In the paper by Thurtell and colleagues,1 two patients with epilepsy are described in whom in one stimulation over the frontal eye field (FEF) resulted in dysconjugate contraversive horizontal eye movements and in the other similar eye movements were observed as a result of focal seizures (see page 683). The neural system controlling eye movements, particularly rapid conjugate versive movements, called saccades, is one of the most thoroughly understood neural circuits in the brain. It contains a number of cortical centres, …