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Updated: Jun 21, 2026
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Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
Published on: June 3, 2013
Category-specific organization in the human brain does not require visual experience
Bradford Z Mahon1, Stefano Anzellotti, Jens Schwarzbach
1Center for Mind/Brain Sciences (CIMeC), University of Trento, Rovereto, TN 38068, Italy. mahon@rcbi.rochester.edu
Neuron
|August 15, 2009
Summary
Brain regions processing objects are organized similarly in sighted and blind individuals, suggesting innate brain structures for object knowledge independent of visual experience.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Neuroimaging
Background:
- The ventral visual pathway exhibits specialized regions for processing living and nonliving stimuli in sighted adults.
- The origins of this neural specialization, whether experience-driven or innate, remain a subject of debate.
Purpose of the Study:
- To investigate whether the category preferences observed in the ventral visual pathway develop independently of visual experience.
- To determine if innate constraints influence the organization of object knowledge.
Main Methods:
- Functional magnetic resonance imaging (fMRI) was employed to measure brain activity.
- Blood oxygen-level dependent (BOLD) responses were analyzed in sighted adults and adults blind since birth while they processed living and nonliving stimuli.
Main Results:
- Both blind and sighted participants showed similar category preferences in the ventral stream.
- Medial fusiform gyrus exhibited greater BOLD responses to nonliving stimuli compared to animals.
- Lateral occipital cortex showed differential BOLD responses, with greater activation for animals over nonliving stimuli.
Conclusions:
- The medial-to-lateral organization of conceptual domains in the ventral visual pathway does not necessitate visual experience.
- Findings suggest that innate, domain-specific constraints shape the brain's organization of object knowledge from birth.
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