Integrated Contextual Representation For Objects’

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  • 1. Integrated Contextual Representation for Objects’ Identities and Their Locations Nurit Gronau, Maital Neta, and Moshe Bar Journal of Cognitive Neuroscience 2008
  • 2.
    • The influence of contextual processes on object recognition may stem from multiple sources of information.
      • Object identities
      • Ex: an office typically contains a desk, a desk lamp, and a computer
      • Locations
      • Ex: phones are typically placed above, and not below desks
    • Context frame: object identities + locations
  • 3.
    • Not all empirical findings are necessarily in agreement with this concept.
    • Contextual associations between visual objects can be independent of spatial location representations.
      • Context: lack of locations
        • Ex: priming effect
      • Context: lack of object identities
        • Ex: contextual cuing
  • 4.
    • We propose that a unified context frame encompasses both these two subtypes of contextual associations.
    • A global contextual representation can provide a highly coherent and meaningful representation of the visual environment.
  • 5. Three critical cortex for context frame
    • inferior prefrontal cortex (IPC): semantic and conceptual tasks
    • medial-temporal lobe regions (hippocampus, parahippocampal cortex [PHC]): contextual associative processing
    • lateral occipital complex (LOC): object-selective regions
  • 6. EXP Task: 2 AFC decision task
  • 7. Behavioral results
  • 8.  
  • 9. General discussion
    • Our results demonstrate that identity-based and location-based contextual factors interact with each other during visual object recognition.
  • 10.