@misc{indiciaeff1fbb0b9111,
  title = {Direction-specific improvement in motion discrimination.},
  author = {K Ball and R Sekuler},
  year = {1987},
  doi = {10.1016/0042-6989(87)90011-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/3660656/},
  note = {Source identifier: 3660656}
}