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Generating Strictly Controlled Stimuli for Figure Recognition Experiments
Published on: March 18, 2019
Famous faces but not remembered spaces influence vertical line bisections.
Joshua D Claunch1, Adam D Falchook, John B Williamson
1Clinical Sciences, Florida State University College of Medicine, Florida State University, Tallahassee, FL, USA. jdc10@med.fsu.edu
Journal of Clinical and Experimental Neuropsychology
|July 17, 2012
Summary
Facial recognition tasks, engaging the ventral visual stream, bias attention upward. Spatial localization tasks did not alter this upward bias, suggesting further research is needed for egocentric spatial tasks.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Visual Perception
Background:
- The ventral visual stream is crucial for facial and object recognition, while the dorsal stream handles spatial relationships.
- Lesions in the ventral stream can cause visual inattention to the upper visual field, and dorsal stream lesions to the lower field.
Purpose of the Study:
- To investigate if activating the ventral visual stream induces an upward attentional bias.
- To test if activating the dorsal stream induces a downward attentional bias.
- To assess these biases using vertical line bisection tests.
Main Methods:
- Twelve healthy right-handed participants performed vertical line bisection tasks.
- Stimuli included famous faces and dots presented above and below the bisection line.
- Tasks involved recognition/recall of faces or dot locations, alongside control conditions.
Main Results:
- An upward attentional bias was consistently observed across all conditions.
- This upward bias significantly increased during face recognition and recall tasks.
- The dot localization task did not significantly alter the vertical attentional bias.
Conclusions:
- Face recognition, potentially activating the ventral stream, enhances upward attentional bias.
- The allocentric dot localization task's failure to affect bias may stem from task selection.
- Further research on egocentric spatial localization tasks is warranted to understand their effect on attentional bias.
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