Purchase this article with an account.
or
Journal of Vision. 2009; 9(8):400. https://doi.org/10.1167/9.8.400
Journal of Vision. 2006; 6(13):67. https://doi.org/10.1167/6.13.67
Journal of Vision. 2005; 5(8):717. https://doi.org/10.1167/5.8.717
This PDF is available to Subscribers Only