Journal of Vision. 2009; 9(8):638. https://doi.org/10.1167/9.8.638

Journal of Vision. 2008; 8(6):661. https://doi.org/10.1167/8.6.661

Journal of Vision. 2007; 7(9):745. https://doi.org/10.1167/7.9.745

Journal of Vision. 2007; 7(9):746. https://doi.org/10.1167/7.9.746

Journal of Vision. 2006; 6(6):373. https://doi.org/10.1167/6.6.373

Journal of Vision. 2006; 6(6):374. https://doi.org/10.1167/6.6.374