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Related Experiment Video

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How to Create and Use Binocular Rivalry
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Published on: November 10, 2010

Unconscious numerical priming despite interocular suppression.

Bahador Bahrami1, Petra Vetter, Eva Spolaore

  • 1Institute of Cognitive Neuroscience, University College London, London, United Kingdom. bbahrami@ucl.ac.uk

Psychological Science
|April 29, 2010
PubMed
Summary
This summary is machine-generated.

Unconscious numerical stimuli, even when invisible due to interocular suppression, can still influence behavior. This study demonstrates that both symbolic and nonsymbolic invisible primes prime subsequent enumeration tasks.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Interocular competition can render stimuli invisible, raising questions about their cognitive processing.
  • The influence of suppressed, high-level stimuli on perception and behavior remains debated.

Purpose of the Study:

  • To investigate if invisible symbolic and nonsymbolic numerical stimuli can elicit priming effects.
  • To determine if high-level processing occurs for stimuli suppressed via interocular competition.

Main Methods:

  • Established objective inability to discriminate invisible numerical primes using interocular suppression.
  • Assessed priming effects by having participants enumerate visible targets after exposure to invisible numerical primes (symbolic or nonsymbolic).

Main Results:

  • Invisible symbolic and nonsymbolic numerical primes induced significant priming effects.
  • Priming effects were specific to the numerical distance between prime and target.
  • Larger primes interfered with enumeration, while smaller or equal primes facilitated it.

Conclusions:

  • Provides clear evidence for high-level processing of stimuli rendered invisible by interocular suppression.
  • Demonstrates that unconscious numerical stimuli can influence cognitive tasks like enumeration.