Compatibility of a Competition Model for Explaining Eye Fixation Durations During Free Viewing.

ABSTRACT: Inter-saccadic times or eye fixation durations (EFDs) are relatively stable at around 250 ms, equivalent to four saccades per second. However, the mean and standard deviation are not sufficient to describe the frequency histogram distribution of EFD. The exGaussian has been proposed for fitting the EFD histograms. The present report tries to adjust a competition model (C model) between the saccadic and the fixation network to the EFD histograms. This model is at a rather conceptual level (computational level in Marr's classification). Both models were adjusted to EFD from an open database with data of 179,473 eye fixations. The C model showed to be able, along with exGaussian model, to be compatible with explaining the EFD distributions. The two parameters of the C model can be ascribed to

SUBMITTER: Gomez CM 

PROVIDER: S-EPMC12563974 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature