Eyelink 1000 tracker

Manufactured by SR Research

Sourced in Canada

The EyeLink 1000 is a high-performance eye tracker that captures and records eye movements with exceptional accuracy and precision. It utilizes advanced optical technology to track the position and movement of the eyes, providing detailed data on gaze patterns and visual attention.

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Lab products found in correlation

Experiment builder software, by SR Research (1 mentions) Discovery mr750, by GE Healthcare (1 mentions) Matlab software, by MathWorks (1 mentions) Multiscan g520, by Sony (1 mentions)

Spelling variants of this product

EyeLink 1000 (664 citations) Eyelink 1000 eye tracker (134 citations) EyeLink 1000 Plus eye tracker (25 citations) EyeLink 1000 Desktop Mount eye tracker (14 citations) EyeLink 1000 Plus desktop mount eye tracker (8 citations) EyeLink 1000 eye tracker system (7 citations) EyeLink 1000 Plus Tower Mount eye tracker (3 citations) EyeLink 1000 video-based eye tracker (2 citations) EyeLink 1000 plus tracker (2 citations) EyeLink 1000 infrared video-based eye tracker (2 citations)

11 protocols using eyelink 1000 tracker

Binocular Eye Tracking for Reading Assessments

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The sentences were presented on a 21" CRT monitor, set at a refresh rate of 120 Hz with a 1024x768 resolution, interfaced with a PC at a viewing distance of 60 cm. An eye contingent boundary technique was used (Rayner, 1975) where the display changes occurred within 10 ms of the eye crossing the boundary. Sentences were presented in black, Courier New, size 12 font on a grey background; three characters subtended 1° of visual angle.
Although reading was binocular, eye movements were recorded only from the right eye, using an EyeLink 1000 tracker (S.R. Research Ltd.), with forehead and chin rests in order to minimize head movements. The spatial resolution of the eye tracker was 0.05º, and the sampling rate was 2000 Hz.
Word reading, pseudoword decoding and reading comprehension for each participant were assessed using the WIAT-II (Wechsler, 2005) .

Pagán A., Blythe H.I, & Liversedge S.P. (2016). Parafoveal preprocessing of word initial trigrams during reading in adults and children. Journal of experimental psychology. Learning, memory, and cognition, 42(3).

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Eye Tracking for Sentence Reading

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An SR Research Eyelink 1000 tracker was used to record participants' eye movements while they read the sentences. Viewing was binocular, but eye movements were recorded from the right eye only. The eye tracker was interfaced with a Dell Precision 390 computer, with all sentences presented on a 20 inch ViewSonic Professional Series P227f CRT monitor. The participants leaned on a headrest, which supported their chin and forehead during reading to reduce head movements. The text was displayed in black on a light grey background. The display was 81 cm away from the participants, and at this distance, on average, 3.2 characters equalled 1° of visual angle.
The CRT monitor was programmed to run at a refresh rate of 140 Hz, however due to an error not detected until the completion of data collection, the monitor was actually running at 60 Hz. This is a somewhat slow refresh rate for boundary paradigm experiments. We thus adopted a thorough data cleaning procedure (see

Hermena E.W., Liversedge S.P, & Drieghe D. (2016). Parafoveal processing of Arabic diacritical marks. Journal of experimental psychology. Human perception and performance, 42(12).

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Eye Tracking Analysis of Multiline Reading

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To answer these questions, we performed novel analyses of two existing multiline reading data sets. Each set contained information about the frequency, length, and cloze predictability of the words in each passage. Average word frequency and cloze norming information is shown in Fig. 1. All data were collected with an SR Research EyeLink 1000 tracker.Fig. 1

Correlation coefficients, scatterplots, and distributions for variables in the comprehension (top panel) and Provo Corpus (bottom panel)

Fig. 2

Fixed effects estimates from linear mixed-effects models for fixation duration prior to a forward return saccade or a forward skips of a previously fixated word for intraline and undersweep-fixations. 95% confidence intervals are presented around the mean

Slattery T.J, & Parker A.J. (2019). Return sweeps in reading: Processing implications of undersweep-fixations. Psychonomic Bulletin & Review, 26(6), 1948-1957.

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Eye Tracking Methodology for Saccades, Blinks, and Fixations

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Eye movements were recorded with an EyeLink 1000 tracker (SR Research Ltd., Ontario, Canada) at a sampling rate of 250 Hertz (Hz). Saccade, blink, and fixation data were recorded for each participant. Saccades were defined as any movement of at least 0.1 degree visual angle (°) that exceeded a velocity threshold of 30°/second (s) and an acceleration threshold of 8000°/s². Blinks were periods of activity with missing pupil data that exceeded 3 consecutive samples. Fixations consisted of all other recordings. Stimuli were displayed on a flat screen monitor (1024×768 pixel resolution, 75 Hz refresh rate) using a computer networked to a host computer running EyeLink 4.51 tracking software. The experiment was programmed using Experiment Builder software (SR Research Ltd.). Responses were collected with an RB-730 response pad (Cedrus, San Pedro, California).

Molitor R.J., Ko P.C., Hussey E.P, & Ally B.A. (2014). Memory-Related Eye Movements Challenge Behavioral Measures of Pattern Completion and Pattern Separation. Hippocampus, 24(6), 666-672.

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Multimodal Neuroimaging of Cognitive Processes

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We acquired MRI data at the Center for Cognitive Neurobiological Imaging at Stanford University on a 3T GE Discovery MR750 scanner (GE Medical Systems) using a 32-channel head coil. In each session we collected one T1-weighted structural scan with 0.9 mm isotropic voxel size. We acquired functional data with a T2* sensitive gradient echo EPI sequence with a multiplexing (multiband) factor of 3 to acquire whole-brain coverage (51 slices). The TR was 1.19 s, TE was 30 ms and flip angle was 62°. The voxel size was 2.4 mm isotropic.
Via a mirror mounted above their nose, participants viewed the stimuli on an LCD screen (total viewing distance = 280 cm). The display had a resolution of 1920 × 1080 pixels, refreshing at 60 Hz. We presented the stimuli with custom MATLAB software (MathWorks, Natick, MA, USA) and the Psychophysics Toolbox ^{66 (link),67 (link)}. Throughout each scan we recorded monocular gaze position with an SR Research Eyelink 1000 tracker. Calibration was usually successful (details below), and even when it was not, participants believed their fixation was being monitored. Participants responded to the tasks by pressing two buttons on a response pad held in their right hand.

Clemons K.V, & Stevens D.A. (2000). Efficacies of Sordarin Derivatives GM193663, GM211676, and GM237354 in a Murine Model of Systemic Coccidioidomycosis. Antimicrobial Agents and Chemotherapy, 44(7), 1874-1877.

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Binocular Sentence Reading Protocol

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The sentences were presented on a 21" CRT monitor, with a refresh rate of 100 Hz and a resolution of 1024x768, interfaced with a PC at a viewing distance of 60 cm. Sentences were presented in black, Courier New, size 12 font on a grey background; three characters subtended 1° of visual angle. Although reading was binocular, eye movements were recorded only from the right eye, using an EyeLink 1000 tracker (S.R. Research Ltd.), with forehead and chin rests in order to minimize head movements. The spatial resolution of the eyetracker was 0.05°, and the sampling rate was 2000 Hz.

Pagán A., Blythe H.I, & Liversedge S.P. (2021). The influence of children's reading ability on initial letter position encoding during a reading-like task. Journal of experimental psychology. Learning, memory, and cognition, 47(7).

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Eye Tracking During Sentence Reading

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An SR Research Eyelink 1000 tracker was used to record participants' eye movements while they read the sentences. Viewing was binocular, but eye movements were recorded from the right eye only. The eye tracker was interfaced with a Dell Precision 390 computer, with all sentences presented on a 20 inch ViewSonic Professional Series P227f CRT monitor. The participants leaned on a headrest, which supported their chin and forehead during reading to reduce head movements. The words were in black on a light grey background. The display was 70cm from the participants, and at this distance, an average of 3.8 characters equalled about 1° of visual angle.
Participants used a Microsoft gaming button box to enter their responses to comprehension questions and to terminate trials after reading the sentences.
When participants read screening materials aloud their voices were recorded using a standard digital voice recorder.

Hermena E.W., Drieghe D., Hellmuth S, & Liversedge S.P. (2015). Processing of Arabic diacritical marks: phonological-syntactic disambiguation of homographic verbs and visual crowding effects. Journal of experimental psychology. Human perception and performance, 41(2).

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Multimodal Perception Study with Eye-Tracking

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36 undergraduate students from the University of Pittsburgh who had not participated in the norming completed the experiment for course credit. Participants' eyes were tracked using an Eyelink 1000 tracker (SR Research Ltd., Toronto, Ontario, Canada) with a sampling rate of 1 ms. Participants viewed stimuli binocularly on a monitor approximately 63 cm from their eyes. Head movements were minimized using forehead and chin rests. The experiment began with instructions and a 13-point calibration. A single-point centrally-located drift correction was performed after every trial, as well as a full 13-point recalibration every 24 trials; this drift correction ensured that participants were fixating the center of the screen when the visual stimulus was initially displayed. On each trial, the visual stimulus preceded the audio stimulus by 1000 ms, giving participants time to extract event-related information from the scene. Audio stimuli were presented to participants via two speakers positioned at either side of the viewing monitor. The experiment lasted between 20 and 30 minutes.
We constructed two lists of stimuli for counterbalancing purposes. Each participant saw every visual stimulus, but heard only one of the two possible accompanying audio stimuli. Stimuli were presented to participants in random order.

Milburn E., Warren T, & Dickey M.W. (2015). World knowledge affects prediction as quickly as selectional restrictions: Evidence from the visual world paradigm. Language, cognition and neuroscience, 31(4), 536-548.

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Binocular Eye Movement Monitoring

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Participants’ heads were stabilized with a chin rest while their binocular eye movements were monitored at 500Hz via an SR Research Eye-Link 1000 tracker with a spatial resolution of 0.01°. Stimuli were presented and responses were collected using SR Research Experiment Builder software running on a Dell Optiplex 755 PC (2.66 GHz, 3.25 GB RAM) with a 20-inch NEC FE21111 CRT display (60Hz refresh; 1024x768 resolution).

Barnhart A.S., Costela F.M., Martinez-Conde S., Macknik S.L, & Goldinger S.D. (2019). Microsaccades reflect the dynamics of misdirected attention in magic. Journal of Eye Movement Research, 12(6), 10.16910/jemr.12.6.7.

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Eye Tracking in Controlled Setting

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Eye movements were recorded using an EyeLink 1000 tracker (SR Research, Mississauga, Ontario, Canada). Experimental materials were presented on a 21-in. CRT monitor (Sony Multiscan G520) with a 1,024 × 768 pixels resolution and a refresh rate of 150 Hz. The eye-tracking system was sampled at 1000 Hz. The participants placed their chins on a chin-rest and leaned their foreheads on a forehead rest to minimize head movements. Although viewing was binocular, eye movement data were collected only from the right eye. Participants were seated 58 cm from the video monitor.

Xu P., Qu Q., Shen W, & Li X. (2019). Co-activation of Taxonomic and Thematic Relations in Spoken Word Comprehension: Evidence From Eye Movements. Frontiers in Psychology, 10, 964.

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