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Mack ML, Palmeri TJ. The timing of visual object categorization. Front Psychol. 2011;2:165doi: 10.3389/fpsyg.2011.00165.
Mack, M. L., & Palmeri, T. J. (2011). The timing of visual object categorization. Frontiers in psychology, 2165. https://doi.org/10.3389/fpsyg.2011.00165
Mack, Michael L, and Palmeri, Thomas J. "The timing of visual object categorization." Frontiers in psychology vol. 2 (2011): 165. doi: https://doi.org/10.3389/fpsyg.2011.00165
Mack ML, Palmeri TJ. The timing of visual object categorization. Front Psychol. 2011 Jul 15;2:165. doi: 10.3389/fpsyg.2011.00165. eCollection 2011. PMID: 21811480; PMCID: PMC3139955.
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Front Psychol. 2011 Jul 15;2:165. doi: 10.3389/fpsyg.2011.00165. eCollection 2011.

The timing of visual object categorization.

Frontiers in psychology

Michael L Mack, Thomas J Palmeri

Affiliations

  1. Department of Psychology, The University of Texas at Austin Austin, TX, USA.

PMID: 21811480 PMCID: PMC3139955 DOI: 10.3389/fpsyg.2011.00165

Abstract

AN OBJECT CAN BE CATEGORIZED AT DIFFERENT LEVELS OF ABSTRACTION: as natural or man-made, animal or plant, bird or dog, or as a Northern Cardinal or Pyrrhuloxia. There has been growing interest in understanding how quickly categorizations at different levels are made and how the timing of those perceptual decisions changes with experience. We specifically contrast two perspectives on the timing of object categorization at different levels of abstraction. By one account, the relative timing implies a relative timing of stages of visual processing that are tied to particular levels of object categorization: Fast categorizations are fast because they precede other categorizations within the visual processing hierarchy. By another account, the relative timing reflects when perceptual features are available over time and the quality of perceptual evidence used to drive a perceptual decision process: Fast simply means fast, it does not mean first. Understanding the short-term and long-term temporal dynamics of object categorizations is key to developing computational models of visual object recognition. We briefly review a number of models of object categorization and outline how they explain the timing of visual object categorization at different levels of abstraction.

Keywords: computational modeling; object categorization; object recognition; reaction times; temporal dynamics; time course

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