Figure 2. Confirmation of electrode position with imaging.
Co-registration of anode midposition between C3/T3 using 10–20 EEG systems with a T1-weighted dataset demonstrates it to be centered over the caudal end of the left primary motor cortex in a healthy volunteer. The position and dimensions of the anode depicted by the blue circle appears to completely cover the regions of maximal activation, depicted by colored dots, seen during swallowing tasks on fMRI across a group of healthy elderly volunteers.