Lévy-like diffusion in eye movements during spoken-language comprehension

Academic Article


  • This study explores the diffusive properties of human eye movements during a language comprehension task. In this task, adults are given auditory instructions to locate named objects on a computer screen. Although it has been convention to model visual search as standard Brownian diffusion, we find evidence that eye movements are hyperdiffusive. Specifically, we use comparisons of maximum-likelihood fit as well as standard deviation analysis and diffusion entropy analysis to show that visual search during language comprehension exhibits Lévy-like rather than Gaussian diffusion. © 2009 The American Physical Society.
  • Authors

    Published In

  • Physical Review E  Journal
  • Digital Object Identifier (doi)

    Author List

  • Stephen DG; Mirman D; Magnuson JS; Dixon JA
  • Volume

  • 79
  • Issue

  • 5