MRI Guided Brain Stimulation without the Use of a Neuronavigation System

Figure 5

Localization of a scalp position above V5 in the left hemisphere. The axial cut through the Brain Voyager mesh was positioned to reveal the most active voxel in left V5. The lines drawn on the mesh show the POIs that were used to identify the scalp location corresponding to left V5. Blue: nasion to transverse plane, white: tragus to transverse plane, red: intersection of nasion vector and transverse plane to intersection of tragus vector and transverse plane, and green: extension of the vector to the scalp position above area V5. Orange regions indicate areas of functional activation in response to the V5 localization scans. See the main text for a detailed description of this procedure.