A computational vector-map model of neonate saccades: Modulating the externality effect through refraction periods

Peter A. Jansen, Chris M. Fiacconi, Laura C. Gibson

Research output: Contribution to journalArticle

1 Scopus citations


The present study develops an explicit and predictive computational model of neonate saccades based on the interaction of several simple mechanisms, including the tendency to fixate towards areas of high contrast, and the decay and recovery of a world-centered contrast representation simulating a low-level inhibition of return mechanism. Emergent properties similar to early visual behaviors develop, including the externality effect (or tendency to focus on external then internal features). The age-associated progression of this effect is modulated by the decay period of the model's contrast representation, where the high-level behavior of either scanning broadly or locally is modulated by a single decay parameter.

Original languageEnglish (US)
Pages (from-to)2551-2558
Number of pages8
JournalVision Research
Issue number23
StatePublished - Nov 23 2010
Externally publishedYes



  • Computational model
  • Externality effect
  • Infant
  • Neonate
  • Saccade

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

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