![]() ![]() Use the ILS Labs data server to safely store your data, and to access your data on other computers. The eye-tracking lab The SMI laptop is primarily meant for running experiments you are expected to do some of your experiment preparation, and all of your data analysis, on other computers, outside the eye-tracking lab (for instance in our practicum room K.06, or at home). Do this well before you are ready to start running your experiment! Accessing scripts and data on other computers Working with the equipment does require some instruction and practice please read the information in Step 4, and contact Iris Mulders for a tutorial. Step 4 outlines how to perform camera setup and calibration. We also have a small flat external USB-screen that you can use to monitor the participant’s gaze during the experiment. The SMI setup consists of a laptop (running Windows 8), and the eyetracker itself, which is connected to the laptop through USB. The EyeLink Host PC and the Stimulus PC communicate over a (crossover, orange red ) ethernet cable using SR Research software. The Stimulus PC is a dual boot machine, offering a choice between Linux (default) and Windows 7. You can access the ILS Labs data server from the Stimulus PC. The Stimulus PC is equipped with two monitors, one in the operator room and one in the participant booth. Stimulus PC (in SR Research terminology: Display PC): controls the presentation of stimuli and the acquisition of subject responses.During an experiment, the EyeLink Host PC is controlled by the experiment program ZEP. The eye-tracking software on the EyeLink Host PC runs under DOS, and is rarely operated directly by the experimenter. Gaze positions are corrected for (small) head movements through the use of a target sticker on the participant’s forehead freedom of movement is 22x18x20 cm (horizontal x vertical x depth). It contains routines to calibrate a subject and to calculate, visualize, and store on-line gaze positions. ![]() The EyeLink Host PC was configured by the manufacturer, SR Research, and runs the software that controls eye tracking and data sampling. EyeLink Host PC (in SR Research terminology: Host PC): controls the eye-tracking system and data sampling.The SR Research EyeLink 1000 System consists of a high-speed camera with an infrared illuminator, and two computers: For a full technical specification of the SMI RED250mobile, see their product flyer. Freedom of movement is 32 x 21 cm at a 60 cm distance gaze position accuracy is 0.4 degrees. In remote mode, the EyeLink 1000 system samples one eye at 500 Hz The SMI RED250mobile eye tracker samples both eyes at 250Hz, using infrared video based tracking technology. Always report any problems to lab support immediately: go to room 0.09 on the first floor, or alert the support staff by email or phone.For details on lab opening hours, see this page.Always arrange precise pick-up times for the SMI with the lab technicians.In busy times, we will coordinate reservations in the eye-tracking lab user meetings. Please unreserve the timeslot if an appointment is canceled. Don’t block whole weeks, only reserve the timeslots that you will actually be in the lab. You can reserve the experimental booth cabin 5 the baby eye-tracking lab K.09 the SMI eyetracker and the experimental booth cabin 6 in the reservation system.In the time period that you are working on your experiment, attend the eye-tracking lab user meetings.Contact Iris Mulders to discuss your experiment design, and for a tutorial on how to use the equipment.Read the Introduction Guide to ILS Labs and follow all the steps there to create the user accounts etc that you will need.Before you start Support and opening hours Clean up and code your data with Fixation (in K.06, or on your own PC). Test your experiment in K.12 in K.09 on the SMI laptop. Create stimuli and implement your experiment. Before you start, you’ll need to learn about how we work in the lab, and about the equipment. Recipe for a reading Visual World Paradigm (VWP) experiment If you find mistakes or have things to add, please send them to Iris Mulders. Technical details about this set-up can be found here on the facilities page. This page aims to give you a step-by-step guide to running your own reading Visual World Paradigm (VWP) experiment under Linux under Windows with the EyeLink 1000 in room K.12, booth 5. If you have suggestions on how to improve this document, or find mistakes, please send them to Introduction Last updated on 28 July 2023 by Iris Mulders ![]()
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