Experiments were presented on a VIEWPixx monitor (VPixx Technologies Inc., Saint-Bruno, Quebec, Canada) using MATLAB (The Mathworks, Natick, MA, USA) and the Psychtoolbox [29 (link)]. The monitor had a spatial resolution of 1920 × 1080 pixel, a size of 51.5 × 29 cm and was viewed from a distance of 60 cm. Eye movements of the right eye were recorded using a desktop mounted EyeLink 1000 (SR Research Ltd., Ontario, Canada) with a sampling rate of 1000 Hz and the Eyelink Toolbox [30 ].
Viewpixx monitor
Manufactured by VPixx Technologies
Sourced in Canada
The VIEWPixx monitor is a high-performance research-grade display designed for visual perception and psychophysics experiments. It features a fast refresh rate, high resolution, and precise color calibration, making it suitable for a wide range of laboratory applications.
Automatically generated - may contain errors
Lab products found in correlation
Matlab, by MathWorks (9 mentions)
Eyelink 1000, by SR Research (7 mentions)
64 ag agcl electrodes, by BioSemi (2 mentions)
Eyelink 1000 plus eye, by SR Research (1 mentions)
Psychtoolbox, by MathWorks (1 mentions)
Eyelink toolbox, by SR Research (1 mentions)
Matlab v2020a, by MathWorks (1 mentions)
Eyelink toolbox, by MathWorks (1 mentions)
Eyelink 1000 plus, by SR Research (1 mentions)
Matlab r2016a, by MathWorks (1 mentions)
14 protocols using viewpixx monitor
1
Eye Tracking Experiments on VIEWPixx Monitor
2
Macaque Image Selection Behavior
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Photographs were shown to the macaque monkeys using MonkeyLogic2 software (58 (link)) on a VIEWPixx monitor (VPixx Technologies Inc.) at a pixel resolution of 1,920 × 1,200 at 120 Hz. Eye position data were collected using an infrared camera and interfaced with MonkeyLogic2 software. The monkey was required to fixate on a point for 100 to 300 ms, then two images appeared at (±3,0)°. If the monkey kept fixation for an additional 200 ms, a small liquid reward was delivered, and the fixation point disappeared. Finally, the monkey chose an image with a saccade, and a large reward (2 to 3× larger than the fixation reward) was dispensed if the target image was chosen. If the distractor was chosen, a black or red screen appeared for 1 s. Training performance was calculated as the percentage of target choices made during these decision trials, omitting trials in which a choice was not made (e.g., fixation was not initiated or maintained). Once performance reached a minimum of 75%, probe trials were randomly introduced as 15% of trials. In probe trials, the animal chose an image with a saccade and, regardless of the choice, there was a 50% chance a reward would be dispensed.
3
Eye-tracking Study of Marburg University Students
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In total, 47 students from Marburg University aged 19–29 years (M = 23 years) participated in this study (30 female, 17 male). All of them had normal or corrected to normal vision and gave prior informed consent. Participants were paid for participation (8€/h) and received additional reward based on their performance. All experiments were conducted in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and were approved by the local ethics committee LEK FB06 at Giessen university (proposal number 2013–0020). We recorded 25 participants for Experiment 1, 8 participants for Experiment 2, 3 and 5, 12 participants for Experiment 4 and 2 for Experiment 6. Experiments were conducted using the Psychtoolbox48 (link) in MATLAB (The Mathworks, Natick, MA, USA) and presented on a VIEWPixx monitor (VPixx Technologies Inc., Saint-Bruno, Quebec, Canada) at a viewing distance of 60 cm. The monitor had a spatial resolution of 1920 × 1080 pixel and a size of 51.5 × 29 cm. We recorded eye movements of the right eye using a desktop mounted EyeLink 1000 (SR Research Ltd., Ontario, Canada) with a sampling rate of 1000 Hz and the Eyelink Toolbox49 (link).
4
Visual Perception Experiment with Eye-Tracking
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Stimuli were shown on a ViewPixx monitor (VPixx Technologies Inc., Canada) with a resolution of 1, 920 × 1, 200 pixels and a refresh rate of 120 Hz viewed at a distance of 65 cm. The monitor covered a visual angle of 41° horizontally and 24° vertically. Gaze of the subjects was controlled by an EyeLink 1000 Plus eye tracker (SR Research, Canada) at a sampling rate of 1 kHz. Viewing distance and head position was fixed by using a chin and forehead rest. The up and down keys on a keyboard were used by the subjects to respond in the test phase. The experiment was run with the Psychophysics Toolbox (Brainard, 1997 (link)) in Matlab (Mathworks, USA). Viewing was monocular.
5
Visual Perception Experiment Setup
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Stimuli were displayed on a 23.6-inch VIEWPixx monitor (VPixx Technologies Inc., Saint-Bruno, QC, Canada) driven by a AMD FirePro V4900 graphics board with a refresh rate of 120 Hz. At a viewing distance of 48.5 cm, the active screen area subtended 61° horizontally and 34° vertically. With a spatial resolution of 1920 × 1080 pixels, this results in 32 pixels/°. The luminance of white, gray, and black pixels was 228, 30, and 0.6 cd/m2, respectively. Stimulus presentation was controlled by Matlab (MathWorks, Natick, MA, USA) using the Psychophysics toolbox (Brainard, 1997 (link); Pelli, 1997 (link)). The experiments took place in a dark room and the observer’s head was stabilized by a forehead and chin rest.
6
Eye Tracking in Stereoscopic Experiments
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Experiments were conducted using the Psychtoolbox (Brainard, 1997 (link); Pelli, 1997 (link)) in MATLAB (The MathWorks, Natick, MA) and presented on a VIEWPixx monitor (VPixx Technologies Inc., Saint-Bruno, Quebec, Canada) at a viewing distance of 68.5 cm. The monitor had a spatial resolution of 1920 × 1080 pixels and a size of 51.5 × 29 cm. We recorded eye movements of both eyes using a desktop mounted EyeLink 1000 (SR Research Ltd., Ontario, Canada) with a sampling rate of 1000 Hz and the Eyelink Toolbox (Cornelissen, Peters, & Palmer, 2002 (link)). A mirror stereoscope (Wheatstone, 1838 (link)) consisting of four first surface mirrors with a diameter of 50.8 mm (Thorlabs Inc. Newton, NJ) was used to bring the views of the two eyes into alignment. The eye tracker was recording the eyes directly beneath the mirrors of the stereoscope.
7
EEG Recording in Shielded Room
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The experiment was conducted in a dark, acoustically and electromagnetically shielded room. The stimuli were presented on a 24-inch ViewPixx monitor (VPixx technologies, Inc., Montreal) with 1920 × 1080 resolution and a refresh rate of 144 Hz. Viewing distance was maintained at 45 cm using a chinrest, meaning the screen subtended 61.18° × 36.87° (each pixel 2.4’ × 2.4’). Stimuli were generated in MATLAB v2020a (The MathWorks, Inc., Matick, MA) using Psychophysics Toolbox40 (link),41 v3.0.18.13 (see http://psychtoolbox.org/ ). EEG signals were recorded using 64 Ag-AgCl electrodes (BioSemi, Amsterdam, Netherlands).
8
Binocular Viewing of Calibrated Visual Stimuli
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Stimuli were presented on a VIEWPixx monitor (VPixx Technologies Inc., Canada) running in M16 mode (16-bit input resolution, 10–12 bit internal resolution) in a darkened room. The display had a spatial and temporal resolution of 1920 × 1080 and 120 Hz, respectively, and was calibrated to ensure a linear gamma correction. The luminance of white, grey, and black pixels was 105.70, 58.33, and 0.21 cd/m2, respectively. Observers viewed the stimulus display binocularly at a viewing distance of 60 cm with their heads stabilised by a chin and forehead rest.
Eye movements (single eye) were recorded with a sampling rate of 1000 Hz with an Eyelink 1000 (SR Research Ltd., Ontario, Canada). Experimental software was written in MATLAB (MathWorks, Natick, MA) using the Psychophysics Toolbox (Kleiner et al., 2007 ) and the Eyelink toolbox (Cornelissen, Peters, & Palmer, 2002 (link)). Observers’ responses were given by key press on a standard keyboard.
Eye movements (single eye) were recorded with a sampling rate of 1000 Hz with an Eyelink 1000 (SR Research Ltd., Ontario, Canada). Experimental software was written in MATLAB (MathWorks, Natick, MA) using the Psychophysics Toolbox (Kleiner et al., 2007 ) and the Eyelink toolbox (Cornelissen, Peters, & Palmer, 2002 (link)). Observers’ responses were given by key press on a standard keyboard.
9
Eye Tracking of Visual Stimuli
10
Eye-Tracking Experiment with Psychtoolbox
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Experiments were programmed in Matlab (The MathWorks Inc., Natick, MA, USA) using the Psychtoolbox and Eyelink toolbox extensions (Cornelissen, Peters, & Palmer, 2002; (link)Kleiner, Brainard, & Pelli, 2007) . Stimuli were displayed on a VIEWPixx monitor (VPixx Technologies Inc. Saint-Bruno, QC, CA), with a resolution of 1,920 x 1,200 pixels, running at 100 Hz. Fixation was monitored using an EyeLink1000 desk-mounted eye tracker (SR Research Ltd., Ottawa, ON, Canada) at a sampling rate of 1,000 Hz. Participants' heads were stabilized by a chin and forehead rest at approximately 55 cm from the screen. They were tested in a room with dimmed overhead lighting. All statistics were conducted using JASP (2018). For the Bayes factors, we always compared the H0 against a two-sided alternative hypothesis, using the independent, multinomial sampling option (Jamil et al., 2017) (link) with a default prior concentration of 1. Either the Bayes factor favoring H0 (BF 01 ) or favoring H1 (BF 10 ) is reported, depending on which of the two was larger than 1 (note that BF 10 = 1/BF 01 ).
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