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Related Experiment Videos

Processing scene context: fast categorization and object interference.

Olivier R Joubert1, Guillaume A Rousselet, Denis Fize

  • 1Université, Toulouse 3, CerCo, UPS, France. olivier.joubert@cerco.ups-tlse.fr

Vision Research
|October 31, 2007
PubMed
Summary
This summary is machine-generated.

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Scene context is processed very quickly, influencing object identification. This rapid scene gist extraction happens in parallel with object processing, suggesting early interactions in visual perception.

Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Human Computer Interaction

Background:

  • The influence of scene background on object identification remains debated.
  • It is unclear if object processing precedes scene context analysis or vice-versa.

Purpose of the Study:

  • To assess the processing time of scene context.
  • To investigate the interplay between scene gist and object categorization.

Main Methods:

  • A go/no-go rapid visual categorization task was employed.
  • Participants categorized 'man-made' vs. 'natural' environments flashed for 26 ms.

Main Results:

  • Scene categorization was highly accurate (96%) with short reaction times (390 ms).

Related Experiment Videos

  • Global context categorization is as fast as object categorization and faster than detailed contextual categorization.
  • Salient, incongruent objects impaired context categorization efficiency.

    • Conclusions:

    • Global scene gist extraction is remarkably fast and occurs in parallel with object processing.
    • Early interactions between scene and object representations support contextual influences on object identification.