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The attentional repulsion effect and relative size judgments.

Francesca C Fortenbaugh1,2, Alexander Sugarman3, Lynn C Robertson4

  • 1GRECC & Research Services, Department of Veterans Affairs, VA Boston Healthcare System, Boston, MA, USA. Francesca_Fortenbaugh@hms.harvard.edu.

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The Attentional Repulsion Effect (ARE) causes perceived shifts of stimuli away from cued locations. This study shows the ARE distorts both shape and location, suggesting a warping of visual space impacting perception.

Keywords:
Attentional repulsion effectExogenous attentionInvoluntary attentionPseudoneglectSize perceptionVisual space

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Involuntary attention shifts can mislocalize objects.
  • The Attentional Repulsion Effect (ARE) describes stimuli shifting away from peripheral cues.
  • Previous ARE studies focused on single dimensions (position or shape) and directions.

Purpose of the Study:

  • To assess the ARE's magnitude using a novel stimulus configuration.
  • To investigate if the ARE affects multiple spatial dimensions simultaneously.
  • To determine if the ARE influences perceived shape and location.

Main Methods:

  • Participants judged the relative width or height of rectangles presented peripherally.
  • Peripheral pre-cues were employed in Experiments 1 and 2 to elicit the ARE.
  • Experiment 3 controlled for potential confounds like eye movements by comparing peripheral vs. fixation stimuli.

Main Results:

  • Equivalent perceived expansions in rectangle width and height were observed due to pre-cues.
  • Stimulus location shifts demonstrated distortions in perceived shape and location.
  • Rectangles appeared larger in the periphery, indicating the ARE is not solely due to eye movements.

Conclusions:

  • The Attentional Repulsion Effect (ARE) impacts multiple aspects of spatial and object perception.
  • Results support a localized, symmetrical warping of visual space induced by attention shifts.
  • The ARE demonstrably affects both perceived location and object dimensions.