@misc{indiciae8055bc228947,
  title = {A common neural system signaling the need for behavioral changes.},
  author = {Markus Ullsperger and Kirsten G Volz and D Yves von Cramon},
  year = {2004},
  doi = {10.1016/j.tics.2004.08.013},
  url = {https://pubmed.ncbi.nlm.nih.gov/15450505/},
  note = {Source identifier: 15450505}
}