Cortical Areas in Man Participating in Somatosensory Discrimination of Microgeometric Surface Deviations and Macrogeometric Object Differences
It has been known for 100 years that the ability to reconstruct tactually sensed objects in the mind was often lost after lesions of the cerebral hemispheres in man (Hoffmann, 1884). Since then, to my knowledge, there has been no quantitative measurements published of the somatosensory sensation of microgeometric and macrogeometric object properties after anatomically verified brain lesions in man. Shape and size are macrogeometric objects properties. Microgeometric object properties are the small deviations present in the surface of objects and commonly referred to as roughness or smoothness.
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