@misc{indiciae24d35237a2fa,
  title = {Thresholds for movement direction: two directions are less detectable than one.},
  author = {G Mather and B Moulden},
  year = {1983},
  doi = {10.1080/14640748308402485},
  url = {https://pubmed.ncbi.nlm.nih.gov/6571322/},
  note = {Source identifier: 6571322}
}