Functionally separated networks for self-paced and externally-cued motor execution in Parkinson's disease: Evidence from deep brain recordings in humans. - Oliver Bichsel; Roger Gassert; Lennart Stieglitz; Mechtild Uhl; Heide Baumann-Vogel; Daniel Waldvogel; Christian R. Baumann; Lukas L. Imbach (NeuroImage, 2018)