Potsdam Mind Research Repository

Reproducible Research

  • Increase font size
  • Default font size
  • Decrease font size
Home Research Topics Computational Modeling Risse et al. (2014, VisCognition). A theoretical analysis of the perceptual span based on SWIFT simulations of the n+2 boundary paradigm

Risse et al. (2014, VisCognition). A theoretical analysis of the perceptual span based on SWIFT simulations of the n+2 boundary paradigm

E-mail

Risse, S., Hohenstein, S., Kliegl, R., & Engbert, R. (2014). A theoretical analysis of the perceptual span based on SWIFT simulations of the n+2 boundary paradigm. Visual Cognition.

Abstract. Eye-movement experiments suggest that the perceptual span during reading is larger than the fixated word, asymmetric around the fixation position, and shrinks in size contingent on the foveal processing load. We used the SWIFT model of eye-movement control during reading to test these hypotheses and their implications under the assumption of graded parallel processing of all words inside the perceptual span. Specifically, we simulated reading in the boundary paradigm and analyzed the effects of denying the model to have valid preview of a parafoveal word n+2 two words to the right of fixation. Optimizing the model parameters for the valid preview condition only, we obtained span parameters with remarkably realistic estimates conforming to the empirical findings on the size of the perceptual span. More importantly, the SWIFT model generated parafoveal processing up to word n+2 without fitting the model to such preview effects. Our results suggest that asymmetry and dynamic modulation are plausible properties of the perceptual span in a parallel word-processing model such as SWIFT. Moreover, they seem to guide the flexible distribution of processing resources during reading between foveal and parafoveal words.


To download, use right-click or CTRL-click and then "save as..."
Download this file (RHKE.VisCogn.2014.zip)RHKE.VisCogn.2014.zip[ ][2]11663 Kb09/03/2014 21:55
Download this file (Risse_etal.VisCogn.2014.pdf)Risse_etal.VisCogn.2014.pdf[ ][[1]]1374 Kb09/03/2014 21:46
Last Updated on Wednesday, 19 March 2014 19:43  

Copyright © 2017 Potsdam Mind Research Repository (PMR2). All Rights Reserved.
Joomla! is Free Software released under the GNU/GPL License.