title: Eye movement patterns during the recognition of three-dimensional objects: preferential fixation of concave surface curvature minima.
abstract: This study used eye movement patterns to examine how high-level shape information is used during 3D object recognition. Eye movements were recorded while observers either actively memorized or passively viewed sets of novel objects, and then during a subsequent recognition memory task. Fixation data were contrasted against different algorithmically generated models of shape analysis based on: (1) regions of internal concave or (2) convex surface curvature discontinuity or (3) external bounding contour. The results showed a preference for fixation at regions of internal local features during both active memorization and passive viewing but also for regions of concave surface curvature during the recognition task. These findings provide new evidence supporting the special functional status of local concave discontinuities in recognition and show how studies of eye movement patterns can elucidate shape information processing in human vision.
authors.affiliation: Wales Institute for Cognitive Neuroscience, School of Psychology, Bangor University, Bangor, UK. e.c.leek@bangor.ac.uk
authors.forename: E Charles
authors.initials: EC
authors.lastname: Leek
authors.forename: Filipe
authors.initials: F
authors.lastname: Cristino
authors.forename: Lina I
authors.initials: LI
authors.lastname: Conlan
authors.forename: Candy
authors.initials: C
authors.lastname: Patterson
authors.forename: Elly
authors.initials: E
authors.lastname: Rodriguez
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Johnston
mesh_terms: D005133:Eye Movements / Q000502:physiology*; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D009949:Orientation / Q000502:physiology*; D011601:Psychophysics / Q000379:methods*; D021641:Recognition, Psychology / Q000502:physiology*; D055815:Young Adult