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Updated: Jan 12, 2026
13:51
Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
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Brief Encounters with Real Objects Modulate the Medial Parietal But Not Occipitotemporal Cortex
Susan G Wardle1, Beth Rispoli2,3, Vinai Roopchansingh4
1Section on Learning and Plasticity, Laboratory of Brain and Cognition, National Institute of Mental Health, NIH, Bethesda, Maryland 20814 susan.wardle@nih.gov.
Summary
Real-world object exploration does not alter visual brain representations but engages memory regions. This suggests the brain separately codes visual appearance from real-world experience for object recognition.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Perception
Background:
- Humans excel at recognizing objects from images, but the impact of real-world experience on brain representations of photographed objects remains unclear.
- Understanding how prior physical interaction influences visual processing of object images is crucial for cognitive science.
Purpose of the Study:
- To investigate how brief real-world manual exploration of objects affects their neural representation during subsequent image viewing.
- To determine if tactile and motor experiences modulate visual object processing in the brain.
Main Methods:
- Developed a paradigm involving manual object exploration before functional magnetic resonance imaging (fMRI) scans.
- Participants (40) viewed images of objects after brief real-world interaction with them.
- Analyzed brain activity in object-responsive visual cortex and medial parietal regions.
Main Results:
- Visual representations in the lateral occipital and ventral temporal cortex were not modulated by prior real-world exploration.
- Repetition suppression of the BOLD response was observed in visual areas, indicating adaptation to repeated image presentations.
- Real-world experience increased activation in the medial parietal and posterior cingulate cortex, areas linked to memory encoding and retrieval.
Conclusions:
- The human brain appears to maintain separable neural codes for an object's visual appearance and its associated real-world experiences.
- Medial parietal and posterior cingulate cortex activation suggests familiarity modulation is not stimulus or task-specific.
- Object recognition involves distinct processing of visual form and experiential associations, impacting computational models and our understanding of object representation.
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