@misc{indiciae1e675636a4ac,
  title = {P3a from visual stimuli: task difficulty effects.},
  author = {Galen F Hagen and James R Gatherwright and Brian A Lopez and John Polich},
  year = {2005},
  doi = {10.1016/j.ijpsycho.2005.08.003},
  url = {https://pubmed.ncbi.nlm.nih.gov/16253363/},
  note = {Source identifier: 16253363}
}