Slow cortical potentials under conditions of uncontrollability.

@article{Rockstroh1979SlowCP,
  title={Slow cortical potentials under conditions of uncontrollability.},
  author={Brigitte Rockstroh and Thomas Elbert and Werner Lutzenberger and Niels Birbaumer},
  journal={Psychophysiology},
  year={1979},
  volume={16 4},
  pages={374-80}
}