The VAS task was run inside a dimly lit room and was controlled with Experiment Builder software (RS Research, version 1.10.1241). Children were seated in front of a computer screen (Graz: 120-Hz refresh rate, 1024 x 768 pixels; Munich: 120-Hz refresh rate, 1280 x 960 pixels) at a viewing distance of about 65 cm. To ensure that children looked at the central fixation cross, eye movements were monitored using an EyeLink 1000 tower mount eye tracker in Graz and an EyeLink 1000 Plus desktop mount eye tracker in Munich (SR Research, Toronto, Canada). Eye-movement data were not further analyzed.
Eyelink 1000 plus desktop mount eye tracker
Manufactured by SR Research
Sourced in Canada
The EyeLink 1000 Plus desktop mount eye tracker is a high-performance eye tracking system designed for research applications. It tracks the user's eye movements with high accuracy and sampling rates, providing researchers with detailed data on gaze patterns and eye behavior.
Automatically generated - may contain errors
8 protocols using eyelink 1000 plus desktop mount eye tracker
1
Visual Attention Span Task Protocol
2
Multimodal Sensory Stimulation Protocol
3
Psychophysics Experiment Setup Protocol
4
Visual Stimuli Presentation and Eye Tracking
5
Gaze-Contingent Stimulus Presentation
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Stimuli were presented on a 33.0 cm × 24.8 cm CRT monitor, with a refresh rate of 60 Hz and a resolution of 1152 × 864 pixels. The monitor was positioned 60 cm from the chinrest, providing a resolution of approximately 37 pixels per degree. A matte black circular aperture (radius = 10.9 degrees radius) was physically placed on the monitor to prevent potential effects from monitor edges/corners. The practice and experimental sessions described below were performed in a dark room. We used the Eyelink 1000 Plus Desktop Mount eyetracker (SR Research Ltd., Ontario, Canada) to enforce fixation throughout the stimulus period and to record gaze position throughout the experiment.
6
Eye-tracking Methodology for Visual Attention
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Eye-movements of the dominant eye were recorded with an EyeLink 1000 Tower Mount eye-tracker in Graz and an EyeLink 1000 Plus Desktop Mount eye-tracker in Munich (SR Research, Toronto, Canada). The experiment was controlled with Experiment Builder software (RS Research, version 1.10.1241). Children were seated in front of a 20-in. monitor (120-Hz refresh rate, 1024 × 768 resolution) in Graz and a 15.6-in. monitor (120-Hz refresh rate, 1280 × 960 resolution) in Munich at a viewing distance of 65 cm. Stimulus presentation was similar at both collaborating sites with an uppercase letter height of about 0.62° of visual angle. Children put their forehead up against a forehead rest to minimize head movements. A 9-point calibration cycle at the beginning and after each break was used to ensure a spatial resolution of less than 0.5° of visual angle.
7
Examining Fixation and Microsaccades
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To ensure that observers were centrally fixating and to analyze microsaccades, online eye tracking was used at a sampling rate of 1000 Hz. Eye movements were monitored using an EyeLink 1000 Plus Desktop Mount eyetracker (SR Research, Ontario, Canada). Each trial began once the observer fixated on the central cross for 300 ms. If observers broke fixation (more than 1.5° from center) between the precue and the response-cue the trial would end and be added to the end of the block. Observers were allowed to move their eyes, blink, to rest their eyes between trials as needed.
8
Experimental Cueing Paradigm in Children
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The experimental cueing paradigm was run inside a dimly lit room and was controlled with Experiment Builder software (RS Research, version 1.10.1241). Children were seated in front of a computer screen (Graz: 120-Hz refresh rate, 1024 x 768 pixels; Munich: 120-Hz refresh rate, 1280 x 960 pixels) at a viewing distance of about 65 cm. To ensure that children looked at the central fixation cross, eye movements were monitored using an EyeLink 1000 tower mount eye tracker in Graz and an EyeLink 1000 Plus desktop mount eye tracker in Munich (SR Research, Toronto, Canada). Eye-movement data were not further analyzed. Note that, since monitor sizes differed between the two labs, the dimensions of stimuli were changed in order to keep constant the visual angle subtended by the stimuli and their relative distance.
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