于正中矢状面，要么位于右侧或左侧半空间。结果患者表现出逆时针偏差，且这种偏差会因忽视和偏盲而加重。在忽视患者中，左侧半空间的误差更大。总之，忽视和偏盲对视错觉的对侧偏向有累加效应。
Zotero 插件