TY - JOUR A1 - Risse, Sarah A1 - Krügel, Andre A1 - Backhaus, Daniel T1 - Open Education in Methods Training T1 - Open Education in der Methodenausbildung BT - Vorstellung eines digitalen Lehrkonzepts für computergestütztes wissenschaftliches Arbeiten BT - Presentation of a digital Teaching Concept for computer-supported scientific Work JF - Psychologische Rundschau : offizielles Organ der Deutschen Gesellschaft für Psychologie Y1 - 2022 U6 - https://doi.org/10.1026/0033-3042/a000602 SN - 0033-3042 SN - 2190-6238 VL - 73 IS - 3 SP - 206 EP - 208 PB - HOGREFE VERLAG CY - Göttingen ER - TY - GEN A1 - Backhaus, Daniel A1 - Engbert, Ralf A1 - Rothkegel, Lars Oliver Martin A1 - Trukenbrod, Hans Arne T1 - Task-dependence in scene perception: Head unrestrained viewing using mobile eye-tracking T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - Real-world scene perception is typically studied in the laboratory using static picture viewing with restrained head position. Consequently, the transfer of results obtained in this paradigm to real-word scenarios has been questioned. The advancement of mobile eye-trackers and the progress in image processing, however, permit a more natural experimental setup that, at the same time, maintains the high experimental control from the standard laboratory setting. We investigated eye movements while participants were standing in front of a projector screen and explored images under four specific task instructions. Eye movements were recorded with a mobile eye-tracking device and raw gaze data were transformed from head-centered into image-centered coordinates. We observed differences between tasks in temporal and spatial eye-movement parameters and found that the bias to fixate images near the center differed between tasks. Our results demonstrate that current mobile eye-tracking technology and a highly controlled design support the study of fine-scaled task dependencies in an experimental setting that permits more natural viewing behavior than the static picture viewing paradigm. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 871 KW - scene viewing KW - real-world scenarios KW - mobile eye-tracking KW - task influence KW - central fixation bias Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-519124 SN - 1866-8364 IS - 5 ER - TY - JOUR A1 - Backhaus, Daniel A1 - Engbert, Ralf A1 - Rothkegel, Lars Oliver Martin A1 - Trukenbrod, Hans Arne T1 - Task-dependence in scene perception: Head unrestrained viewing using mobile eye-tracking JF - Journal of vision N2 - Real-world scene perception is typically studied in the laboratory using static picture viewing with restrained head position. Consequently, the transfer of results obtained in this paradigm to real-word scenarios has been questioned. The advancement of mobile eye-trackers and the progress in image processing, however, permit a more natural experimental setup that, at the same time, maintains the high experimental control from the standard laboratory setting. We investigated eye movements while participants were standing in front of a projector screen and explored images under four specific task instructions. Eye movements were recorded with a mobile eye-tracking device and raw gaze data were transformed from head-centered into image-centered coordinates. We observed differences between tasks in temporal and spatial eye-movement parameters and found that the bias to fixate images near the center differed between tasks. Our results demonstrate that current mobile eye-tracking technology and a highly controlled design support the study of fine-scaled task dependencies in an experimental setting that permits more natural viewing behavior than the static picture viewing paradigm. KW - scene viewing KW - real-world scenarios KW - mobile eye-tracking KW - task KW - influence KW - central fixation bias Y1 - 2020 U6 - https://doi.org/10.1167/jov.20.5.3 SN - 1534-7362 VL - 20 IS - 5 SP - 1 EP - 21 PB - Association for Research in Vision and Opthalmology CY - Rockville ER - TY - JOUR A1 - Schwetlick, Lisa A1 - Backhaus, Daniel A1 - Engbert, Ralf T1 - A dynamical scan-path model for task-dependence during scene viewing JF - Psychological review N2 - In real-world scene perception, human observers generate sequences of fixations to move image patches into the high-acuity center of the visual field. Models of visual attention developed over the last 25 years aim to predict two-dimensional probabilities of gaze positions for a given image via saliency maps. Recently, progress has been made on models for the generation of scan paths under the constraints of saliency as well as attentional and oculomotor restrictions. Experimental research demonstrated that task constraints can have a strong impact on viewing behavior. Here, we propose a scan-path model for both fixation positions and fixation durations, which include influences of task instructions and interindividual differences. Based on an eye-movement experiment with four different task conditions, we estimated model parameters for each individual observer and task condition using a fully Bayesian dynamical modeling framework using a joint spatial-temporal likelihood approach with sequential estimation. Resulting parameter values demonstrate that model properties such as the attentional span are adjusted to task requirements. Posterior predictive checks indicate that our dynamical model can reproduce task differences in scan-path statistics across individual observers. KW - scene viewing KW - eye movements KW - task dependence KW - individual differences; KW - Bayesian inference Y1 - 2023 U6 - https://doi.org/10.1037/rev0000379 SN - 0033-295X SN - 1939-1471 VL - 130 IS - 3 SP - 807 EP - 840 PB - American Psychological Association CY - Washington ER -