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Related Experiment Videos

Gesturing and naming: the use of functional knowledge in object identification.

Daniel N Bub1, Michael E J Masson, Cindy M Bukach

  • 1University of Victoria, Victoria, British Columbia, Canada. dbub@uvic.ca

Psychological Science
|August 22, 2003
PubMed
Summary

Object identification relies on functional knowledge, particularly actions. Gesturing object use strongly influences identification, but naming does not, suggesting a causal role for functional knowledge in object recognition.

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Area of Science:

  • Cognitive Neuroscience
  • Psychology
  • Neuroscience

Background:

  • Functional imaging reveals premotor cortex activation when viewing manipulable objects.
  • This suggests object function knowledge, especially typical actions, is crucial for object identification.
  • The causal role of this functional knowledge in object identification requires further investigation.

Purpose of the Study:

  • To investigate the causal role of functional object knowledge in object identification.
  • To determine if gesturing object use or naming influences object identification.
  • To assess the recruitment of functional knowledge during object recognition tasks.

Main Methods:

  • Subjects learned gesture-color associations.
  • Object identification was tested using colors linked to functional gestures (congruent or incongruent).

Related Experiment Videos

  • Object identification was performed via gesturing and naming.

    • Main Results:

    • A significant congruency effect was observed when subjects gestured the object's use.
    • No congruency effect was found when subjects named the object.
    • Preliminary findings suggest object shape-evoked gestures aid object naming.

    Conclusions:

    • The developed procedure is a sensitive measure of functional knowledge recruitment and its causal role.
    • Functional knowledge is causally involved in object identification when actions are considered.
    • This recruitment is absent during object naming, though shape-based gestures contribute.