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.
Bibliographical noteFunding Information:
KD was supported by the Natural Sciences and Engineering Research Council (NSERC), and the Michael Smith Foundation for Health Research (MSFHR). AK was supported by NSERC, a MSFHR Senior Scholar award, the Human Early Learning Partnership, and the Hampton Foundation. JB was supported by a Canada Research Chair and MSFHR Senior Scholarship. WB was supported by NSERC. Thank you to SL for time and dedication to this project.
Copyright 2009 Elsevier B.V., All rights reserved.
- Balint syndrome
- Eye movements