@misc{indiciae70091c1855a3,
  title = {Task difficulty and the specificity of perceptual learning.},
  author = {M Ahissar and S Hochstein},
  year = {1997},
  doi = {10.1038/387401a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/9163425/},
  note = {Source identifier: 9163425}
}