@misc{indiciae2d4159f2e6eb,
  title = {Single unit activity during behavioral conditioning: arousal effects.},
  author = {D Sparks and R Travis},
  year = {1967},
  doi = {10.1016/0024-3205(67)90313-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4965926/},
  note = {Source identifier: 4965926}
}