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Hemispheric asymmetries in cognitive modelling : Connectionist modelling of unilateral visual neglect.

Research output: Contribution to journalJournal article

Published

Journal publication date04/2004
JournalPsychological Review
Journal number2
Volume111
Number of pages26
Pages283-308
Original languageEnglish

Abstract

Neglect is an acquired cognitive disorder characterized by a lack of processing of one side of a stimulus or representational space. There are hemispheric asymmetries in its cause and in its effects, but implemented computational models of neglect have tended not to incorporate this fact. The authors report a series of neural network simulations of the line-bisection task. They test the hypothesis that simple, neuroanatomically realistic principles of connectivity in the nervous system can produce emergent behaviors that capture a wide range of quantitative and qualitative data observed in neglect patients presenting with general visuospatial neglect. They demonstrate that exploring low-level architectural principles in implemented computational models is both a productive avenue of research and offers the most parsimonious explanations of behaviors observed in patients.