@misc{indiciae289530464c9c,
  title = {Event related slow potential changes in human brain stem.},
  author = {W C McCallum and D Papakostopoulos and R Gombi and A L Winter and R Cooper and H B Griffith},
  year = {1973},
  doi = {10.1038/242465a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4700903/},
  note = {Source identifier: 4700903}
}