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Related Experiment Videos

Perceived reachability in hemispace.

Carl Gabbard1, Diala Ammar, Luis Rodrigues

  • 1Texas A&M University, College Station, TX 77843-4243, USA. c-gabbard@tamu.edu

Brain and Cognition
|May 28, 2005
PubMed
Summary
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People often overestimate how far they can reach. However, this study found that participants underestimated reachability in their peripheral vision, suggesting a role for confidence.

Area of Science:

  • Cognitive psychology
  • Neuroscience
  • Human motor control

Background:

  • Previous research indicates an overestimation bias in perceived movement accuracy.
  • Reaching tasks have predominantly focused on the midline visual field.

Purpose of the Study:

  • To investigate reachability judgments across different visual fields (midline, right, and left).
  • To explore the influence of visual field on movement perception biases.

Main Methods:

  • Participants (strong right-handers) judged the reachability of visual targets.
  • Targets were projected onto a table surface at midline, right visual field (RVF), and left visual field (LVF).

Main Results:

  • Midline results confirmed previous findings of an overestimation bias.

Related Experiment Videos

  • Reachability was underestimated in both the right visual field (RVF) and left visual field (LVF).

    • Conclusions:

    • Visual field significantly impacts movement perception biases.
    • Underestimation in peripheral vision may relate to cognitive factors like actor confidence, perceived ability, and task demands.