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Do gaze and non-gaze stimuli trigger different spatial interference effects? It depends on stimulus perceivability.

Zhe Chen1, Rebecca H Thomas1, Makayla S Chen1

  • 1School of Psychology, Speech and Hearing, University of Canterbury, Christchurch, New Zealand.

Frontiers in Psychology
|September 30, 2022
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Summary

Stimulus perceivability is key when comparing gaze and non-gaze stimuli effects on attention. Controlling for this factor reveals similar spatial interference effects across different target types, highlighting its importance in attentional research.

Keywords:
arrowsattentional zoomgazespatial congruency effectsstimulus perceivability

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Neuroscience

Background:

  • Gaze perception research shows mixed results regarding attentional effects.
  • Understanding attentional mechanisms requires careful control of stimulus properties.

Purpose of the Study:

  • To investigate the role of stimulus perceivability in spatial interference effects.
  • To compare attentional effects of gaze versus non-gaze stimuli.

Main Methods:

  • Utilized a spatial Stroop task with speeded responses.
  • Employed targets such as eyes, symbols, and arrows.
  • Manipulated stimulus perceivability across experiments.

Main Results:

  • Spatial congruency effects varied by target type when perceivability was uncontrolled.
  • Comparable congruency effects were observed when stimulus perceivability was controlled.
  • Attentional zoom is closely linked to stimulus perceivability.

Conclusions:

  • Stimulus perceivability is a critical factor influencing spatial interference.
  • Controlling for perceivability is essential for accurate inferences about gaze vs. non-gaze stimuli processing.
  • Future research should account for attentional zoom and stimulus perceivability.