obtencion de coordenadas talairach a partir de mapas corticales de area visual con resonancia magnetica funcional

Abstract

Functional magnetic resonance imaging gives detailed information on the location of brain activity. Due to the functional-anatomic difference between patients, discrepancies arouse concerning the location of activation areas. To solve this problem, a standard positioning system called Talairach Coordinates was used. The fMRI mapping of visual cortex was performed in 14 healthy volunteers, using colored circles visual stimulation. Using fMRI post processing software, a combined image of the 14 volunteers fMRI was computed. The main activation voxel is (16, -93, 7), that corresponds to Brodmann area 17 (primary visual area V1). Correlation of the primary visual area (V1) obtained through fMRI with Brodmann area 17, only proven from the classical literary neurophysiological viewpoint, was confirmed.