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Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
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Published on: December 4, 2013

Sensitivity to reflection and translation is modulated by objectness.

Marco Bertamini1

  • 1School of Psychology, Eleanor Rathbone Building, University of Liverpool, Liverpool L69 7ZA, UK. M.Bertamini@liverpool.ac.uk

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PubMed
Summary
This summary is machine-generated.

The salience of visual transformations like reflection and translation depends on figure-ground organization. Reflection is more noticeable within a surface, while translation is more salient across surfaces, demonstrating context

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Area of Science:

  • Visual perception
  • Cognitive psychology
  • Computational neuroscience

Background:

  • The detectability of transformations between visual contours is influenced by transformation type and figure-ground relationships.
  • Previous research using reaction time (RT) indicated reflection is salient within surfaces, and translation across surfaces.

Purpose of the Study:

  • To replicate and extend previous findings on contour transformation salience by incorporating sensitivity measures alongside RT.
  • To investigate the influence of figure-ground organization, specifically objectness, on the perception of reflection and translation.

Main Methods:

  • Utilized stereograms to unambiguously manipulate figure-ground relationships.
  • Measured both reaction time (RT) and sensitivity to assess the perception of reflection and translation.
  • Compared transformations within surfaces versus across surfaces, and within objects versus within holes.

Main Results:

  • The advantage for detecting reflection within a surface was consistent across all experiments.
  • Translation was more salient across surfaces in Experiment 1, but no similar advantage was found for translation within holes in Experiments 2-4.
  • Context, specifically objectness, robustly affects regularity detection, with differing interactions for reflection and translation.

Conclusions:

  • Figure-ground organization significantly impacts the perception of visual transformations.
  • The 'within-surface' advantage for reflection is a robust phenomenon.
  • The perception of translation is influenced by surface context, but not by the presence of 'holes' versus objects, suggesting objectness is a key factor.