@misc{indiciae7577e9e14ccd,
  title = {Pupillary and cardiac activity during visual attention.},
  author = {W L Libby and B C Lacey and J I Lacey},
  year = {1973},
  doi = {10.1111/j.1469-8986.1973.tb00526.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4702521/},
  note = {Source identifier: 4702521}
}