Summary
Changes in velocity sensitivity, receptive field (RF) position, and RF size were investigated in long oblique penetrations crossing the 17–18 border. The penetrations were histologically reconstructed and the border determined by cytoarchitectonics. In cortex subserving central and paracentral vision change in velocity sensitivity allowed a reasonable physiological identification of the 17–18 border. The physiological border correlates well with the histological border zone, best with its medial edge. Changes in RF position and RF size are of little use for physiological identification of the border in this region. In this cortical region area 18 representation of the vertical meridian (VM) has a high magnification factor. In cortex subserving peripheral vision, the change in velocity sensitivity was small and the change in RF position coincided with the cytoarchitectonics.
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Research Fellow of the National Research Council of Belgium
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Orban, G.A., Kennedy, H. & Maes, H. Functional changes across the 17–18 border in the cat. Exp Brain Res 39, 177–186 (1980). https://doi.org/10.1007/BF00237548
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DOI: https://doi.org/10.1007/BF00237548