Purchase this article with an account.
or
Journal of Vision. 2015; 15(12):878. https://doi.org/10.1167/15.12.878
Journal of Vision. 2014; 14(10):779. https://doi.org/10.1167/14.10.779
Journal of Vision. 2013; 13(9):653. https://doi.org/10.1167/13.9.653
This PDF is available to Subscribers Only