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Standard body-space relationships: Fingers hold spatial information
Daniele Romano1, Francesco Marini2, Angelo Maravita1
1University of Milano Bicocca, Department of Psychology, piazza Ateneo Nuovo 1, 20126 Milan, Italy; NeuroMi - Milan Center for Neuroscience, Milan, Italy.
Cognition
|May 23, 2017
Summary
The brain stably associates specific body parts with spatial locations. For example, the index finger is linked to
Area of Science:
- Neuroscience
- Somatosensory processing
- Body representation
Background:
- The brain continuously updates body representation for sensorimotor interaction.
- Stable features of body representation remain largely unexplored.
- Understanding stable body maps is crucial for somatosensory research.
Purpose of the Study:
- To investigate stable associations between body parts and spatial locations.
- To test the hypothesis of preferential body part-location links.
Main Methods:
- Three experiments were conducted using tactile sensory discrimination tasks.
- Tasks were performed with and without visual input.
- Implicit conceptual association tasks were also employed.
Main Results:
- Consistent preferential associations were found between the index finger and top positions.
- A stable link was observed between the thumb and bottom positions.
- These associations held true across tactile and conceptual tasks, with and without vision.
Conclusions:
- Body parts and spatial locations exhibit stable, preferential associations.
- Body representation contains intrinsic spatial information beyond dynamic mapping.
- These stable links contribute significantly to somatosensory spatial processing.
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