title: Graded recognition as a function of the number of target fixations.
abstract: Target recognition stages were studied by exposing observers to varying controlled numbers of target fixations. The target, present in half the displays, consisted of two identical cards (Identity Search Task; Jacob & Hochstein, 2009). Following more fixations, targets are better recognized, indicated by increased Hit-rate and detectability (according to Unequal Variance Signal Detection Theory), decreased Response Time and growing confidence, reflecting current stage in recognition process. Thus, gathering information over a specific scene region results from a growing number of fixations on that particular region. We conclude that several fixations on a scene location are necessary for achieving recognition.
authors.affiliation: Interdisciplinary Center for Neural Computation and Department of Neurobiology, Institute of Life Sciences, The Hebrew University, Jerusalem, Israel. michal.jacob@mail.huji.ac.il
authors.forename: Michal
authors.initials: M
authors.lastname: Jacob
authors.forename: Shaul
authors.initials: S
authors.lastname: Hochstein
mesh_terms: D053483:Eye Movement Measurements; D005403:Fixation, Ocular / Q000502:physiology*; D006801:Humans; D011930:Reaction Time; D021641:Recognition, Psychology / Q000502:physiology*