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Approaching stimuli bias attention in numerical space
Matthew R Longo1, Stella F Lourenco, Alex Francisco
1Department of Psychological Sciences, Birkbeck, University of London, United Kingdom. m.longo@bbk.ac.uk
Acta Psychologica
|May 26, 2012
Summary
Stimulus motion influences attention on the mental number line. Approaching numbers amplified the pseudoneglect bias, suggesting shared attention mechanisms between physical and numerical spaces.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Psychophysics
Background:
- Evidence suggests shared mechanisms for attention in physical and numerical spaces.
- Pseudoneglect, a leftward bias in line bisection, also occurs in numerical space (number bisection).
Purpose of the Study:
- To investigate how stimulus motion affects attention in numerical space.
- To explore the relationship between physical and numerical spatial attention.
Main Methods:
- A two-frame apparent motion paradigm was used to simulate approaching, receding, or static number pairs.
- Stimulus size changes between frames indicated motion, while final size was controlled.
Main Results:
- The magnitude of pseudoneglect increased significantly for approaching number pairs.
- This effect persisted even when the final stimulus size remained constant.
Conclusions:
- Perception of stimulus motion modulates attention along the mental number line.
- Findings support a connection between neural representations of physical space and numerical cognition.
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