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Normative data for an expanded set of stimuli for testing high-level influences on object perception: OMEFA-II
Colin S Flowers1, Kimberley D Orsten-Hooge2, Barnes G L Jannuzi3
1Department of Psychology, University of Arizona, Tucson, Arizona, United States of America.
Plos One
|August 16, 2020
Summary
Familiar object configurations, not just familiar parts, influence object detection. This study expands stimuli to investigate how past experience shapes our perception of objects and their integration with brain networks.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- Past experience significantly impacts object detection.
- Familiar configurations, rather than familiar parts, guide figure assignment.
- The perirhinal cortex is implicated in familiar configuration effects.
Purpose of the Study:
- To present normative data for an expanded stimulus set investigating past experience effects on object detection.
- To enhance the utility of stimuli for behavioral, neuropsychological, and neuroimaging experiments.
- To explore how parts and wholes are integrated in object recognition.
Main Methods:
- Expanded stimulus set from 24 to 48 base stimuli.
- Measured inter-subject agreement on object interpretation for Intact, Part-Rearranged (PR) Upright, and Inverted PR displays under long exposure.
- Utilized bipartite displays with articulated borders for figure assignment investigation.
Main Results:
- Familiar object configurations, not just familiar parts, act as a prior for figure assignment.
- High inter-subject agreement operationally defines a familiar configuration.
- The expanded stimulus set provides robust normative data.
Conclusions:
- Past experience, specifically familiar configurations, is crucial for object detection.
- The new stimulus set facilitates research on part-whole integration and brain-behavior interactions.
- This resource aids in studying cross-border competition and individual differences in object perception.
