Programming of saccades to double-step targets in scene viewing: A test of assumptions present in the CRISP model.

Antje Nuthmann, R Calen Walshe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Several computational models explaining fixation durations in scene viewing (Nuthmann, Smith, Engbert, & Henderson, 2010) and in reading (Engbert, Nuthmann, Richter, & Kliegl, 2005; Reichle, Pollatsek, Fisher, & Rayner, 1998) assume that saccade programming is completed in two stages: an initial, labile stage that is subject to cancellation and an subsequent, non-labile stage in which the program can no longer be cancelled. This distinction is motivated by findings from double-step experiments that used much simpler situations than scene viewing or reading. Here, we adopt a classic double-step paradigm to a scene-viewing context. In a Static condition targets are presented to the left or right of a central fixation cross along a horizontal axis while in a Scene condition targets are presented in a gaze contingent manner along a trajectory defined by the location of recent fixations. We found evidence in support of the claims that saccade cancellation occurs within a naturalistic scene-viewing context and that saccade cancellation can account for increases in observed fixation duration distributions. The duration of the non-labile stage was estimated to be longer in the Scene condition compared to the Static condition.
Original languageEnglish
Title of host publicationProceedings of the 35th Annual Meeting of the Cognitive Science Society
EditorsMarkus Knauff, Michael Pauen, Natalie Sebanz, Ipke Wachsmuth
PublisherAustin TX: Cognitive Science Society
Pages1569-1574
Number of pages6
ISBN (Electronic)978-0-9768318-9-1
Publication statusPublished - Aug 2013
Event35th Annual Meeting of the Cognitive Science Society - Berlin, Germany
Duration: 31 Jul 20133 Aug 2013

Conference

Conference35th Annual Meeting of the Cognitive Science Society
CountryGermany
CityBerlin
Period31/07/133/08/13

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