@misc{indiciaec08020e407fe,
  title = {Slow brain potentials and the "tunnel effect".},
  author = {L Stegagno and N Birbaumer and T Elbert and W Lutzenberger and B Rockstroh},
  year = {1986},
  doi = {10.3109/00207458608985639},
  url = {https://pubmed.ncbi.nlm.nih.gov/3700002/},
  note = {Source identifier: 3700002}
}