Comment on

• Responses of primary visual cortical neurons to binocular disparity without depth perception.

  Cumming BG, Parker AJ. Cumming BG, et al. Nature. 1997 Sep 18;389(6648):280-3. doi: 10.1038/38487. Nature. 1997. PMID: 9305841
• Vergence eye movements in response to binocular disparity without depth perception.

  Masson GS, Busettini C, Miles FA. Masson GS, et al. Nature. 1997 Sep 18;389(6648):283-6. doi: 10.1038/38496. Nature. 1997. PMID: 9305842