Purchase this article with an account.
or
Journal of Vision. 2010; 10(7):472. https://doi.org/10.1167/10.7.472
Journal of Vision. 2009; 9(8):559. https://doi.org/10.1167/9.8.559
Journal of Vision. 2006; 6(6):177. https://doi.org/10.1167/6.6.177
This PDF is available to Subscribers Only