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Can actions affect perceptual processing?

J Müsseler1, S Steininger, P Wühr

  • 1Max-Planck-Institut für Psychologische Forschung, Amalienstr. 33, D-80799 München, Germany. muesseler@mpipf-muenchen.mpg.de

The Quarterly Journal of Experimental Psychology. A, Human Experimental Psychology
|February 24, 2001
PubMed
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Actions can specifically impair perception, even when attentiveness is maintained. This study found reduced perceptual sensitivity (d-prime) during compatible action execution, suggesting actions directly impact how we see.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human-Computer Interaction

Background:

  • Action execution has been linked to perceptual impairments.
  • Previous research questioned if these impairments stem from reduced sensitivity or attentional deficits.

Purpose of the Study:

  • To investigate whether actions specifically impact perceptual sensitivity using Signal Detection Theory.
  • To determine if observed impairments in arrow identification during keypresses are due to changes in sensitivity (d') or response bias (c).

Main Methods:

  • Three experiments were conducted applying Signal Detection Theory.
  • Participants identified arrows presented during compatible and incompatible keypress actions.
  • Analysis focused on sensitivity (d') and bias (c) measures.

Related Experiment Videos

Main Results:

  • Perceptual sensitivity (d') was significantly lower for arrows presented during compatible keypresses compared to incompatible ones.
  • The bias measure (c) showed minimal differences between conditions.
  • Perceptual degradation was higher in the compatible condition, specifically during central movement command generation.

Conclusions:

  • Action execution directly affects perceptual processing, not just attentiveness.
  • The impairment is specific to the timing of motor command generation.
  • These findings demonstrate a specific influence of motor actions on sensory perception.