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Field of view affects reaching, not grasping.

S J Watt1, M F Bradshaw, S K Rushton

  • 1Department of Psychology, University of Surrey, Guildford, Surrey GU2 7XH, UK. s.watt@surrey.ac.uk

Experimental Brain Research
|January 9, 2001
PubMed
Summary

Restricting field of view (FOV) with goggles alters perception of object distance but not size. This impacts reaching behaviors, highlighting FOV

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Area of Science:

  • Visual perception
  • Motor control
  • Human factors engineering

Background:

  • Goggles that restrict the field of view (FOV) can alter object perception, making familiar objects appear smaller and nearer.
  • Understanding these perceptual changes is crucial for optimizing visuo-motor performance in various applications.

Purpose of the Study:

  • To investigate the impact of varying field sizes on distance and size estimations for reaching and grasping movements.
  • To determine if the observed effects of reduced FOV are due to a loss of binocular information.

Main Methods:

  • Subjects performed reaching and grasping tasks with goggles offering restricted fields of view (4°, 8°, 16°, 32°, 64°).
  • No visual or haptic feedback was provided during the experiments.
  • A second experiment compared binocular and monocular conditions with 8° and 64° FOV.

Main Results:

  • Decreasing FOV led to a reduced reaching distance.
  • Grasp size remained unaffected by changes in FOV.
  • The effects of FOV on reaching and grasping were independent of binocular vision.

Conclusions:

  • Reduced FOV significantly impacts reaching and grasping behaviors in dissociable ways.
  • Field size is a critical factor to consider in visuo-motor performance assessments and applications.

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