Author response: DBS of the PSA and the VIM in essential tremor: A randomized, double-blind, crossover trial.

We thank Prof. Sidiropoulos for commenting on our article.1 Indeed, other studies targeted the posterior subthalamic area (PSA) more ventrally, and there might exist a certain degree of current spread from the ventral intermediate nucleus of the thalamus (VIM) into the PSA and vice versa, especially at higher amplitudes. However, we2 and others3 implanted contacts at similar z coordinates before.