A rational model of spatial neglect

Tia Gong*, Bonan Zhao, Robert D McIntosh, Christopher G Lucas

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

Spatial neglect has been a phenomenon of interest for perceptual and neuropsychological researchers for decades. However, the underlying cognitive processes remain unclear. We provide a Bayesian framework for the classic line bisection task in spatial neglect, regarding it as rational inferences in the face of uncertain information. A Bayesian observer perceives the left and right endpoints of a line with uncertainty, and leverages prior expectations about line lengths to compensate for this uncertainty. This Bayesian model provides a basis for characterizing different patterns of behavior. Our model also captures the paradoxical cross-over effect observed in earlier studies as a natural outcome when uncertainty is high and the observer falls back on priors. It provides measures that correlate well with measures from other neglect tests, and can accurately distinguish stroke patients from healthy controls. It has the potential to facilitate spatial neglect studies and inform clinical decisions.
Original languageEnglish
Title of host publicationProceedings of the 45th Annual Meeting of the Cognitive Science Society
EditorsMicah Goldwater, Florencia Anggoro, Brett Hayes, Desmond Ong
PublisherThe Cognitive Science Society
Pages896-902
Number of pages7
Volume45
Publication statusPublished - 29 Jul 2023
Event45th Annual Conference of the Cognitive Science Society: Cognition in Context - ICC Sydney, Sydney, Australia
Duration: 26 Jul 202329 Jul 2023
https://cognitivesciencesociety.org/cogsci-2023/

Publication series

NameProceedings of the Cognitive Science Society
PublisherCognitive Science Society
ISSN (Electronic)1047-1316

Conference

Conference45th Annual Conference of the Cognitive Science Society
Abbreviated titleCogSci 2023
Country/TerritoryAustralia
CitySydney
Period26/07/2329/07/23
Internet address

Keywords / Materials (for Non-textual outputs)

  • spatial neglect
  • visual neglect
  • line bisection
  • attention
  • perception
  • Bayes

Fingerprint

Dive into the research topics of 'A rational model of spatial neglect'. Together they form a unique fingerprint.

Cite this