Cortical activity in disparity vergence eye-movements: a fMRI study

Employing fMRI techniques, cortical activity related with disparity vergence eye movements has been identified. The gyri precentralis, the gyrus cinguli and the precuneus appeared to be involved in these eye movements under very different conditions. In addition, the prediction operator in vergence eye movements presented additional activity in all the previous regions plus the gyrus frontalis superior. From this preliminary study, at least at the cortical level, the vergence eye movements correspond mainly to voluntary movements and therefore employ the pathways of voluntary motor activity