Dalrymple Kirsten A, Bischof Walter F, Cameron David, Barton Jason J S, Kingstone Alan
Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4.
Vision Res. 2009 Jul;49(14):1901-8. doi: 10.1016/j.visres.2009.05.002. Epub 2009 May 19.
Simultanagnosia is a neuropsychological disorder characterized by a restriction of visuospatial attention. In addition, patients are able to identify local elements of a scene, but not the global whole. This may be due to a failure to scan and assemble local elements into a global whole (i.e. connect-the-dots). We monitored the eye movements of a simultanagnosic patient while she identified local and global elements of hierarchical letters. Scanning each local element was not necessary, nor sufficient, for successful global level identification. Our results argue against a connect-the-dots strategy of global identification and suggest that residual global processing may be occurring.
同时失认症是一种以视觉空间注意力受限为特征的神经心理障碍。此外，患者能够识别场景的局部元素，但无法识别整体。这可能是由于无法将局部元素扫描并整合为一个整体（即连点成图）。我们在一名同时失认症患者识别分层字母的局部和整体元素时监测了她的眼动。成功识别整体水平并不需要也不充分扫描每个局部元素。我们的结果反对整体识别的连点成图策略，并表明可能存在残余的整体加工。
