Global perception in simultanagnosia is not as simple as a game of connect-the-dots

Kirsten A. Dalrymple; Walter F. Bischof; David Cameron; Jason J.S. Barton; Alan Kingstone

doi:10.1016/j.visres.2009.05.002

Global perception in simultanagnosia is not as simple as a game of connect-the-dots

Kirsten A. Dalrymple, Walter F. Bischof, David Cameron, Jason J.S. Barton, Alan Kingstone

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	1901-1908
Number of pages	8
Journal	Vision Research
Volume	49
Issue number	14
DOIs	https://doi.org/10.1016/j.visres.2009.05.002
State	Published - Jul 2009
Externally published	Yes

Bibliographical note

Funding 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.

Keywords

Attention
Balint syndrome
Eye movements
Perception
Simultanagnosia

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title = "Global perception in simultanagnosia is not as simple as a game of connect-the-dots",

abstract = "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.",

keywords = "Attention, Balint syndrome, Eye movements, Perception, Simultanagnosia",

author = "Dalrymple, {Kirsten A.} and Bischof, {Walter F.} and David Cameron and Barton, {Jason J.S.} and Alan Kingstone",

note = "Funding 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.",

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AU - Dalrymple, Kirsten A.

AU - Bischof, Walter F.

AU - Cameron, David

AU - Barton, Jason J.S.

AU - Kingstone, Alan

N1 - Funding 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.

PY - 2009/7

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N2 - 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.

AB - 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.

KW - Attention

KW - Balint syndrome

KW - Eye movements

KW - Perception

KW - Simultanagnosia

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Global perception in simultanagnosia is not as simple as a game of connect-the-dots

Abstract

Bibliographical note

Keywords

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