From: A solid frame for the window on cognition: Modeling event-related pupil responses Journal of Vision. 2016;16(3):28. doi:10.1167/16.3.28 Figure Legend: Model accuracy. The full model with both LTI systems explained around 60% of the variance. A pure steady-state model, as well as models with only one of the two systems, explained considerably less variance. A model in which the first LTI is described by a Gaussian smoothed biexponential function explained the same of amount of variance as the model in which both RFs are described by gamma pdfs. Date of download: 10/11/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.