Purchase this article with an account.
or
Journal of Vision. 2009; 9(3):10. https://doi.org/10.1167/9.3.10
Journal of Vision. 2008; 8(6):956. https://doi.org/10.1167/8.6.956
Journal of Vision. 2007; 7(15):108. https://doi.org/10.1167/7.15.108
This PDF is available to Subscribers Only